'Painting Mona Lisa' offers an explanation behind the mysteries surrounding da Vinci's famous portrait – why did Leonardo keep the 'Mona Lisa' with him until his death? It is April 26, 1478. Lorenzo De Medici, the head of the powerful Florentine Medici family is attacked. He survives, but his younger brother, Giuliano, dies beneath multiple dagger blows. Ten years later, a young Lisa Gherardini listens to her mother retell the story of Giuliano's death, sharing her mother's passion for the arts, and even attending some of the Medici gatherings. But, her father – a follower of the fanatical Dominican monk Fra Girolamo Savonarola – scorns the wicked paganism of the Medicis. Lisa becomes the lover of Lorenzo's son, Giuliano the younger, just as the French king arrives to banish the...