The Lost Symbol (Robert Langdon #3)
As the story opens, Harvard symbologist Robert Langdon is summoned unexpectedly to deliver an evening lecture in the U.S. Capitol building. Within minutes of his arrival, however, the night takes a bizarre turn. A disturbing object -artfully encoded with five symbol - is discovered in the Capitol building. Langdon recognizes the object as an ancient invitation..one meant to usher its recipient into a longlost world of esoteric wisdom.
When a Langdon's beloved mentor, Peter Solomon - a prominent Mason and philanthropist - is brutally kidnapped. Langdon realizes his only hope of saving Peter is to accept this mystical invitation and follow wherever it leads him. Langdon is instantly plunged into a clandestine world of Masonic secrets, hidden history and never-before-seen location-all of which seem to be dragging him toward a single, inconceivable truth.