The Secret of Secrets: A Novel

· Robert Langdon Series Book 6 · Sold by Doubleday
4.3
267 reviews
Ebook
688
Pages
Eligible

About this ebook

INSTANT #1 NEW YORK TIMES BESTSELLER • THE NEW ROBERT LANGDON THRILLER FROM THE ICONIC AUTHOR OF THE DA VINCI CODE

“A master of the brainy, twisty thriller. . . . The Secret of Secrets is perhaps his most ambitious undertaking yet: a dense thriller that is also a meditation on the nature, and the possible future, of human consciousness.”—Los Angeles Times

“So riveting you’ll want to clear your calendar.”—USA Today

Robert Langdon, esteemed professor of symbology, has traveled to Prague to attend a groundbreaking lecture by Katherine Solomon—a prominent noetic scientist with whom he has recently begun a romantic relationship. Katherine is on the verge of publishing a breakthrough book that contains explosive scientific discoveries about the nature of human consciousness . . . revelations that threaten to disrupt centuries of established belief.

When a brutal murder catapults the trip into chaos, Katherine suddenly goes missing—and her manuscript disappears. Desperate to find the woman he loves, Langdon embarks on a thrilling race through the mystical landscape of Prague, ruthlessly hunted by a powerful organization and a chilling assailant sprung from the city’s ancient mythology.

As the action expands to London and New York, Langdon plunges into the dual worlds of futuristic science and historical lore—navigating a labyrinth of codes and symbols . . . and finally uncovering a shocking truth about a secret project that will forever change the way we think about the human mind.

Look for more Robert Langdon novels:
The Da Vinci Code
The Lost Symbol
Inferno
Origin

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Ratings and reviews

4.3
267 reviews
Tanner
September 29, 2025
Good writing, keeps you hooked. However, it could have used another couple rounds of editing with some characters being cut or better utilized. Also, Brown has a bad habit of showing instead of telling, and repetitively doing so (we know Katherine likes to buck the academic consensus, we understood that 20 pages in, no need to keep reminding us). While I found the stuff the CIA was working on somewhat interesting, the whole premise of the book is a bit contrived, same with who the Golem is. Not to mention, the publisher character becomes redundant a quarter through the book and then is strung along He's also a little cringe. Regardless, the book kept me hooked for a weekend and explored topics that are kind of interesting.
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Brandon Smith
October 10, 2025
I'll be honest, not his best work. The story is intriguing and exciting, but honestly I feel like Robert Langdon the cryptographer isnt used the same as previous books. In previous books he did a ton of deciphering of symbols to find clues , but in this book he's mostly being reactionary. very little cryptography at all, short of a few stretches that clearly was Dan Brown saying "I want Langdon to end at point B how can we flub it to make that happen?". I dont usually say a book wasn't worth my time or money, but in this instance, I will say its just not Brown's best work, which kinda sucks considering how long we waited for another Langdon book and how excited I was for it. Shame.
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Greg Roberts
December 9, 2025
As a Dan Brown fan, I looked forward to the release of this book. I was honestly disappointed in that it was a shift from his previous background and plots. The story was interesting but found it too detailed and unnecessarily long. Still, I hope there will be another book.
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About the author

Dan Brown is the author of eight #1 bestselling novels, including The Da Vinci Code, which has become one of the bestselling books of all time, as well as Origin, Inferno, The Lost Symbol, and Angels & Demons. His thrillers have captivated readers worldwide and been the subject of intellectual debate and speculation. He is also the author of the bestselling children’s book Wild Symphony. Brown’s novels are published in 56 languages internationally, with over 250 million copies in print.

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