The saga of the Borgias and the lives of Leonardo da Vinci and the young Machiavelli form the accurate historical background of this murder mystery, set in the opulence of Renaissance Rome and Milan. Machiavelli's illegitimate daughter and his bewitching ex-mistress will solve three murders with help from da Vinci and Lucrezia Borgia--including the murder of Lucrezia's real-life half sister.