1324: The English kingdom is in uproar. Roger Mortimer, once the King's most able commander, but now his most hated enemy, is plotting to assassinate the King. But he's not the only one with murder on his mind... When the bodies of a local craftsman and the King's messenger are found in the city of Exeter's streets, Sir Baldwin de Furnshill, the Keeper of the King's Peace and his friend Bailiff Simon Puttock, are implored by the Bishop to find out who was responsible. The dead messenger was carrying a dangerous secret that may prove fatal, should it fall into the wrong hands. Baldwin and Simon must find the murderer before he can strike again. But when murderers can use magic, no one is safe...