Harvard professor of symbology Robert Langdon awakens in a hospital in the middle of the night. Disoriented and suffering from a head wound, he recalls nothing of the last 36 hours, including how he got there...or the origin of the macabre object that his doctors discover hidden in his belongings. Langdon's world soon erupts into chaos, and he finds himself on the run in Florence with a stoic young woman, Sienna Brooks, whose clever maneuvering saves his life.

Harvard symbologist Robert Langdon is summoned to deliver an evening lecture in the U.S. Capitol. Within minutes of his arrival, the night takes a bizarre turn. A disturbing object is discovered in the Capitol Building. The object is an ancient invitation, meant to usher its recipient into a long-lost world of hidden esoteric wisdom. And when Langdon's mentor is kidnapped, Langdon's only hope of saving him is to accept this invitation and follow wherever it leads him.

World-renowned Harvard symbologist Robert Langdon is summoned to a Swiss research facility to analyze a cryptic symbol seared into the chest of a murdered physicist. What he discovers is unimaginable: a deadly vendetta against the Catholic Church by a centuries-old underground organization, the Illuminati. Desperate to save the Vatican from a powerful time bomb, Langdon joins forces in Rome with the beautiful and mysterious scientist Vittoria Vetra.

While in Paris on business, Harvard symbologist Robert Langdon receives an urgent late-night phone call. The elderly curator of the Louvre has been murdered inside the museum, a baffling cipher found near the body. As Langdon and gifted French cryptologist, Sophie Neveu, sort through the bizarre riddle, they are stunned to discover a trail of clues hidden in the works of Da Vinci, clues visible for all to see and yet ingeniously disguised by the painter.

When the NSA's invincible code-breaking machine encounters a mysterious code it cannot break, the agency calls its head cryptographer, Susan Fletcher, a brilliant, beautiful mathematician. What she uncovers sends shock waves through the corridors of power. The NSA is being held hostage, not by guns or bombs, but by a code so complex that if released it would cripple U.S. intelligence.

The tomb of China’s First Emperor, guarded by an underground army of terra-cotta warriors, has remained sealed for more than 2,000 years. Though it’s regarded as one of the greatest archaeological sites in the world, the Chinese government won’t allow anyone to open it. Why? That question is at the heart of a dilemma faced by former Justice Department operative Cotton Malone, whose life is shattered when he receives an anonymous note carrying an unfamiliar Web address.

When Napoleon Bonaparte died in exile in 1821, he took to the grave a powerful secret. As general and emperor, he had stolen immeasurable riches from palaces, national treasuries, and even the Knights of Malta and the Vatican. In his final days, his British captors hoped to learn where the loot lay hidden. But he told them nothing, and in his will he made no mention of the treasure. Or did he?

Cotton Malone retired from the high-risk world of elite operatives to lead the life of a rare-book dealer. But his quiet existence is shattered when he receives an anonymous e-mail: " You have something I want. You're the only person on earth who knows where to find it. If I don't hear from you, you will be childless." His ex-wife confirms that their teenage son has been kidnapped, and it becomes clear that those responsible will stop at nothing to get what they want: the lost library of Alexandria.

As the burning city of Acre falls from the hands of the West in 1291, a young Templar knight, his mentor, and a handful of others escape to the sea carrying a mysterious chest. In present day Manhattan, four masked horsemen dressed as Templar Knights steal a strange device. In the aftermath, an FBI investigation is led by anti-terrorist specialist Sean Reilly. Soon, he and archaeologist Tess Chaykin are drawn into the dark, hidden history of the crusading knights.

The ancient order of the Knights Templar possessed untold wealth and absolute power over kings and popes until the Inquisition, when they were wiped from the face of the earth, their hidden riches lost. But now two forces vying for the treasure have learned that it is not at all what they thought it was, and its true nature could change the modern world.