In A.D. 670 Fidelma of Cashel is asked to act as an advisor to the Irish delegation to a hostile church council. In an abbey in Burgundy, Bishop Leodegar of Autun has assembled church leaders from all over western Europe, intending to use the council to deliver a death blow to the Celtic Church. But his plans are threatened when one of the delgates is found murdered, his skull crushed.
Fidelma and her husband, Brother Eadulf, are suddenly in the midst of a murder investigation involving some of the most powerful religious leaders. The duo soon find that between the autocratic Bishop...