Dan Brown's New Novel: Inferno!

The title of Dan Brown's new book has been revealed after a 'puzzle' was completed by fans just hours after being posted to social media. Brown's code-solving historical investigator Robert Langdon will return in the new novel, Inferno, set to be released on May 14.

The title – Inferno – was revealed soon after the announcement by readers, who had been invited to use social media posts to help expose a digital mosaic. By posting on Facebook, or tweeting using the hashtag #DanBrownToday, readers' profile images were added as tiles in a web graphic, with the title – alluding to Dante's 14th-century poem – becoming clear as more images were added.

"Although I studied Dante's Inferno as a student, it wasn't until recently, while researching in Florence, that I came to appreciate the enduring influence of Dante's work on the modern world," Brown said.

"With this new novel, I am excited to take readers on a journey deep into this mysterious realm … a landscape of codes, symbols, and more than a few secret passageways."

"Dan Brown's enthusiasm for puzzles, codes and symbols is a passion shared by his readers," said Suzanne Herz at Brown's US publisher Doubleday, saying that the marketing stunt was intended "to harness that passion and use it as a catalyst to reveal the new title."

Source / DanBrown.com


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Anonymous wrote 4 years 9 weeks ago


Have you looked into the secrets section on the new Dan Brown website? I've decoded a few of the ciphers, but it seems there is more to be found; especially, the meaning of "TARTY SECT". You have been helpful in uncovering some of these clues on the Lost Symbol cover; any thoughts on this?

Anonymous wrote 4 years 8 weeks ago


Could you say me some of the secrets? i only found out that you can type "fibonacci" in the field at the bottom.

When i try to solve the magic square using Melancholia I i get:
Isiaah 80:4?

Anonymous wrote 4 years 8 weeks ago

RE: Secret

Its not a magic square like Durer, its a ceasar box!

RalphK wrote 4 years 8 weeks ago

Solution to the Caesar box code

The answer is MS408 Yale Library. This is the call number in the Yale Rare Books Library for the Voynich Manuscript. This should be lots of fun!

Greg wrote 4 years 8 weeks ago

Easy Codes, Tough Codes

Fibonnaci and Voynich Manuscript were fairly easy. Well and truly stuck on "Symbols are very adept" and "Tarty Sect". Thought "Ordo ab Chao" would be a cinch, but the translated phrase doesn't result in success.

In fact, starting to wonder if they are all ciphers, or if some are just placeholders? Bit hard to tell by the way the code entry section is designed if progress is being made towards an endpoint, or if there's just a few ciphers to crack for the fun of it.

(p.s. Due to a massive influx of spam, I had to close anonymous commenting as an option here on The Cryptex - so if anybody wants to join the discussion, you'll have to register...sorry)

RalphK wrote 4 years 8 weeks ago

The publication date

It's the first five digits of pi backwards.

RalphK wrote 4 years 8 weeks ago

Second clip


wilfredkrenn wrote 4 years 8 weeks ago

More Secrets

Nice catch on the publication date, I'm interested to see how that factors in. I just got done re-reading the Lost Symbol and many of the phrases "ordo ab chao", "symbols can be very adept", "job 38:11" come from previous books, so not sure if they are coded. However, I had thought that about the fibbonacci sequence as well and that turned out to be a keyword. One thing I noticed is that the phrase "symbol...at hiding the truth" is used twice; however, it phrased differently in each occurance "symbols can be" vs "symbols are".

Greg wrote 4 years 8 weeks ago

Nice work guys

Ralph - whoa, nice pick up on the publication date! And how did you figure out the Pythagoras keyword? I'm guessing that's the "tarty sect" with a Pythagorean triangle beside it (tart = pie), though strictly you'd think the answer should be "Pythagoreans", not "Pythagoras". Interesting also that cipher's video isn't like the other two, which are more instructional about the code word entered.

Wilfred - hah, good eyes there! I was wondering why I kept entering the phrase into search engines varying between "are" and "can be" - was cranky at myself for not being precise. Guess my subconscious picked up what my conscious mind missed!

By the way, the phrase in The Lost Symbol actually mentions "language", not "symbols":

“I mention the horned Moses,” Bellamy now said, “to illustrate how a single word, misunderstood, can
rewrite history.”

You’re preaching to the choir, Langdon thought, having learned the lesson firsthand in Paris a number of years back. SanGreal: Holy Grail. SangReal: Royal Blood.

“In the case of the Masonic Pyramid,” Bellamy continued, “people heard whispers about a ‘legend.’ And the idea stuck. The Legend of the Masonic Pyramid sounded like a myth. But the word legend was referring to something else. It had been misconstrued. Much like the word talisman.” He smiled. “Language can be very
adept at hiding the truth

“That’s true, but you’re losing me here.”

“Robert, the Masonic Pyramid is a map. And like every map, it has a legend—a key that tells you how to read it.” Bellamy took the cube-shaped package and held it up. “Don’t you see? This capstone is the legend to the pyramid. It is the key that tells you how to read the most powerful artifact on earth . . . a map that
unveils the hiding place of mankind’s greatest treasure—the lost wisdom of the ages.”

wilfredkrenn wrote 4 years 8 weeks ago

Magic Circles

So, here is something that I've been thinking about for a while, but haven't quite come to a conclusion on. Brown has featured Magic Squares prominently in his books and puzzles. While looking into this I found the existence of Magic Circles (see reference below). Considering the next novel is based on Dante's Inferno and I would expect the" 7 circles of hell"; I wonder if these Magic Circles might factor in. On the website circles are prominently featured, e.g. the DB insignia and the design around the keyword entry. I wonder if this sparks anything for you out there.


wilfredkrenn wrote 4 years 8 weeks ago

Magic Circles (cont.)

CORRECTION: Actually it is 9 circles.

RalphK wrote 4 years 8 weeks ago


Fibonacci was flagged by the Golden Spiral and the Fibonacci series. The right triangle explicitly demonstrates the Pythagorean Theorem. For consistency it made sense to me to just type in the name of the corresponding mathematician. I tried typing in a number of other famous mathematicians but got nowhere.

Tarty doesn't ring any bells for me but sect sounds like part of a mathematical term, like intersection. Most of the other scattered symbols (e.g. the Arago Medallion) look like allusions to the prior books, as has already been noted.

I really like the circles idea. Both pi and the Pythagorean Theorem tie into the geometry of circles...

RalphK wrote 4 years 8 weeks ago

More on Fibonacci

You can also get to the Fibonacci clip by typing in the list of numbers provided on the page. The narrator (I hope it isn't Dan Brown) is incorrect about the Golden Ratio being the quotient of every element in the sequence and the element that precedes it. In fact, it is the limit of this quotient as the elements become infinitely large.

Greg wrote 4 years 8 weeks ago

The Pythagoras Clip

Probably not a necessary piece of information, but FYI: the video shown in response to the Pythagoras answer, with Dan coming out of a 'secret door', is (I'm pretty sure) taken in the museum of Palazzo Vecchio. More specifically, in the Studiolo of Francesco I de Medici, "a very sophisticated treasure chest “of rare and precious things”, with a secret entrance to the Tesoretto ("little treasure") of his father Cosimo I.

You can watch a virtual walkthrough of these rooms here:

The history of the Medici's obviously holds plenty of possible content for a Dan Brown novel, given their importance to the Renaissance and involvement with collecting historical texts, including those on Hermeticism.

tbeyer wrote 4 years 7 weeks ago

The photos

I have begun to save and start to identify the photos posted to Dan Brown's Facebook page. Any and all help will be appreciated and acknowledged. http://keystoinferno.wetpaint.com/page/Photos+Galore

Greg wrote 4 years 7 weeks ago


* The symbol is Dan Brown's personal logo - it has a D and a B hidden within it.

* The coat of arms is more correctly that of Toledo. It's the shield of Castille-Leon, but the addition of the double-headed eagle points to Toledo.

* The building Dan Brown is entering is the Palazzo Vecchio. Almost certain to be in the book IMO, for various reasons.

Sophie wrote 4 years 7 weeks ago

tarty sect

taking the word tarty to refer to a pie and the word sect to refer to a section , you might think of a slice of a pie. type in the word slice. this opens some new box, but this new box is in the dark and i am unable to do anything with this. at times i can see an arrow in white in the center , i click on this , but this does not do anything; the word slice definately opened something .can someone help using this hint?

Greg wrote 4 years 7 weeks ago

Poor code

This just seems to be poor code (of the computer program type, not the hiding secrets type). I threw in a few other array-manipulation statements like push, pop and so on and they all resulted the same. Not the most professional job, wonder if it opens them up to an injection attack?

UDbmas wrote 4 years 5 weeks ago

website symbols

Whether or not it's important I don't know, but the symbols are alchemical ones. Perhaps their placement as the website scrolls is a clue? Here's the pic of the symbols:

UDbmas wrote 4 years 5 weeks ago

image at the bottom

The drawing at the bottom of the webpage, where we enter clues to get the videos, is Matatron's Cube. I think Metatron is one of the archangels.

UDbmas wrote 4 years 5 weeks ago

More on photos

The illustration is "Dante and Charon" by Priamo della Quercia.
Information on the medieval artwork can be found here:


Dante Alighieri
Divina Commedia
Origin Italy, N. (Tuscany, Siena?)
Date between 1444 and c. 1450

UDbmas wrote 4 years 5 weeks ago


TARTY SECT = TETRACTYS (a triangle of 10 points arranged equidistantly) the concept is attributed to Pythagoras.

Greg wrote 4 years 5 weeks ago


UDbmas wrote:
TARTY SECT = TETRACTYS (a triangle of 10 points arranged equidistantly) the concept is attributed to Pythagoras.

Outstanding work (and nice to see you again)! Interesting that 'tetractys' gives the same video response as 'pythagoras' as well - a great play on words that also works as an anagram.

UDbmas wrote 4 years 5 weeks ago

Caina & Antenora

The etching is Cocytus, the lowest circle of hell.

Greg wrote 4 years 5 weeks ago

The cover codes

Not sure if you guys have had a look at the cover of Inferno yet - but there appears to be a code within the 9 circles. Opposite the Roman numerals 1 through IX are nine letters, which I make out as 'catroaccr'. Given that both the numbers and letters each trace out a spiral around the circle, the previous Fibonacci clue on DanBrown.com, and the 'acc' sequence towards the end of the nine letter group, my first reaction was to think it was a code for 'Fibonacci'. But not sure what cipher system would be used that would have those 3 letters not encoded, but the others 'shifted' by varying amounts.

UDbmas wrote 4 years 5 weeks ago


Looking at the word "SEI" -- the letters are somewhat oddly formed. In the "Seven Clues" facebook posts there is an image of the Dante cover portrait inverted. Inverting the SEI as drawn looks like 261. Does that ring any bells?

UDbmas wrote 4 years 5 weeks ago

Cover - 9 circles

What happens if each circle is rotated until the numerals align? Could there be a hidden image, text or symbol that appears in the smoky background?

Greg wrote 4 years 5 weeks ago


UDbmas wrote:
What happens if each circle is rotated until the numerals align? Could there be a hidden image, text or symbol that appears in the smoky background?

Perhaps I only see Fibonacci because the letters are common to Italian forms of words? The double 'c', the a's and o's - I feel like there's an Italian word that might be made out of this with some anagram permutations.

SusanH wrote 4 years 5 weeks ago

The Seven Clues

The pictures in DB's Facebook Album, I believe, just simply represents the numbers 1 through 7 (perhaps for the Seven Deadly Sins in Inferno). The mirrored face is 2. The Limbo is described in Canto 4 or 4 . SEI is Italian for 6. The other Roman numerals are self explanatory. Thoughts?

SusanH wrote 4 years 5 weeks ago


There are six sections:
1. Symbols Are Very Adept At Hiding The Truth
2. Ordo Ab Chao
3. Fibonacci Sequence/ Spiral
4. Cesaer's Box/ Aragon's Medallion/ The Path is Alive, Clues Are Hidden in Plain Sight.
5. Pythagorean Theorem/Tarty Sect
6. Metatron's Cube/Job 38.11/Symbols Can Be Very Adept At Hiding The Truth
I believe whatever puzzles are found in each section will take you to the same video. So far two for 3), one for 4), two for 5). I'm suggesting there will be seven (DB likes symbolism) answers taking you to the videos. One for 2) and one more for 4). 6) represents "sacred"--the Metatron is part of Sacred Geometry and the Bible of course is. Interesting 4) says the path is alive but Job 38:11 says we will go no further!

RalphK wrote 4 years 5 weeks ago

Some interconnections

Beginning with five, every other Fibonacci number is the hypotenuse of a right triangle with sides of integral length.

The basic definitions of trigonometry flow from the lengths of the sides of a right triangle whose hypotenuse corresponds to one of the radii of a unit circle.

The Fibonacci series, the Pythagorean Theorem, and the geometry of circles are very much interconnected.

RalphK wrote 4 years 5 weeks ago

The nine letters

I read them the same as Greg and agree that they have an Italian feel to them, although I don't know the language at all. I fooled around with an on-line Italian-English translator. The last five letters anagram to "rocca," which means rock or fortress. Unfortunately, the first four letters, catr, don't anagram to anything in Italian and definitely not to "digital."

RalphK wrote 4 years 5 weeks ago

Long shot

Arrange the nine letters in a V formation:

----R -A

Now you get to use the central letter O twice. With the second O now available, you can anagram the first five letters into two words in Italian: TROCA, which means "replacement." and CORTA, which means "short" or "little." Little Fortress sounds like something for which Langdon might be hunting.

RalphK wrote 4 years 4 weeks ago

Excerpt from finale

Langdon looked down at the makeshift tourniquet binding the knife wound in his left leg. He was bleeding through it, and waves of dizziness came over him. He knew time was short. Where could they be keeping her? Was she even alive at this point? All he had to go on were two words in Italian: Corta Rocca, the Little Fortress. He knew Florence well; there were only three structures he could think of that could be classified as true fortresses: The Palazzo dei Capitani di Parte Guelfa, the Fortezza de Basso, and the Forte di Belvedere. His head swam as he gazed down on the glistening lights of the beautiful city as evening fell. And then it hit him. The last of the three was connected to the Palazzo Vecchio, now the town hall of Florence, by means of an assortment of paths and tunnels, some of which were likely to have been sealed and forgotten for centuries. The huge structure was originally designed as a palace, but its crenellated battlements created the appearance of a giant fortress. The big. The little. She was there!

bgates87 wrote 4 years 4 weeks ago

Ralph, can you explain how

Ralph, can you explain how you got the idea of using the O twice? I figured out ROCCA but got stuck at that point, unsure what to do with the final 4 letters. Arranging the letters in a V and using the O twice just seems so arbitrary, I wonder what gave you that idea. Obviously the solution is correct regardless of how you arrived at it. Can I ask where you got that excerpt from as well?

RalphK wrote 4 years 4 weeks ago

why V?

Designers of puzzles have unique styles which persist from one to the next. Brown, or the person with whom he collaborates, is no exception. He likes anagrams. He also understands that one key to a good puzzle is that it is neither to easy or too hard. The first two assumptions, that it is an anagram and is in Italian, were reasonable. Greg saw this right away. But as you and I, and perhaps others, discovered, this led to a brick wall. The key of course is the extra O. Needing it renders the puzzle just hard enough but not too hard. But it would be unfair if there were no clues to suggest this approach. There may be some.

In the first place, there is only one O in the list and it is centrally located. Secondly, if you read about Dante's Inferno in Wikipedia, the numerical format for the work is actually 9 + 1. Finally, if you look at the images of fragments of the cover art on Brown's Facebook page (they were on his website earlier) one of them is a close up of the left hand portion of the letter W in his name. It appears to be an enormous V which has everything on it except a sign reading "use me please."

Using the extra O is still, as you say, somewhat arbitrary, and I'm not sure this is correct, but it feels right to me. I'd say maybe 50/50.

I wrote the imaginary excerpt myself partly for fun, but also to make the point that if the solution to the cover art is correct, it could nicely fit with Brown's writing style.

RalphK wrote 4 years 4 weeks ago

One more clue

Greg noted early on that the nine letters are arrayed directly opposite the first nine Roman numerals, yielding a one-to-one correspondence between the letters and the numbers. O, the central letter, nicely lines up with V, the central number.

RalphK wrote 4 years 3 weeks ago

Pythagorean triples and the calendar

A Pythagorean triple consists of three positive integers that satisfy the equation of the Pythagorean theorem. In every century, there are only four days whose dates are Pythagorean triples:


Interestingly, but probably coincidentally, the second one precedes the publication date by 2 days.

esraa wrote 4 years 3 weeks ago

Tarty sect

TARTY SECT is an anagram for Tetractys which is a triangular figure consisting of ten points arranged in four rows: one, two, three, and four points in each row, which is the geometrical representation of the fourth triangular number. As a mystical symbol, it was very important to the secret worship of the Pythagoreans.
The 2 words I typed in gave the same video pythagoras and tetractys.

UDbmas wrote 4 years 2 weeks ago

Medallion Letters

CATROCCA regular cryptogram to TESORETTO, a work by Brunetto Latini. But why? The Mappa Mundi?

UDbmas wrote 4 years 2 weeks ago

oops...spell check


Greg wrote 4 years 2 weeks ago

You are amazing!

UDbmas wrote:

Wow, how do you do this? Are you a code-breaker for the NSA?! ;)

Wonder whether clues in the novel might help readers to figure this out using Alberti's cipher disk or similar?

Well done to you! Now, to figure out the significance of Tessoretto. Well, the immediate significance is easy - the author of Tesoretto, Latini, was Dante's guardian and mentor after the death of his father, and Dante placed him in the circle of hell with the sodomites in his Inferno (though not in a nasty way - he shows great respect and compassion for him when he comes across him). Il Tesoretto is in the Laurentian Library too, a likely location in DB's book.

But what is significant enough about it to land it front and centre of the cover of the new book? Unless it's just one of a few codes that they've set for readers, that have no major signficance for the storyline, but are once again part of a competition. "The Treasure" certainly makes for both a related topic, and a fine endpoint for the treasure hunt Dan Brown has sent his readers on....

RalphK wrote 4 years 2 weeks ago

Threes and Ones


I also think you are on to something. At first glance it would be difficult to create a meaningful letter-substitution cryptogram out of a single string of only nine letters, but the fact that one letter appears three times and two more appear twice make your idea very plausible. The tie-in with Dante and Florence, as Greg describes, also lends very strong support to it.

It is possible, if we are dealing with a master craftsman, that the nine letter code was designed to lead in more than one direction. We now have two possible alternatives (I like yours better), and how cool would it be to have not just two, but three separate sub-puzzles flowing from a mere nine letters? My solution was based on changing the order of the letters, and yours on substituting letters for others. There are probably not too many other ways to squeeze anything out of a nine letter string. One possibility is to start by replacing letters with their numerical place in the alphabet. Going from the center of the medallion out, we get:


(We now enter the realm of shameless speculation)

If we ditch the two-digit numbers we are left with:


There are only six months in each century which have dates composed of only 1s and 3s. This is one of them, and of course, today (3/13/13) is one of those dates. The string above corresponds to 3/31/13, at least in the US.

One could go on and on about 3s and 1s:

One clue yields three hints.

Three sides yield one triangle. The three parts of the Divine Comedy, Inferno, Purgatorio, and Paradiso, start with the letters I and P. I is the ninth letter of the alphabet, and P is the sixteenth, corresponding to the two sides of the most famous right triangle (3 squared plus four squared equals 5 squared).

Each of these three canticas are divided into 33 cantos.

Dante was busy working on the Divine Comedy in the year 1313.

Finally, recall that the clues on Brown's recent books hinted at themes from the book to follow. Going back to the Lost Symbol cover, someone commented somewhere on this website that the clues could be integrated into a single final symbol, a 3x3 grid. The logic getting to it was a little far-fetched, but sounded reasonable to me. 3x3, along with the Masonic 33 tie-in, once again corresponds to one side of a 3-4-5 triangle, but also yields nine, thus tying in to the Inferno, and the Pythagorean Theorem figured prominently on Brown's website for the new book. The grid idea also brings to mind Cartesian coordinate systems, which also circle back to Pythagoras.

UDbmas wrote 4 years 2 weeks ago

Not as tough as it appears

I was still pursuing all avenues until the latest "Monday Masterpiece" image was posted. It's another Botticelli illustration from Inferno. This time Canto XV. Latini sticks out prominently so a quick search was all that was needed. Among the works mentioned in his bio is "il Tesoretto" and the pattern of letters jumped out. In Inferno Dante refers to Latini and his words in one translation follow (beg line 79). I have emphasized what I think will be an issue in the novel: (Dante is speaking):
“Were all my wish fulfill’d,” I straight replied,
“Thou from the confines of man’s nature yet
Hadst not been driven forth; for in my mind
Is fix’d, and now strikes full upon my heart,
The dear, benign, paternal image, such
As thine was, when so lately thou didst teach me
The way for man to win eternity:

And how I prized the lesson, it behoves,
That, long as life endures, my tongue should speak.
What of my fate thou tell’st, that write I down;
And, with another text to comment on,
For her I keep it, the celestial dame,
Who will know all, if I to her arrive.

Greg wrote 4 years 2 weeks ago

Still wow!

UDbmas wrote:
I was still pursuing all avenues until the latest "Monday Masterpiece" image was posted. It's another Botticelli illustration from Inferno. This time Canto XV. Latini sticks out prominently so a quick search was all that was needed. Among the works mentioned in his bio is "il Tesoretto" and the pattern of letters jumped out.

You make it sound so simple! But I'm beginning to suspect you're really Dan Brown under another name, giving us clues, such are your insights... ;P

I had guessed that it was likely some sort of substitution cipher for an Italian word, given the double consonant near the end followed by a vowel, and the overall cadences of the entire word. And I noticed the posted image of Canto XV, but Latini and Tesoretto certainly didn't jump to the forefront of my mind! You undersell your talents, you've made a brilliant leap there from a few minor clues and hunches to a fantastic decoding job.

In Inferno Dante refers to Latini and his words in one translation follow (beg line 79). I have emphasized what I think will be an issue in the novel: (Dante is speaking):
“Were all my wish fulfill’d,” I straight replied,
“Thou from the confines of man’s nature yet
Hadst not been driven forth; for in my mind
Is fix’d, and now strikes full upon my heart,
The dear, benign, paternal image, such
As thine was, when so lately thou didst teach me
The way for man to win eternity:

And how I prized the lesson, it behoves,
That, long as life endures, my tongue should speak.
What of my fate thou tell’st, that write I down;
And, with another text to comment on,
For her I keep it, the celestial dame,
Who will know all, if I to her arrive.

So are you thinking there will be a link here with the sacred feminine and the fidele d'amour, and Latini as being some sort of initiate in that sense ("thou didst teach me the way for man to win eternity")?

UDbmas wrote 4 years 2 weeks ago


Greg (et al)- I ran across something in passing and now I can't find it. I was wondering if any of you have read any info and can point me back it the right direction. When I was looking at the Monday Masterpieces, it seemed like they were all from three manuscripts (one is Yates-Thompson 36, another is possibly a 1481 della Magna edition with the Botticelli illustrations, and a 1544 one by Vellutello). I thought I read that early editions had somehow rephrased the Italian and there was some controversy or disagreement over the text. Have any of you come across that? Could one of Brown's devices be a dependance on having the right edition, or comparing editions to find one that has a real anomaly that could be a cipher?

UDbmas wrote 4 years 2 weeks ago

Nah, too short

Wow, how do you do this? Are you a code-breaker for the NSA?! ;)

Just a boring boomer who loves puzzles, has a knack for google and way too much curiosity. :)

Greg wrote 4 years 2 weeks ago

A Second Possibility

There is a second possibility for the significance of Tesoretto, one which I should have thought of immediately because I wrote about it in Inside Dan Brown's Inferno: the Tesoretto of Cosimo 1, the secret room in Palazzo Vecchio that Dan Brown is emerging from in the video on his website. This perhaps might make more sense, as a likely prime location in the next book - although Latini's work has perhaps more direct links to Dante and the Inferno.

UDbmas wrote 4 years 2 weeks ago

Oh that's right, Greg.

I had forgotten the secret door video.

RalphK wrote 4 years 2 weeks ago

Amazing indeed

You both might be correct. It's not hard to imagine a moment in the story when Langdon incorrectly starts out with Interpretation A (he goes to the library) and suddenly realizes it was Interpretation B (the little room in the Pallazo Vecchio) all along.

The path from the Pallazo Vecchio across the river by means of the Vasari Corridor is anything but a secret. Given that we can expect (1) at least one very claustrophobic experience for Langdon (2) at least one "do I go this way or that way?" moment and (3) that there might be one more clue on the cover staring us in the face, perhaps something along these lines unfolds:

Langdon discovers a secret route from the Palazzo Vecchio to the Forte de Belvedere that goes UNDER the river by means of an elaborate system of tunnels. To provide an added layer of security, this system was laid out in the form of a maze, with multiple blind alleys. If you take a wrong turn, and your torch burns out, you will be effectively buried alive, in the dark, beneath the inky waters of the Arno. This would probably bother Langdon. The key to picking all the right turns will naturally be some mathematical formula, probably based on the Fibonacci series, the Pythagorean Theorem, or both. Finally, if you stare at the cover one more time, the medallion is comprised of a series of concentric circles, which looks very much like one of those maze puzzles you might have played with (either with a pencil or a little silver ball) when you were a kid. The story of the Inferno would be a perfect metaphor for this potential decent into hell.

UDbmas wrote 4 years 2 weeks ago

Sacred Feminine

Yes, the Sacred Feminine pretty much has to be there to keep in context with the Langdon series. But right now I am torn between (in no particular order):

1.)--Someone wanting to restore the Duomo site to it's original patron St. Reparata. So he/she must somehow bring down the duomo without destroying the remains of the earlier temple below, using clues in Inferno to navigate ancient tunnels beneath Florence. Perhaps this fanatic may plan to reenact the "Harrowing of Hell" but with a sadistic twist of torturing the living to death at a shrine/statue dedicated to pre-Christ biblical characters like at the feet of Michelangelo's David.

2.)-- Someone who believes Dante either did not die, or was somehow ressurected, which is why his remains went missing for some time (maybe the remains now in Dante's Ravenna tomb aren't Dante?). This might lead the perpetrator to believe Latini did teach Dante how to be importal and now wants to hear the instructions from the horses mouth. Latini is still in pergatory so somehow he/she must get to the 3rd ring of the 7th circle without actually dying. Perhaps he/she is using Inferno either to choose what crimes will be committed to reach there, or again as a map to navigate beneath Florence to find the entrance to hell. And perhaps abducts his own "Beatrice" to be a forced angelic guide; he may select her from tourists visiting Dante sites which include Beatrice's tomb in Santa Margherita dei Cerchi.

3.)--It might be a bit of a reach and difficult to keep this plot-line animated, but it could be geo-political. The old battle between the two Guelph factions. Latini (and Dante) were both neck-deep in the political struggle. It's during Dante's time (and apparently coinciding with the beginning of his work on the Divine Comedy) that the story occurs recounted as part of DVC regarding the slaughter of the Templars on Friday the 13th (Oct. 13, 1307).

4.)--There could also be a pre-Christian ritual that is believed will lift an initiate into the immortal pantheon of the gods. Here again the ruins beneath the city will be in play and the individuals in Limbo like Odysseus and the early philosphers will provide "advice." And the gods would likely be assumed to demand a (human) sacrifice. Again we need a Beatrice.

The things in common to all three are likely the divination of "exact time" and "exact location" for which I suspect Inferno will be the instruction manual. Dante's dimensions of hell and his "signposts" as are discribed along his route with Virgil will be needed. But if my hunch is correct there will be at least 3 major manuscripts in play, and somehow there is a crucial difference in some overlooked part of the text. Langdon may jump to the "almost" right conclusion, but has chosen the wrong manuscript. The exact time will put in play the differing calendars (pagan solar, Gregorian, Julian, Islamic, Hebrew,...), meridian lines and the sunset clock in the Duomo. Alchemy almost has to be there and here the Voynich manuscript may be a key if someone thinks they understand the botanical section as a recipe/spell book, the cosmological part may be seen as the guide to choosing the correct calendar and time of day, and the anatomical section may be interpreted as the "how to" for the torture/sacrifice of victims. One possible twist is that it could be a bit more personal in that the fanatic may view himself/herself as Virgil and is attempting to lead Langdon through the "circles of hell" as his Dante to then "liberate" him by killing him.

*dang, I have way too much time on my hands!*

RalphK wrote 4 years 2 weeks ago

Metatron's Cube

The image at the bottom of Brown's website would be a great starting point for creating a maze. Imagine needing to get from the bottom circle to the top circle, but having to know the correct sequence of intervening circles to traverse. If you get the order wrong, you are toast! There are many ways to get from bottom to top in nine steps.

UDbmas wrote 4 years 2 weeks ago


Interesting Ralph. And bringing Metatron in pushes me a little more toward the search for immortality hunch.

RalphK wrote 4 years 2 weeks ago

Just for fun

Consider a maze based on the design of Metatron's Cube, and make the following assumptions:

1) You have to move from start to finish (bottom circle to top circle) in exactly ten moves, without entering the same circle twice. In other words, you have to make nine correct choices (representing the nine circles of hell) in a row out of the eleven available circles between the start and finish.

2) There is only one solution. If you choose any other path, you are doomed.

If you calculate the number of potential paths (start and finish fixed, 11 other intervening circles to pick from), there are 55 possible routes, so you probably wouldn't want to guess your way through.

55 is the sum of the integers from 1 to 10, sort of like a tetractys on steroids. It is also the 11th number in the Fibonacci sequence and is also a multiple of 11. Lots of elevens here.

RalphK wrote 4 years 1 week ago

Odds and Ends

Some of the other scattered clues may also be relevant in the context of the maze/circle idea. Ordo ab chao begins and ends with an O and the quote from Job is related to the discovery of a dead end. Finally, the street medallion was one of a series of circular "stepping stones" leading to a goal.

Going back to the tetractys, a second series of numbers which includes 55 are the sums of 1+2+...n. This might provide an alternative to picking the right sequence of circles.

Making 55 important might be an homage to Leonardo da Vinci. If you can dump the "da', his initials are LV.

inquisitive1 wrote 4 years 1 week ago

The Secret Door Video

Does anybody have any idea what the woman says as an answer to the question "Is there another room behind this ?". The part after "Yes, but not like this one. Its a ..." is a blur. Also, anybody know the painting from behind which Dan Brown emerges? Th video is dark and hazy, so I am guessing the intention was to blur whatever hint is hidden in it.
We must also note that the woman says, 'Yes' and she also says,'But its not like this one.' Is that a possible hint that there is a secret page on the site, not like the rest of the site. Just speculating though.

Greg wrote 4 years 1 week ago


Not sure what the woman says in the video. But the painting is "Banquet of Cleopatra", by Alessandro Allori. As I mention in Inside Dan Brown's Inferno, the hidden room that Dan Brown is emerging from (more properly, he's emerging from the stairwell - the actual room is up a flight of stairs) is the Tesorotto ('Little Treasure') of Cosimo I de Medici, which was a private room and storehouse for a number of his most treasured possessions (found within Palazzo Vecchio in Florence).

inquisitive1 wrote 4 years 1 week ago


Isn't the painting that you link a mirror image of the painting in the video? Any significance @Greg

Greg wrote 4 years 1 week ago

Vagaries of the Internet


That may just be the site I linked to mirroring it by mistake. Other art sites have it the way it is in the video, e.g.:


RalphK wrote 4 years 1 week ago

The Path

If you take the first letters of "The Path Is Alive, Clues Are Hidden In Plain Sight" you get:


The word PI can be seen one letter in starting from the beginning or the end of the letter string. Maybe this was a clue to look for PI going backwards and forwards somewhere, for example, with the publication date.

RalphK wrote 4 years 1 week ago

One more hidden PI

It was pointed out early on that the sentence "Symbols are very adept at hiding the truth" was modified from its original version, which had 37 letters, rather than the current 35, which is the product of two prime numbers, 5 and 7. There are two ways to correspondingly array the letters in the sentence:




Either way, PI is hidden as close to the centers of the letter arrays as you can get it, read vertically.

PI and/or circles are likely to play a significant role in the new book.

Ballesio Mauro wrote 4 years 3 days ago

Italian Translation

I've just compared the english verson of the prologue and the first chapter with the italian translation by Mondadori editor, to seek something interesting.

My findings are these:

1) The word on the medallion in the front cover has 10 letters (instead of 9) with 2 letter in the outer circle, and the word has changed in: CATROVACER. It seems simply: CERCA-TROVA, that is a reference to the woman's word "seek and find" ("cerca e troverai" in the italian version).

2) Maybe for some interesting reason the Langdon's word "Ve...sorry, Ve..sorry" has not been translated and left "as is" in the italian version. The assumption of Sierra Brooks is to complete them as "Very Sorry", but I think it could be a misdirection: "Ve..." could be something different that Langdon has found (Palazzo (VE)cchio, maybe, where the room called "Il Tesoretto" is), and this could be the reason why someone want to kill him.

3) CATROACCR has really only one mono-alphabetic translitteration into TESORETTO (I checked it with 245000 italian word list), but it seems that this reference was omitted in the italian cover.

So let's "seek and find" someting...

RalphK wrote 4 years 2 days ago

Pythagoras redux

I don't speak Italian, but when I went to the on-line translators, the variation on TROVA that was most frequently displayed was TROVARE. If you delete that from the Italian 10 letter sequence, you get CAC, which corresponds to 313 using a basic number/letter substitution. So you wind up with "Locate, or find, 313."

313 is an interesting number. It is a Pythagorean prime: it is both a prime number as well as the sum of two squares (12 and 13). It also might correspond to March of 2013.

It only seems fair that the Italians get their own puzzle given that the story largely takes place in their country.

Ballesio Mauro wrote 3 years 51 weeks ago


Is the enigmatic clue left in a renaissance fresco in the room called "Hall of Five Hundred" in Palazzo Vecchio, Firenze.
The phrase is written in white ink over a green flag that cannot be easily seen by a viewer on the floor level because it is located in the upper side of the paint.
The fresco is by Vasari, that probably over-painted an early work by Leonardo Da Vinci.
Some researcher told us that the enigmatic phrase may hide a secret cavity in the wall with a lost work by Leonardo (so called "The Lost Leonardo"). Such a discovery could be equivalent to a new MonaLisa.
Search the Net for Wikipedia: “The Battle of Anghiari” and change language to Italian…than find below CERCA-TROVA paragraph for some other very interesting explanations about it and its link to Dante's verses (you’ll not find it in teh Wikipedia English version, and what really was "searched and found..."
Will be interesting to read how Brown will use such words for its treasure-hunting...
Good Quest...

Ballesio Mauro wrote 3 years 51 weeks ago

TESORETTO and Lost Leonardo

Of course, if TESORETTO is still the secret code of the english front cover medallion, than linking the two codes (TESORETTO, CERCA-TROVA) I can just imagine and guess that in the fiction by Dan Brown, the "Lost Leonardo" (The battle of Anghieri) can be found in the secret room of Cosimo I de medici called "Il Tesoretto"

RalphK wrote 3 years 51 weeks ago


Looks pretty solid to me. Interestingly, you can get it from the original string by removing the last three letters and reattaching them to the front.

UDbmas wrote 3 years 51 weeks ago


But where are you getting the E? The American cover is CATROACCR, and the Italian adds the V, but still no E. I had thought maybe one of the Cs might be an E but even in the better photos of the cover they all appear to be Cs.
then maybe CATROVACCR = TESORIETTO (which may refer to Roman coins). This keeps the idea of "treasure" and the Medici bank as a possible thread in the plot (I think Greg is right on there).

Ballesio Mauro wrote 3 years 51 weeks ago


If you look better the inner circles, the "c" and the "e" are clearly different.
In general it seems strange to me that the italian translators had wanted to change the secret code in the front cover, but they do it. There are 10 letters. Could it be a plan by D.B. or simply luck to have the same starting letters "CATRO" followed by different ones to have both TESORETTO and CERCA-TROVA decoded.
The spanish preview edition doesn't show the front cover image.
Lets' consider also the fact that behind the sud-est wall of the Hall, on which there's the fresco with the enigmatic words "CERCA-TROVA" there's the secret room called "Tesoretto".
We have two clues, let's find another one and we have a prove.

Ballesio Mauro wrote 3 years 51 weeks ago

The secret codes in Dan Brown Inferno

Thanks to Mariano Tomatis we have this very nice article in his blog pages, both in english and italian, with full explanatory graphic, for the hypothesis found as far as now on the Inferno's front cover codes:

UDbmas wrote 3 years 51 weeks ago


Mariano Tomatis' blog is interesting and makes good points. But the hunt for Leonardo's lost battle is perhaps too well housebroken for it to be toothy enough for Brown. Unless he has uncovered something that no one else knows, that plot won't hold. Many already believe the DaVinci mural to be behind Vasari's and that the "Cerca Trova" does indeed reference the fresco hidden and safely tucked behind Vasari's inner wall. Brown tends to find things that are a bit more sensational and unexplored to wrap his plots around, but maybe this topic isn't as well known as I think it is and will be new enough to readers. The intro seems to imply something pretty cataclysmic and I don't think even a missing DaVinci yields itself to that unless there is something the master put in the painting that would unhinge the world. That scenario, while certainly interesting and valid, seems too close to DVC for Brown to revisit so closely.

As far as an impossible to decode clue goes, it isn't that much of a reach. Brown gave us the canto image that leads to his mentor Latini. Latini wrote Il Tesoretto. Tesoretto is the name used for Cosimo's little treasure room at the end of the secret passage Brown uses in one of the videos. After turning the letters from the US jacket inside-out and every which-way, the pattern just clicked when I saw the Latini title. Searching Il Tesoretto yielded not only references to the work itself, but also to the Palazzo Vecchio room. Whatever is, or was, in the room isn't likely to be the goal itself, but it may point the way to whatever bombshell Langdon needs to cipher out.

But I too wondered about all the Cs and if at least one could be an E. I really wish one of the clues would be a good hi-res image of the cover.

Ballesio Mauro wrote 3 years 51 weeks ago

Hi-Res image

The first chapter of the italian preview in .pdf format has the front cover image in Hi-Res. The last three letters are for sure CER.
How it will be used in the novel CERCATROVA and TESORETTO is still a mystery of course...

UDbmas wrote 3 years 51 weeks ago


Dang, I should have downloaded the Italian one!

Ballesio Mauro wrote 3 years 51 weeks ago

German Cover codes

Hey Guys…and what about the german cover?
It seems there are two or three levels of gears (also the medallion in the US and Italian cover could really be a gear or something like that ).
Could it be that Langdon will have to search for some strange mechanic device that must be deactivate just in time before some kind of catastrophic “Inferno” will be ignited – as UDbmas pointed out?
The words “Tesoretto” and “cerca-trova” may help him to find it?
And what about the numbering in the german front cover?
6. XXIII.91
7. XXIV.137
8. XXVII.116
(9.?) XXVIII.3(3?)

May they refer to Inferno’s circles, cantoes and specific verses.
Maybe some specific sins? There will be some ritual murder connected to Inferno sinners?

UDbmas wrote 3 years 51 weeks ago

NOW this is getting cool!

@Ballesio Mauro I think you may have hit on a point. We may need to figure out the puzzle on each cover for different clues. Now THAT is evil (and way cool!).

UDbmas wrote 3 years 51 weeks ago


It occurs to me now (even though I think it would be a bit of a disappointment), that since Brown and his publishers decided to release the prologue and first chapter as an addition to the DVC download, maybe he is indeed making this another DaVinci theme. The probing behind Vasari's mural was stopped last fall and there's been no further word. So maybe Brown figures it's safe enough to incorporate a "lost DaVinci" theme. After all it can't be proven either way right now, and it isn't likely that the inner wall will be videoed or photographed any time soon. I hope that isn't what he's done simply because I'd like him to break new ground. As fun as DVC is, it just seems like a cheat to revisit it this soon.

UDbmas wrote 3 years 51 weeks ago

German cover

In addition to the canto & line clues, there is also an "R" above the medallion, just right of center. Probably referencing the R langdon sees in his dream.

A pathway has been marked and an arrow given presumably to point the direction. The path makes a sharp curve through circle 6, up onto the "wall," makes a loop in circle 7, than back to the wall and (again presumably) to the center.

The "bridge" is broken in circle 6.

There is a faint background image. My guess is that it's an illustration of the winged Lucifer from one of the manuscripts we've been directed to in other clues. I don't think it's the Vellutello.

Greg wrote 3 years 51 weeks ago


Does someone have links handy to the best resolution versions of each cover?

UDbmas wrote 3 years 51 weeks ago

RE: covers

@Greg The Dan Brown website has a good link to the German publisher where you can download theirs.

Greg wrote 3 years 51 weeks ago


Thank you!

UDbmas wrote 3 years 51 weeks ago

Try this for Italian


If this link won't work, maybe you can find your way to Amazon's Italian site.

Ballesio Mauro wrote 3 years 51 weeks ago

French Edition

It has Ponte Vecchio in forground, with the words that Dante refers to be written over the Inferno's Door: "Lasciate ogni speranza voi ch'entrate".
The background seems to me a pavement mosaic. It isn't Laurentian Library Reading Room.
It's a strange choice anyway for the graphic...Maybe another clue?

agnieszka.ash wrote 3 years 51 weeks ago

the Job verse

When you click on the Bible verse an image of Sylas pops out - I give complete credit to my friend M. for finding that out

UDbmas wrote 3 years 51 weeks ago

RE: Job verse

WHOA! That is cool. I wonder if there are other spots on the site that yield Easter Eggs?

Ballesio Mauro wrote 3 years 51 weeks ago

The City of Dite

The german cover is a map in my opinion.
The 6-7-8-9 circles are the City of Dite in fact.
The broken ”bridge” between circle 6 and 7 is indeed the entrance, the gate of Dite (like double doors opened). The external rivets are the wall and towers.
The thin shape traced from the center and turning right and backward forming a lobe is Dante’s patway in Dite based on Manfredi Porema graphical comment of Inferno as here:
If you turn 90 degrees the picture you have the same. There’s also a small arrow that tells the verse, as pointed by UDbmas.
The background of circles 7 is fine grained dotted because it’s water-made (blood indeed): is the Flegetonte rivers.
The letters “BO”, and in the diagonal line below the letter “I” (from top left to down right) probably stand for (Bo)lge (I)nfernali (the name of inner circles).
The “R” near the 6th circles may refer to the R in the prologue, as UDbmas told, but I can't tell more.
Unfortunately the canto’s number and verse seems to have no relation with the circles yet.
Well, I guess that such map could be overlapped to the Florence’s City Map in some way. Langdon will be a modern Dante trying to reach the center.Than, where would be the center of Inferno in Florence? Look at the fresco “Final Judgement” in Florence Duomo: you will see a great Dante’s 3-faces winged Lucifer.

Another reference I found is related to “The write is on the wall” clue from Dan Brown’s site. It may refers to Book of Daniel - Ch.5, where a spiritic hand writes an enigmatic phrase on the wall during a feast and it is interpreted basically as a menace or an omen. I cannot link it to SEI or 2E1 or 5EL or 5E1.
But it may refers also to “cerca trova” writes on the wall of Palazzo Vecchio.

Ballesio Mauro wrote 3 years 51 weeks ago

It keeps ticking...

Clues on Dan Brow site refers to a countdown...Could it be that it doesn't refer simply to the publication date, but to a time-counter mechanic device.
It seems that the position of rivers Acheron, Styx and Phlegethon in the cover-graphics (IT-US-DE) match 3 gear-wheels - like a mechanic clock.
"Ticking" may refer to these rivers-circles that measure the time like a clock.
In the prologue there's a reference to a strange one-handed clock on the tower of Palazzo Vecchio. Maybe a veiled clue...
There are other fashinating clocks in Florence. Hey, Dan! what hell of device is this?

Ballesio Mauro wrote 3 years 51 weeks ago

Portuguese Cover

It's a mix of U.S. graphic and Italian secret code ("cerca-trova").

rajatsharma wrote 3 years 51 weeks ago

Why Silas ???

hey people , has anyone noticed that whenever a click is done at JOB 38:11 ( the last line of the web page ) , a picture of silas ( the main killer in the Da vinci Code movie ) is showed. Though , its only showed for a very small duration. Any IDEA , why's that ??

UDbmas wrote 3 years 50 weeks ago

German cover Canto references & more on bridges, the Duomo clock

Ballesio Mauro: Very cool! On the print I made of the German cover, there are 2 more letters after the "BO" one is under the "N" in "Dan" and then there is an E. Could the hidden letter be a G? Is BOGE the same as BOLGE?

In addition to the image (possibly of Lucifer?) faintly seen in as a white etching behind the title, that diagonal line you mention has a mate on the right of the circle. I think the upper part of the medallion is one of the illustrations that depicts hell as a cone.

Canto References:
XXXIII.91 (is in parentheses)
"Then they addressed me: 'Tuscan, you who come..."
"I am set down so far because I robbed..."
"the counsel that he gave was fraudulent;..."
"were, when alive, the sowers of dissension..."

So are we looking for a Tuscan thief and liar who caused a split? Salai looks like a good candidate.

For more on the bridges, see Canto 21, especially note beginning in line 106. Basically it's "You can go no further" Malacoda seems to be Hell's timekeeper. see: http://en.wikipedia.org/wiki/Malacoda

The Duomo clock's single hand moves Counterclockwise. And it isn't for telling the actual hour, but rather it's to keep track of the precise time of sunset and is reset weekly. See:

UDbmas wrote 3 years 50 weeks ago

RE: Why Silas

I have been wondering about things in the same way. It looks like all the background images (the stuff in black/white/gray) are from the previous books and movies.

Ballesio Mauro wrote 3 years 50 weeks ago

Salaì the devil, great catch!

How did you think about Salaì, the pupil of Leonard? If fits very well! Maybe Silas is phonetic anagram for Salaì, and Salaì means "devil" from arabian. It fits also the clue of Brunetto Latini (controversial sexuality of Leonardo, sodomits, and so on...)

Regarding the broken bridge in Canto 21, it fits two clues: 1) the Job 38:11verse (exactly the same words!) and 2) Ponte Vecchio (see French cover) that in 1333 was broken by a flood. But the sixth bolgia in which the broken bridge is mentioned by Dante is inside the VIII circle. So it doesn't match the graphic.
Ponte Vecchio is also famous for a long secet passageway made by Vasari for de Medici family (Cosimo I again) from Palazzo Pitti to Palazzo Vecchio.
The single-hand clock referenced in the prologue is the Palazzo Vecchio's tower clock, anyway it's interesting also this one.

Ballesio Mauro wrote 3 years 50 weeks ago

Salaì's sketch on a study for the Battle of Anghiari

Maybe it is not the correct track (too much Leonard and few Dante in this hints), but search Internet for this anyway: "Windsor, rL 12328 r (detail)".
It's a connection between the sacred feminine, "cerca-trova" and Salaì.
It's a "sheet of studies in pen and ink
for the Battle of Anghiari, c. 1504, on which a pupil,
perhaps Gian Giacomo Caprotti called Salaì, had already sketched
in charcoal the image of Leonardo’s Angel of the Annunciation."
It's a scabrous picture indeed, hidden by Windsor for years and discovered recently.

UDbmas wrote 3 years 50 weeks ago

RE: the Salai hit

This was one of those "Dang, I was hoping for something else" searches. Anyway, I took what I thought was the main word from each of the 4 canto lines indicated and googled them with "Renaissance". So my search was "Renaisance Tuscan Thief Liar Traitor" and the top hit was the wiki page for Da Vinci. In a quick scan of the page I found the terms Thief and Liar were in reference to Salai. Salai's wiki page isn't long, but there is enough to suggest there might be some sour grapes there, as well as the name translation and perhaps a suggestion that there might me some missing things (artwork?) that had been stolen by Salai. And the page suggested to have been sketched by Salai in Da Vinci's journal might make for a much needed comic relief moment.

I am also wondering again about the "Green Eyes" comment in the prologue. I think Salai was portrayed as having green eyes in Da Vinci's John the Baptist, in Da Vinci's portrait of him, and if (as Brown seems to be hinting at) Mona Lisa is actually him.

But in DVC, the decendants of Jesus and Mary Magdalen also have green eyes.

ARGH! my brain hurts.

Ballesio Mauro wrote 3 years 50 weeks ago

Brunetto Latini, Mappa Mundi and anotehr secret passage

We alredy know something about the clue of Brunetto Latini, Tesoretto and a secret passage in it.
Brunetto Latini, as guessed by UDbmas, is related to "Mappa Mundi" for the geographic knowledge passed to Dante.
Well, in the "Hall of Maps" in Palazzo Vecchio, where a well known "Mappa Mundi" is shown, there's a secret passage behind the map of Armenia that leads to the personal room of Bianca de Medici.
Maybe the clues posted by Brown aim to discover the secret passages he visited in Florence and he described in Inferno.
Brown promised a novel rich of secret passages in the early interviews. There's a museum's "tour of secret passages of Palazzo Vecchio". I bet he spent 4 Euros to do it!

UDbmas wrote 3 years 50 weeks ago

The mysterious R

If it turns out that the plot involves the hidden Da Vinci "Battle of Anghiari" then the "R" on the German cover and on the bare thigh in Langdon's cream could be for Rubens. It is his sketch that appears on the wiki article.

Ballesio Mauro wrote 3 years 50 weeks ago

The actual meaning of "cerca-trova"

If the motto “cerca trova” will not refer to a Lost Leonardo, than probably it will be used in its actual meaninig (as in the Vasari's fresco): “Who search the Freedom will find the Death”.
This situation may be referred to a man in flash and bones that is prisoner of a metaphorical Inferno: if he wants to escape from the pain, he must die.
Otherwise if Inferno is a real place or situation, than he must find a an exit in time. Maybe using a secret passage. ;-)

UDbmas wrote 3 years 50 weeks ago

cerca trova

Maybe it's telling Langdon to do what we do: use google?

Ballesio Mauro wrote 3 years 50 weeks ago

Search with Google

Why not?
Than he will find our posts. Are we part of the story?
It would be an interesting short-cut fiction/real life for the next plot. ;-)

UDbmas wrote 3 years 50 weeks ago
Ballesio Mauro wrote 3 years 50 weeks ago

Date in Florence

Very argue...
Now I realize why DVC eBook is delievered for free...and just few weeks before the release of Inferno.
DVC infact ends with a date between Robert and Sophie. Where? In Florence. Langdon say to have a lecture in Italy and booked a room for a week at Brunelleschi's.
...and the six-balls coat of arms of DeMedici Family (metathron-like) is a star of Dav - blade and chalice again. Coincidence?

Do someone know for sure whether Inferno is the follow up of DVC or "The Lost Symbols"?
If Inferno it's DVC follow up than I think Langdon should recognize Marie Chauvel just one month after...

Now I'm wondering if the cantos-verse clues (XXIII.91-XXIV.137-XXVII.116-XXVIII.33) do not refer to Dante's Inferno but to chapters-lines of Brown's book (DVC, Lost Symbol or Inferno itself). Do someone want to check this? I do not have the english original versions.

UDbmas wrote 3 years 50 weeks ago

DVC sequel?

I suspect if it's a DVC sequel, the "one month later" meeting probably already took place some time ago, but now Inferno may be set a number of years after that. And as far as him recognizing her, don't forget he has had a blow to the head. But the description of Marie in the last chapter clicked into place when I reread it. So did a lot of other things.

I think the Canto line numbers are likely still Inferno references.

There are a lot of Mary Magdalene coincidences that may come into play. I expect we will see Donatello's Magdalena Penitent statue, it's too striking not to use it (could there be some implication that it was meant as a reliquary for her actual remains?). The personification of Poetry is presented as a weeping woman at Dante's cenotaph (empty tomb) in Santa Croce. Mary Magdalene is often refered to as the weeping woman, and is depicted as weeping outside Jesus empty tomb. The other statue to the right of the cenotaph is Tyche (Fortuna) and her diadem is a 6-pointed star (Blade & Chalice).

One last curiosity MAY be coincidence: in DVC Langdon mentions the spelling in the verse found in the cryptex. He says ROSLIN is just an old spelling of ROSSLYN. However, Toros Roslin was a well known (at least in the High-Middle Ages and early Renaissance) 13th century Armenian artist. He seems mostly known for illustrated manuscripts (not of Dante's work, Roslin died in 1270). Could there be a Roslin work, or an image by someone else of Roslin near wherever the grail lies? Could that "R" be for Roslin the artist?

Of course the "R" could also be for Rodin - Gates of Hell & The Thinker (which may be a statue of Dante, it is the same figure as the one at the top of Gates of Hell).

inquisitive1 wrote 3 years 50 weeks ago

Letters in the smoke

First of all I am pretty sure that the Silus image wasn't on the site the first time I checked it. So the question, are all the secrets already planted? Secondly, if you notice carefully there is a stream of characters in the smoke in the lower left of the Silus image. Can anyone of you list what characters on it. Perhaps it means something,

UDbmas wrote 3 years 50 weeks ago

Silas smoke- GOOD CATCH!

I won't be able to do much until tonight, but you can screen capture the image so maybe someone else can run with it. . I could see (in no particular order) M V C infinity, A, and other symbols trailing off in a jumble down right.

To get a screen capture, hit the "print screen" key as soon as Silas starts to materialize, then paste it into a program like Paint or Photoshop. You may need to do it several timed to get clear images of more letters.

UDbmas wrote 3 years 50 weeks ago

Another website oddity

In the "news" section, the "Limbo" clue has a scroll bar and the image will move if you use the bar. None of the other "7 clues" pics do this. Maybe soon something will appear under the original image? Maybe that's why it's caption it "Keep watching"...

UDbmas wrote 3 years 49 weeks ago

Today's tweet

The head photo again. Dang, is it Bernart de Born we are looking for, or his specific crime? Or is it really a John the Baptist (the Baptistry) link? Or just a hint that one of the scenes will be a beheading, maybe as the 8th of the serial killings?

Ballesio Mauro wrote 3 years 49 weeks ago

Conection with XXVIII.33 and Bertrand

I see a link with the clue in German cover (canto-verse reference).

Sandro wrote 3 years 49 weeks ago

Voynich Manuscript

What is the relevance of the Voynich Manuscript do you think?

UDbmas wrote 3 years 49 weeks ago

RE: Voynich

2 speculations:

1) Brown may, for the sake of the story, have a hypothetical "original" Comedia and our fanatic may claim the Voynich is either that manuscript, or a direct encoded version.

2) The Shade (Sophie's brother?) may be using the Voynich's illustrations as a "how-to" manual to take a person to the brink of death to allow demon possession (Canto 33, starting line 121). Maybe Shade has created a demon army and our "Consortium" are members of a well-hidden in plain sight remnant militant order (Templars? Teutonic Knights?) who will have to battle them if they are loosed (perhaps unleashing a returned Silas)?

UDbmas wrote 3 years 49 weeks ago

RE: Bertran de Born and Canto 28

Maybe beheading is just one of the tortures that will be on the trail. Maybe a singer will be found decapitated--and posed head-in-hand like de Born--near Donatello's (or someone else's) John the Baptist statue?

Sandro wrote 3 years 49 weeks ago


I don't recall seeing the WORLD TITLES until yesterday.

Also the "S" on the ARAGO medallion is no longer visible and the text in some places seems to have "deteriorated".This is particularly noticeable in SYMBOLS ARE VERY ADEPT AT HIDING THE TRUTH-dark,almost horizontal line now across letters and bottom of letters disappearing. and WIDESPREAD ACCEPTANCE OF AN IDEA IS NOT PROOF OF IT'S VALIDITY section-general "ageing' of text.

In other sections e.g ORDO AB CHAO, TARTY SECT and FIBONACCI SERIES the deterioration is less noticeable.There is just some loss or fading of parts of the characters.

Sandro wrote 3 years 49 weeks ago


In the section THE PATH IS ALIVE..., the three lines are written so that the three "S's" in the sentence appear neatly aligned in a vertical column.

I wonder if 3 S's have any significance?

UDbmas wrote 3 years 49 weeks ago

RE: DB website

Cool! I think the "World Titles" link is definitely new. As far as the rest, the site looks the same for me, but my eyes aren't what they used to be. I can still see the "S" on the ARIGO medallion.

UDbmas wrote 3 years 49 weeks ago


On the "World Titles" page, the top banner, there is a tip that says :"Vasari" and just below is "1551"... That seems to point again) at the Battle of Scannagallo painting. I wonder if the "cerca trova" flag means to point behind the painting (at the rumored lost Da Vinci) or to tell us to look more closely at Vasari's painting itself?

Time to find a really big, hi-res image of it.

Ballesio Mauro wrote 3 years 49 weeks ago

Death of Leonardo by Vasari

The Vasari tips in the “World Editions” pages looks very interesting, because the date (as it is written below the name) should be a reference to birthday, death or publication date of a work, in this case: “Vite” (you can read it “Vite” on the same line on the right), but instead it’s none of them: it is the date of the battle of Scannagallo, as UDbmas pointed correctly, painted in Palazzo Vecchio over the Battle of Anghiari.

But another interesting clue is the hand-written phrase in italics on the left: “a sedere sul letto” and below “gli accidenti di”.
It can be completed in this way:

“egli per riverenza, rizzatosi [a sedere sul letto,]
contando il mal suo e [gli accidenti di] quello,
mostrava tuttavia quanto avea offeso Dio e gli
uomini del mondo, non avendo operato nell’arte
come si conveniva”.

It’an excerpt from “Vite” by Vasari: it’s precisely the death of Leonardo Da Vinci in the arms of the King (and probably this fact is not true…).
Leonardo, just before to die, was ill in bed, and so he thought how he offended God and mankind with mistakes in performing art. Was he referring again to the epic failure of his masterpiece, the Battle of Anghiari, that Vasari covered?

UDbmas wrote 3 years 49 weeks ago

@Ballesio Mauro

What stuck me in Vasari's article was that he seems to be implying that Leonardo left many things unfinished at his death, including both "The Last Supper" and "Mona Lisa" were left unfinished. If so, who finished them?

Ballesio Mauro wrote 3 years 48 weeks ago


Based on the research and intuition of Marco Mattia on Vasari's works, CATROVACER and CERCA TROVA are perfect anagrams of "TORRE VACCA", the old name of the tower of Palazzo Vecchio...
Maybe Dan Brown could have used this idea, that Vasari during the restoration works in the XVI century hidden something up there.

UDbmas wrote 3 years 48 weeks ago


Neat! Could Vasari homself have left CERCA TROVA as an anagram?

Edwardo wrote 3 years 48 weeks ago

Job 38:11

Did you guys notice that if you click the Job 38:11 at the bottom of dan brown's website, a picture of a hooded man comes up?

Greg wrote 3 years 47 weeks ago


Hi Edwardo,

Yes, a few people have noticed that Silas (as depicted in the movie version of The Da Vinci Code) pops up when you do that. We're pretty sure it didn't happen originally - for some reason it's been added more recently.

Ballesio Mauro wrote 3 years 48 weeks ago

Finnish Bookstore image

The unconventional circles disposition and rays may contain interesting information...
The same rounded traces are reported partially also on US and italian cover, maybe are non casual - here on finnish picture they can be measured clearly...

Edwardo wrote 3 years 47 weeks ago

words on inferno cover

I have bad eyesight and on the background of the inferno cover, i see words, one of which i think is limbo. Can anyone tell me the other words?

Ballesio Mauro wrote 3 years 47 weeks ago

@Edwardo - Covers words

Trying to answer to your question I found someting strange...
Well, on US cover the words are "sinners name" (in italian language). It's possible to read:
-(iracondi) et accidiosi
-prodighi et avari

On the Itaian cover instead the words are the "name of sins" (in italian languange). It's possible to read:
-accidioso (but should be: "accidia")
-ria (means "wickedness", but it's not a specific circle mentioned by Dante!)

I thought that "ria" was a mispelling (a graphical error) for "ira", but the portuguese cover that it's a mix of US graphic and italian words, has on top-left in plain text the word "ira", but near the medallion on the left ripped edge there's also the word "ria";
the italian cover has no ripped paper image so I assume it's not a trimmed word and for me now it's a strange choice...
Could it be a clue for something?

UDbmas wrote 3 years 47 weeks ago

German cover

Anyone identified the image behind the title on the German cover yet?

inquisitive1 wrote 3 years 47 weeks ago


I have been thinking on what the sentence "Symbols are very adept at hiding the truth" means and I had an epiphany. I think that the sentence is very literal in its idea. There are symbols scattered all over the site and could it mean that the secret is simply written. I thought that I should treat them as Roman characters and check for sentences or words or anagrams or anything that makes some meaning. The problem is that most characters don't resemble English alphabet. I don't have a very good knowledge of the symbols and have no idea of their origin. Can anyone of you guys tell me what those symbols are? A fair warning though : These symbols could ultimately mean, well, nothing but decorations thrown in by the site designers.

UDbmas wrote 3 years 47 weeks ago
Gooberz10 wrote 3 years 47 weeks ago

5 Secrets

I refer to the website puzzles as the 5 Secrets because there are five frames containing clues. If you right-click on the frames and save-as, you get file names of 'Int1 Overlay', 'Int2 Overlay', etc. Strangely, these saved images don't capture all of the content on that frame (still working on this significance). Anyway, I believe each Overlay holds one (or more) answers for the Metatron at the bottom.

This thread has uncovered 3 answers on Overlays #3, #4, #5. Each answer being relatively simple and each using a different cryptic mean (fib sequence, Caesar square, Anagram). I suspect the remaining solutions will use different methods simply for the purpose of variety. Of interesting note to me is that each answer uses a person's name: Fibonnaci, Voynich, Pythagoras. I believe that pattern will follow on the remaining two answers.

Overlay #1, "Symbols are adept...", reveals four of the 18 symbols used in all the Overlays (minus Pythagoras, Caesar, & Arago). Using Alchemy symbology, it seems there are 2 "fire" symbols and a "solution" symbol used here. The "V" symbol with the dot in the middle doesn't appear to be an alchemy symbol, unless you stretch the Zinc symbol to fit (V with a circle embedded). Alas, I have yet to crack this Overlay.

My observations of the 18 symbols -- It's clear that 15 of them are Alchemy (with relative certainty). The symbol in the bottom-left corner of Overlay #2, however, seems to be an ancient Rune symbol for "Inguz" or simply "Ing". The V-Dot symbol in the top-right corner of Overlay #1 also does not appear to belong with the Alchemy theme unless you extrapolate Zinc as mentioned above. Then there's the "Spiral" or @ symbol in the center of Overlay #3; which can be almost too many things. One last note, two of the symbols are used twice: Overlays #1 & #4 share the same Fire symbol and Overlays #3 & #5 share a Pulverize symbol.

Looking at Overlay #2, Ordo Ab Chao, it's clearly a masonic reference and with numerous anagram potentials. No luck here yet but my masonic knowledge is limited. A work in progress.

Well, I haven't offered any solutions but perhaps one of these observations can trigger a thought by someone...?

UDbmas wrote 3 years 47 weeks ago

@ Gooberz10

I get 17 symbols:
4 - 4 - 4 - 2 - 3
Coincidently, that is how many letters are on the facebook banner.
The website has a new feature now When you enter a wrong answer it gives one of 2 pop-ups.

Gooberz10 wrote 3 years 47 weeks ago

17 vs 18 symbols

I counted the spiral behind the Fib Sequence as the 18th symbol; although, I don't believe it will really count as a symbol when all's figured out. So, of the 17 "corner" symbols, there are 13 Alchemy (2 of which recur), 1 Rune, 1 unknown to me (V-with-Dot). So, if the symbols are indeed hiding something, then it's possible the hidden meaning to the seemingly out of place Rune & V-dot could play a role. I'm thinking the answer to Overlay #1 lies in this area.

tombedlam369 wrote 3 years 47 weeks ago

The Fibonacci numbers and the Metatron Cube-The lock and key?

Re; Metatron Cube symbol on D.B.'s website.
You've found the lock but not the key!
If this is the lock,then what is the key.
All is (hopefully) explained here.

The hidden 24 code in the Fibonacci numbers-how they create the Platonic solids and how Metatron's cube comes into all of this.


UDbmas wrote 3 years 46 weeks ago

Job 39:11

As I ponder what I think the cataclysmic event might be, Job 39:11 is reinforcing my hunch that the fanatic(s) intend to destroy Florence by a flood. The "thou" it refers to is the ocean.

UDbmas wrote 3 years 46 weeks ago


I meant Job 38:11...

Gooberz10 wrote 3 years 46 weeks ago


There are two pop-up responses to an incorrect input. "The answer is clear if you know where to look," being one of them. If you scroll through the 5 clue boxes, the first 3 boxes contain symbols that are distinctly larger and brighter (i.e. clearer) than the rest. Their alchemical labels being: Reverberation, Pulverize, and Solution. Coincidentally, the only two recurring symbols are Reverberation & Pulverize. Finally, they each sort of resemble a specific letter: R - A - S. It could be possible these specific symbols are "hiding a truth."

UDbmas wrote 3 years 46 weeks ago


I was thinking along those same lines, but broader. I am trying to anagram the 17 by just choosing the letters they resemble Right now I am using (alternate choices in parens):
R- V - S - O - (or D?)
B - U - (or G or I?) - X (or W?) - S
A - J - C (in the tiny circle) - F (or Y or E?)
R - V
Y - A - D

It's a long shot I know.

tbeyer wrote 3 years 46 weeks ago

Re-reading The DaVinci Code

When they gave away 500,000 free copies of an electronic version of The DaVinci Code, they may have been signalling the connections. MY own quick re-read lead me to some of them. http://keystoinferno.wetpaint.com/page/The+DaVinci+Code+Connection

Marcomattia wrote 3 years 46 weeks ago


My name is Marco Mattia and i apologize for the bad english.
The anagram of the words CERCA TROVA is TORRE VACCA, the ancient name of the tower of Palazzo Vecchio in Firenze, located nearby, just a few meters.
I solved this anagram in march 2012 and the news was told by italian press.
It is probably related to the painting by Leonardo da Vinci the "Battle of Anghiari".
I also discovered another message, absolutely unknown, in another painting of Giorgio Vasari, "La Madonna e i misteri del rosario" in the church of Santa Maria Novella in Firenze.
You can read the story on these website:

Thanks, Marco.

UDbmas wrote 3 years 46 weeks ago


Looks like I am not going to get to enjoy the cover quest because I don't have a compatible device. The app should have been released for all devices or at least available for computers as well as phones & tablets.

Greg wrote 3 years 46 weeks ago


UDbmas wrote:
Looks like I am not going to get to enjoy the cover quest because I don't have a compatible device. The app should have been released for all devices or at least available for computers as well as phones & tablets.

You may not be missing out on much. I downloaded the iPhone app. There's a nice little 'augmented reality' video that plays when you point it at an image of the book cover, but seems to be just more promo for the book. The other section, where you have to find 7 symbols, doesn't seem to do much. I snapped seven pictures of the wall, not even matching the symbols, and it just had a pop-up dialogue box from 'Robert Langdon' saying something along the lines of "Thanks for finding those for me".

The competition to win a signed book is simply posting a hashtag to Twitter, and hoping you get drawn out of the hat from all the other people that did the same thing. A lottery basically. (Anyhow, like The Lost Symbol competition, I'm not eligible because I'm not in the US or Canada...deserve a signed copy after all the work I've done on the last couple of books too! ;P )

Disappointing if that's all there is to it.

Ballesio Mauro wrote 3 years 46 weeks ago

Gear and mechanic concept

Looking at the Mondadori's trailer about translators task force, at the minute 1'03" it seems really that the medallion is a kind of gearwheel engaging other wheels by mean of its external toothed shape...Is this a ticking machine? Is it a bomb-timer? it's a "judging-machine" to send sinners to specific circles? It's the mechanism to enter a secret door that Langdon will unlock?

@tombedlam369: the site you posted is very impressive and contains very fitting hints! Wow!

@ Marco Mattia: thanks for join us and the links to your interesting and fitting research on the CERCA TROVA topic

UDbmas wrote 3 years 46 weeks ago

Medllion mechanism?

What about part of a clockwork? That's what it first looked like to me.

Ballesio Mauro wrote 3 years 46 weeks ago

German sneak preview and clear b/w mechanism

Look at the second page of germanpreview at this link...
No doubt, it's a mechanic gears. It looks like a clockwork also to me.


Ballesio Mauro wrote 3 years 46 weeks ago

New Canto-verse clue

From the german preview picture mentioned above there's another canto-verse clue (XIV.57) and the circle 9 canto verse can be better read ar (XXVIII.35)
The transparent lettes can be clearly read as:
The thik line that is Dante's path go through the center and turn left. The "R" is clearly a mark for something.

UDbmas wrote 3 years 46 weeks ago

Phone app

If it's just to get into the drawing, it looks like you can do it without the phone app. The Facebook page has a link that gives simple instructions. You just need to find some random representation that resembles one of the 7 symbols and upload it to twitter. So I guess even those like me with last year's androids can do that, with or without the app. I am not sure what happens when someone does a cover scan though.

Greg wrote 3 years 46 weeks ago


UDbmas wrote:
I am not sure what happens when someone does a cover scan though.

Basically once it sees the book cover it does a neat little 'augmented reality' trick, with a video superimposed on the book cover (the book cover collapses into pieces, and then there's video telling you to look for the seven symbols, the other part of the app). I might see if I can upload a video of it if I find time.

UDbmas wrote 3 years 46 weeks ago

Paintings in 7 sins videos

Each video is a 3+1 set-up. There are 3 paintings that dissolve into each other. BUT behind each is the appropriate Bruegel etching to match the sin.

tombedlam369 wrote 3 years 46 weeks ago

Getting deeper into the code.

We start to see the same patterning inherent in the Fibonacci numbers within the prime numbers.

UDbmas wrote 3 years 46 weeks ago

After watching today's re-release trailer:

Considering the tectonics of the area ad the imagery given, maybe somebody is trying to create a massive volcanic eruption or chain of eruptions.

Tectonic map of the world (zoom in and check out Italy):

Botticelli's diagram of Dante's Hell

tbeyer wrote 3 years 46 weeks ago

Iphone app

The Iphone app was published a few hours ago. Dan Brown: Inferno in the app store. But apparently we will have to wait for the actual cover to find the symbols.

RalphK wrote 3 years 46 weeks ago

Life of Pi

Happy Mother's Day as well as Happy Pythagorean Day. Today is one of four days each century (actually 14 if you include all the permutations) that corresponds to a Pythagorean triple, in this case, 5-12-13.

The first of these is 3-4-5. These correspond to the sides of a right triangle because 9 + 16 = 25. Now the 16th letter of the alphabet is P, and the 9th is I. The 25th letter is Y, which starts and ends clues on Brown's website as well as on the cover of The Lost Symbol. Indeed both begin and end with the same three letters (You and Key). So putting P and I together, PI = Y. So Pi is why.

Any way you look at it, plan on having nightmares about being back in your high school trigonometry class starting sometime soon.

tombedlam369 wrote 3 years 46 weeks ago

Dante and Fibonacci

The inscription on the gates of Hell turns out to be nine lines long (three verses of three lines each; numbers are terrifically important to Dante). "Per me si va tra la perduta gente", it says hauntingly ("Through me you go among the lost people"), and "Dinanze a me non fuor cose create/sed non eternal, e io eterno duro" ("Before me there was nothing that was created/Except eternal things. I am eternal".

Three verses of three lines each,


UDbmas wrote 3 years 46 weeks ago

7 sins videos

I have identified all except 4 of the 21 + 1 Renaissance paintings in the foreground, and been able to see the Bruegel etching behind 5 of the 7 videos. The paintings aren't all by the "usual suspects" nor are they all Italian.

(Since I can't use the app, I needed something to occupy myself with.)


Ballesio Mauro wrote 3 years 46 weeks ago

Black Plague

A chian vuclano eruption is interesting, but the Langdon's female partener should be a geologist... Instead she's a doctor and the cataclism would be medicine-related. The catastrophic event will be some kind of global disease or epidemy like black plague.

Some more hints to think about in these last few hours...


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