The long-awaited new race-against-time thriller from the global bestselling author of The Da Vinci Code and Angels & Demons returns Harvard symbologist Robert Langdon in his sixth adventure. This novel pits Langdon against a conspiracy that will test his considerable brainpower and take him to the edge of losing all that he holds dear.

Accompanying celebrated academic, Katherine Solomon, to a lecture in Prague, Robert Langdon’s world spirals out of control when she disappears without trace from their hotel room. Far from home and out of his comfort zone, Langdon must pit his wits against forces unknown to recover the woman he loves.

Prague, an old and dangerous place steeped in folklore and mystery, becomes the setting where Langdon is stalked by a spectre from the city's dark past. He must use all of his arcane knowledge to navigate a shadow city hiding in plain sight, one that has successfully kept its secrets for centuries.

• The stunning return of Harvard symbologist Robert Langdon.
• A race-against-time thriller involving a conspiracy testing Langdon's considerable intellect.
• Set primarily in the historic and mysterious city of Prague.
• Written by Dan Brown, author of global bestsellers like The Da Vinci Code.
• Book 6 in the Robert Langdon series.

• Author: Dan Brown
• Binding: Paperback
• Language: English
• Print Length: 720 pages
• Publication Date: July 2, 2026
• ISBN-10: 0552178012
• ISBN-13: 978-0552178013
• Dimensions: 12.8 x 4.5 x 19.8 cm
• Weight: 488 g

Dive into this propulsive, hard-to-put-down mystery from a master of the brainy, twisty thriller.