n Paris, Harvard symbologist Robert Langdon is awakened by a phone call in the dead of the night. The elderly curator of the Louvre has been murdered inside the museum, his body covered in baffling symbols.

"Blockbuster perfection.... A gleefully erudite suspense novel." --The New York Times

"A pulse-quickening, brain-teasing adventure." --People

As Langdon and gifted French cryptologist Sophie Neveu sort through the bizarre riddles, they are stunned to discover a trail of clues hidden in the works of Leonardo da Vinci--clues visible for all to see and yet ingeniously disguised by the painter.

Even more startling, the late curator was involved in the Priory of Sion--a secret society whose members included Sir Isaac Newton, Victor Hugo, and Da Vinci--and he guarded a breathtaking historical secret. Unless Langdon and Neveu can decipher the labyrinthine puzzle--while avoiding the faceless adversary who shadows their every move--the explosive, ancient truth will be lost forever.