{"schema_version":"bf_book_companion_v1","release_id":"20260515T080002Z-pairingsrefresh","book":{"amazon_purchase_url":"https://www.amazon.com/dp/B0DVQTGDCX?tag=bookfrontier-20","asin":"B0DVQTGDCX","authors":["Dan Brown"],"book_id":"9798217170661","canonical_url":"https://bookfrontier.com/books/the-secret-of-secrets-B0DVQTGDCX","cover_image_url":"https://img.bookfrontier.com/9798217170661.jpg?v=20260515T080002Z-pairingsrefresh%3A2026-05-15T08%3A00%3A02Z","description":"The world’s most celebrated thriller writer returns with his most stunning novel yet—a propulsive, twisty, thought-provoking masterpiece that will entertain readers as only Dan Brown can do. Robert Langdon, esteemed professor of symbology, travels to Prague to attend a groundbreaking lecture by Katherine Solomon—a prominent noetic scientist with whom he has recently begun a relationship. Katherine is on the verge of publishing an explosive book that contains startling discoveries about the nature of human consciousness and threatens to disrupt centuries of established belief. But a brutal murder catapults the trip into chaos, and Katherine suddenly disappears along with her manuscript. Langdon finds himself targeted by a powerful organization and hunted by a chilling assailant sprung from Prague’s most ancient mythology. As the plot expands into London and New York, Langdon desperately searches for Katherine . . . and for answers. In a thrilling race through the dual worlds of futuristic science and mystical lore, he uncovers a shocking truth about a secret project that will forever change the way we think about the human mind.","forthcoming":false,"isbn13":"9798217170661","publication_date":"20250909","publisher":"Diversified Publishing","slug":"the-secret-of-secrets","subtitle":"A Novel","title":"The Secret of Secrets"},"discovery":{"categories":{"all":[{"bisac_code":"FIC031060","confidence_band":"medium","label":"Political Thrillers","score":0.8051,"source":"bisac_hint_model"},{"bisac_code":"FIC031070","confidence_band":"medium","label":"Supernatural Thrillers","score":0.8042,"source":"bisac_hint_model"},{"bisac_code":"FIC031010","confidence_band":"medium","label":"Crime Fiction","score":0.7979,"source":"bisac_hint_model"}],"hint":[{"bisac_code":"FIC031060","confidence_band":"medium","label":"Political Thrillers","score":0.8051,"source":"bisac_hint_model"},{"bisac_code":"FIC031070","confidence_band":"medium","label":"Supernatural Thrillers","score":0.8042,"source":"bisac_hint_model"},{"bisac_code":"FIC031010","confidence_band":"medium","label":"Crime Fiction","score":0.7979,"source":"bisac_hint_model"}],"publisher":[{"bisac_code":"FIC002000","confidence_band":"high","label":"Action & Adventure","score":1,"source":"onix_publisher_code"},{"bisac_code":"FIC030000","confidence_band":"high","label":"Suspense","score":1,"source":"onix_publisher_code"},{"bisac_code":"FIC036000","confidence_band":"high","label":"Tech Thrillers","score":1,"source":"onix_publisher_code"}]},"genres":[{"label":"Political Thrillers","score":0.8051,"slug":"political-thrillers"},{"label":"Supernatural Thrillers","score":0.8042,"slug":"supernatural-thrillers"},{"label":"Crime Fiction","score":0.7979,"slug":"crime-fiction"}],"reader_fit":["Good for fans of Dan Brown's Robert Langdon series","Readers who enjoy thrillers blending science and mythology"],"related_lists":[],"series":null,"similar_books":[{"authors":["John Grisham"],"book_id":"9780553393484","cover_image_url":"https://img.bookfrontier.com/9780553393484.jpg?v=20260515T080002Z-pairingsrefresh%3A2026-05-15T08%3A00%3A02Z","score":24.1317,"title":"Rogue Lawyer","url":"https://bookfrontier.com/books/9780553393484"},{"authors":["Robert Crais"],"book_id":"9780345434494","cover_image_url":"https://img.bookfrontier.com/9780345434494.jpg?v=20260515T080002Z-pairingsrefresh%3A2026-05-15T08%3A00%3A02Z","score":21.7737,"title":"Hostage","url":"https://bookfrontier.com/books/9780345434494"},{"authors":["Lawrence Wright"],"book_id":"9780593686249","cover_image_url":"https://img.bookfrontier.com/9780593686249.jpg?v=20260515T080002Z-pairingsrefresh%3A2026-05-15T08%3A00%3A02Z","score":21.7056,"title":"The Human Scale","url":"https://bookfrontier.com/books/9780593686249"},{"authors":["John Grisham"],"book_id":"9780345530578","cover_image_url":"https://img.bookfrontier.com/9780345530578.jpg?v=20260515T080002Z-pairingsrefresh%3A2026-05-15T08%3A00%3A02Z","score":21.7023,"title":"The Racketeer","url":"https://bookfrontier.com/books/9780345530578"},{"authors":["Stacey Abrams"],"book_id":"9780593466988","cover_image_url":"https://img.bookfrontier.com/9780593466988.jpg?v=20260515T080002Z-pairingsrefresh%3A2026-05-15T08%3A00%3A02Z","score":21.3997,"title":"Rogue Justice","url":"https://bookfrontier.com/books/9780593466988"},{"authors":["John Sandford"],"book_id":"9798217294497","cover_image_url":"https://img.bookfrontier.com/9798217294497.jpg?v=20260515T080002Z-pairingsrefresh%3A2026-05-15T08%3A00%3A02Z","score":21.3718,"title":"Revenge Prey","url":"https://bookfrontier.com/books/9798217294497"},{"authors":["Scott Turow"],"book_id":"9781455553549","cover_image_url":"https://img.bookfrontier.com/9781455553549.jpg?v=20260515T080002Z-pairingsrefresh%3A2026-05-15T08%3A00%3A02Z","score":21.2884,"title":"Testimony","url":"https://bookfrontier.com/books/9781455553549"},{"authors":["John Grisham"],"book_id":"9780593669907","cover_image_url":"https://img.bookfrontier.com/9780593669907.jpg?v=20260515T080002Z-pairingsrefresh%3A2026-05-15T08%3A00%3A02Z","score":20.9174,"title":"The Widow","url":"https://bookfrontier.com/books/9780593669907"}],"topics":[{"evidence_refs":["keyword:kindle books best sellers"],"label":"Best","score":0.7961,"slug":"best"},{"evidence_refs":["keyword:kindle books best sellers"],"label":"Sellers","score":0.3613,"slug":"sellers"},{"evidence_refs":["keyword:best mystery books"],"label":"Mystery","score":0.1754,"slug":"mystery"},{"evidence_refs":["keyword:kindle books best sellers"],"label":"Kindle","score":0.0645,"slug":"kindle"}],"what_you_get":["Themes: mystery, science vs. belief, ancient mythology.","Pacing: fast, momentum-driven storytelling.","Story elements: missing manuscript, powerful secret organization, race against time."]},"llm_signals":{"confidence":0.9,"pacing":"fast","reader_fit":["Fans of Dan Brown's Robert Langdon series","Readers who enjoy thrillers blending science and mythology"],"themes":["mystery","science vs. belief","ancient mythology"],"tropes":["missing manuscript","powerful secret organization","race against time"]},"source_presence":{"amazon":true,"book_detail":true,"goodreads":true,"llm_signals":true,"similarity_seed":true},"stats":{"amazon_ratings_count":0,"goodreads_ratings_count":166700,"goodreads_reviews_count":16612,"quality_score":1}}