On August 21, 1911, Leonardo da Vinciâ€™s most celebrated painting vanished from the Louvre. The prime suspects were as shocking as the crime: Pablo Picasso and Guillaume Apollinaire, young provocateurs of a new art. Â The sensational disappearing act captured the worldâ€™s imagination. Crowds stood in line to view the empty space on the museum wall. Thousands more waited, as concerned as if Mona Lisa were a missing person, for news of the lost painting. Almost a century later, questions still linger: Who really pinched Mona Lisa, and why? Part love story, part mystery, Vanished Smile reopens the puzzling case that transformed a Renaissance portrait into the most enduring icon of all time.