It’s 1502. Women are being murdered in the Romagna, and their deaths may hold the secret to a mystery that has plagued Pope Alexander VI: the brutal murder of his beloved son Juan, Duke of Gandia. Eager for revenge, he sends an agent north to find out more. The former courtesan Damiata arrives in the town of Imola, the headquarters of the Pope’s second son Cesare, with a powerful motivation to succeed: her infant son is being kept as a hostage at the Borgia court. Yet she isn’t the only one seeking the truth about these murders. Two others are also trying to identify the killer: one is the put-upon Florentine envoy, Niccolò Machiavelli; the other is Cesare’s engineer-general, the Tuscan polymath Leonardo da Vinci.