Secret of secrets
A novel
Readers rate it 3.5 (279 on Hardcover)
680 pages · Released 2025 · Doubleday
Content report card
What's inside
LGBTQ+ themes
Substance use
What it offers
A note for parents
This is a Dan Brown thriller in the Robert Langdon series, featuring murder, mystery, and pursuit across multiple cities. The plot involves dark themes and intense tension, though violence is typically not graphically depicted in Brown's work. The book explores science and mysticism in ways that encourage curiosity, but the thriller elements and mature subject matter make it best suited for older teens rather than middle-grade readers.
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From the publisher
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... 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.
Shelved under
- Crime, fiction
- Mysticism in literature
- Thrillers
- Fiction, thrillers, general
- Plot driven
- Weak Character Development
- Unloveable Characters
- Not Diverse Characters
- Diverse Characters
- A mix driven
- Strong Character Development
- Loveable Characters
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ISBN 9780385546898 · Doubleday