In the late autumn of 666 A.D., Fidelma of Cashel - an advocate of the Brehon Courts, sister to the King of Cashel, and religieuse of the Celtic Church is at a crossroads. Needing to reflect upon her commitment to the religious life and her relationship to the Saxon monk Eadulf, she leaves Eadulf behind and joins a small band sailing from Ireland on a pilgrimage to the Shrine of St. James in modern-day Spain. Her first surprise on-board is the appearance...