The Secret of Secrets: The Brilliant New Robert Langdon Thriller

Robert Langdon returns in this highly anticipated, race-against-time thriller from the global bestselling author of The Da Vinci Code and Angels and Demons. Harvard symbologist Robert Langdon faces his greatest challenge yet as he races to save the woman he loves and the future of humanity itself.

When celebrated academic Katherine Solomon disappears without a trace from their Prague hotel room, Robert Langdon is thrust far from his comfort zone. He must use his arcane knowledge to decipher the mysteries of the ancient, dangerous city of Prague, which is steeped in folklore and history. Langdon is stalked by a spectre from the city's dark past as he navigates vast castles, towering churches, and labyrinthine underground passages to uncover a conspiracy that threatens everything he holds dear.

• The stunning return of Harvard symbologist Robert Langdon.
• A conspiracy that tests Langdon's considerable brainpower.
• Set against the backdrop of historic and mysterious Prague.
• The first Robert Langdon novel in over eight years.
• Book 6 in the Robert Langdon series.

• Author: Dan Brown
• Binding: Hardcover
• Edition: 1st Edition
• Language: English
• Print Length: 688 pages
• Publication Date: September 9, 2025
• ISBN-10: 1787634558
• ISBN-13: 978-1787634558
• Dimensions: 16.4 x 4.6 x 24.2 cm
• Weight: 500 g

Dive into Dan Brown's latest intellectual cliffhanger, a battle fought not just for survival, but for the future of humanity, hidden within the shadow city of Prague.