The Secret of Secrets
by Dan Brown
The Secret of Secrets is Dan Brown's sixth Robert Langdon thriller, published on 9 September 2025 by Doubleday in New York and by Bantam in the UK. Langdon goes to Prague with Katherine Solomon for her lecture, and when she disappears from their hotel he has to find her.
- Editions tracked
- 2
- First published
- Doubleday, New York, 2025
- First UK edition
- Bantam, 2025
- Series
- Robert Langdon series
The Secret of Secrets by Dan Brown was first published in 2025. We track 2 editions.
Which edition do you have?
Editions
- Doubleday2025 Hardback · Robert Langdon series 6 I own The Secret of Secrets, Doubleday 2025 Log in to want this
- Penguin Random House2025 Other · Robert Langdon series 6 I own The Secret of Secrets, Penguin Random House 2025 Log in to want this
We have not yet researched the issue points for this book. If you know how to tell the first from later printings, tell us and we will credit you once it is checked against a second source.
Awards, adaptations and setting
In print
- Editions recorded
- 8 on Open Library, 4 in English
From Wikidata and Open Library, both CC0. A prize or a new adaptation often lifts demand for the first printing.
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Read the guide →7 min readDust Jackets Explained: Why the Jacket Drives a Book's Value
For most books published since the 1920s, the original dust jacket carries a large share of the value, often most …
Read the guide →Frequently asked questions
How many editions of The Secret of Secrets are there?
We track 2 editions of The Secret of Secrets. Each has its own page with how to identify it.
When was The Secret of Secrets first published?
The Secret of Secrets by Dan Brown was first published in 2025.
Where these facts come from
- The Secret of Secrets, Penguin Books UK, 2025 (penguin.co.uk)
- The Secret of Secrets: editions, Open Library (openlibrary.org)
Every fact on this page was checked against the sources listed. Checked 7 November 2026. Reviewed by Harriet Ellis; read how we check facts.