Harvard symbologist Robert Langdon answers a sudden request to speak at the U.
S. Capitol Building. Before the lecture can begin, a disturbing relic bearing five encoded symbols is found on the premises, and he reads it as an ancient invitation into a vanished realm of esoteric and dangerous knowledge.
Then his mentor, Peter Solomon, a lifelong Mason and respected philanthropist, is kidnapped, leaving Langdon no path to save him except to accept that invitation.
The search pulls him into a clandestine world of Masonic secrets, buried history, and a revelation almost too dangerous to face.
A frightening enemy stays close, measuring every step he takes.
