Florence, New Year’s Day 1557. As dawn breaks, a painter is discovered lying on the floor of a church, stabbed through the heart. Above him, the paintings he laboured over for more than a decade. At his home,, a hidden painting scandalously depicting Maria de Medici, daughter of the Duke and Duchess of Florence, as a naked Venus. Who is the murderer? Who is behind the painting? As the city erupts in chaos,, Giorgio Vasari, the great art historian, is picked to lead the investigation.