When news comes to Cashel that Chief Bishop and advisor to King Colgú of Muman has been murdered within the fortress of the Uí Fidgente, it is a shock for all concerned. The Uí Fidgente are the long-time enemies of King Colgú's family, and terrible conflict is threatened when the King learns that the culprit will be executed under new ecclesiastical rules.
As Colgú dispatches his sister Fidelma and her companion, Eadulf, to investigate, it seems there there is no uncertainty about the person who killed the abbot. But the man facing death is Gormán, commander of the King's élite bodyguard and son of Fidelma's closest friend.
Now Fidelma and Eadulf must face old enemies as they struggle to find an alternative to the apparent fact of Gormán's guilt. And with the threat of war looming, time is running out to the allotted moment of Gormán's execution...