Renaissance Florence at the zenith of its artistic splendor is the backdrop for this historically sequel to A Borgia Daughter Dies. Leonardo da Vinci uncovers a serial killer while working for the infamous Niccolo Machiavelli on a secret project for the Florentine Republic. A feared figure from Leonardo's past also seeks his help, forcing him to re-live the nightmare of his public arrest after he was anonymously accused of homosexuality as a young man. Machiavelli's mistress Caterina and their daughter Nicola will help Leonardo while trying to protect Caterina's father, who lives in fear of death threats thrust under his door in the night. Are these events intertwined? Leonardo will find answers, while he strives towards his greatest artistic and scientific achievements, in company with some of the most famous artists in history."