August, 1911: The Mona Lisa is stolen by Vincent Peruggia. Exactly what happens in the two years before its recovery is a mystery. Many replicas of the Mona Lisa exist, and more than one historian has wondered if the painting now returned to the Louvre is a fake, switched in 1911. Present day: Art professor Luke Perrone digs for the truth behind his most famous ancestor: Peruggia. His search attracts an Interpol detective with something to prove and an unfamiliar but curiously helpful woman. Soon, Luke tumbles deep into the world of art and forgery, a land of obsession and danger.