Rosamund Clifford, the mistress of King Henry II, has died an agonizing death by poison - and the king's estranged queen, Eleanor of Aquitaine, is the prime suspect. Henry suspects that Rosamund's murder is probably the first move in Eleanor's long-simmering plot to overthrow him. If Eleanor is guilty, the result could be civil war. The king must once again summon Adelia Aguilar, mistress of the art of death, to uncover the truth. Adelia is not happy to be called out of retirement. She has been living contentedly in the countryside, caring for her infant daughter, Allie. But Henry's summons cannot be ignored, and Adelia must again join forces with the king's trusted fixer, Rowley Picot, the Bishop of St. Albans, who is also her baby's father.