Paris, 22 August 1911. You’re the curator of the Louvre. Imagine your reaction when you come into work only to find the Mona Lisa has been stolen overnight... The museum’s head of security and almost sixty of Paris’ best detectives are already on scene, but the investigation has stalled. Apollinaire is a suspected accomplice, Picasso is questioned a number of times... even D’Annunzio is asked to confirm his whereabouts, but nothing. Not a clue. Extraordinary rewards are offered. Still nothing. Finally, in 1913, the truth comes out: Vincenzo Peruggia, an Italian museum worker, was caught trying to sell the painting on to an antiques dealer in Florence. It wasn’t until 1914 that the Mona Lisa was brought home to the Louvre, and is now subject to ever-so slightly increased security.