The thrilling fourth instalment of the Mistress of the Art of Death series.
In 1176, King Henry II sends his ten-year-old daughter, Joanna, to Palermo to marry William II of Sicily. War on the Continent and outbreaks of plague make it an especially dangerous journey, so the king selects as his daughter's companion the woman he trusts most: Adelia Aguilar, his mistress of the art of death.
As a medical doctor and native of Sicily, Adelia is to travel with the princess and safeguard her health until the wedding. Accompanying her on the journey are her Arab companion, Mansur, her lover, Rowley, and an unusual newcomer: the Irish sea captain O'Donnell. But another man has joined the procession— a murderer bent on the worst kind of revenge. When people in the princess's household begin to die, Adelia and Rowley suspect that the killer is hiding in plain sight. Is his intended victim the princess ... or Adelia herself?