Determined to avenge the killing of her father, Francesca Giordano defies all convention to claim for herself the position of poisoner serving Cardinal Rodrigo Borgia, head of the most notorious and dangerous family in Italy.
Borgia court poisoner Francesca Giordano must battle the demons of her own dark nature to unravel a plot to destroy the Borgias, seize control of Christendom, and plunge the world into eternal darkness.