The Harvard professor of symbology Robert Langdon wakes up in a hospital at midnight. Disoriented and with a head injury, he remembers nothing of the past thirty-six hours, including how it got there or the source of the macabre object that doctors have discovered among his belongings. With a relentless killer chasing them around Florence, and the ingenious Dr. Langdon Brooks Sienna are forced to flee. Embarking on a terrifying journey, they must unravel a series of codes developed by a brilliant scientist whose obsession with the end of the world is matched only by his passion for one of the ever written influential works: Hell, the dark epic poem of Dante.