The Secret of Secrets - (Robert Langdon Book 6)

Robert Langdon finds himself in Prague with Katherine Solomon, where a lecture invitation turns into a nightmare when she disappears from their hotel. Stranded in an unfamiliar city, the Harvard symbologist must rely on his expertise in arcane knowledge to untangle the truth. The search draws him into a labyrinth of ancient folklore and modern danger, as a specter from the past stalks his every move.

In this sixth installment of the Robert Langdon series, Dan Brown delivers a high-stakes international thriller blending espionage, amateur sleuthing, and suspense. Langdon confronts a conspiracy hidden in plain sight, a shadow city guarding centuries-old secrets that threaten everything he holds dear. The Secret of Secrets is an action-packed mystery where historical enigmas collide with a desperate race against time.