Auzou Book for the last enigma of Leonardo da Vinci

MilanRenaissance: Cecilia Gallerani, mistress of the Duke of Milan, is threatened with death by the Duke's wife, who demands the portrait by Leonardo da Vinci, La dame à l'hermine. Nowadays: Leonardo, a teenager, receives an e-mail telling him to look for the painting. The message comes from his grandfather, who is buried the same day. Leonardo decides to travel to Krakow, where the painting is on display. An exciting but perilous investigation...