THE #1 WORLDWIDE BESTSELLER FROM THE ICONIC AUTHOR OF THE DA VINCI CODE AND THE NEW ROBERT LANGDON THRILLER, THE SECRET OF SECRETS "Impossible to put down." -The New York Times "Thrilling and entertaining, like the experience on a roller coaster." -Los Angeles Times Famed Harvard symbologist Robert Langdon answers an unexpected summons to deliver a lecture at the U.S. Capitol Building. His plans are interrupted when a disturbing object-artfully encoded with five symbols-is discovered in the building. Langdon recognizes in the find an ancient invitation into a lost world of esoteric, potentially dangerous wisdom. When his mentor, Peter Solomon-a long-standing Mason and beloved philanthropist-is kidnapped, Langdon realizes that the only way to save Solomon is to accept the mystical invitation and plunge headlong into a clandestine world of Masonic secrets, hidden history, and one inconceivable truth . . . all under the watchful eye of a terrifying enemy. Look for more Robert Langdon novels: The Da Vinci Code Inferno Origin The Secret of Secrets