On August 21, 1911, Leonardo da Vinci’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.  The sensational disappearing act captured the world’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.