"How much blood and horror lies at the root of all good things!" Friedrich Nietzsche. This richly illustrated book tells the story of one of the most famous paintings of the Italian Renaissance, the "Flagellation" by Piero della Francesca. The author demonstrates that the painting contains an encoded murder accusation, a reference to the murder of Oddantonio da Montefeltro, the first Duke of Urbino. He embarks on a quest to uncover the perpetrator and the patron of Piero's masterpiece. This book seeks to decipher the mysterious history of the famous Renaissance painting, the "Flagellation" by Piero della Francesca. Based on previously overlooked sources, the author shows that the painting contains an artfully concealed murder accusation: allusions to an assassination that claimed the life of the young Duke of Urbino, Oddantonio da Montefeltro, in July 1444.