Bestselling author Dan Brown has thrilled fans with the announcement of his latest Robert Langdon novel, The Secret of Secrets. Revealed on his verified Facebook page on 29 January, the book is set to hit shelves on 9 September 2025.

This highly anticipated release once again follows Harvard symbologist Robert Langdon as he finds himself embroiled in a complex and dangerous mystery. This time, the stakes are deeply personal: Langdon’s girlfriend, Katherine Solomon, vanishes under mysterious circumstances, plunging him into a desperate search for answers.

The quest to find Katherine takes Langdon on a thrilling journey that begins in the historic city of Prague. From there, he is drawn into a labyrinth of ancient mythology, cutting-edge scientific breakthroughs, and shadowy secret organizations. Racing against time, he must unravel intricate clues and decipher cryptic symbols to uncover the truth behind Katherine’s disappearance — and the secrets lurking beneath the surface.

Fans of Brown’s signature blend of history and suspense can expect another captivating read filled with twists, turns, and thought-provoking themes. The Secret of Secrets promises to be a gripping adventure that will keep readers on the edge of their seats until the final page.

Mark your calendars — Robert Langdon is back!