When Meriet, a quiet, secretive young man is brought to the Abbey of St.Peter and St.Paul by his father, to be accepted as a novice monk, Brother Cadfael is immediately wary of his true vocation as he is almost too keen to take vows and to renounce the outside world at an age where he has had no experience of life, except as a youth in a privileged world of the minor nobility. He disturbs all the residents of the Abbey with his screaming nightmares so is taken to serve under the guidance of Brother Mark, at the Leprosarium of St. Giles. While helping the patients gather firewood in the nearby forest, he discovers the burned body of a murdered cleric who had recently been an overnight guest at his father's manor, and who had been declared missing for a short time. Meriet's father has never had any time for him as his elder brother Nigel was the apple of his parent's eyes and could do no wrong. The mystery evolves with Cadfael, as usual, methodically sifting through red herrings and true clues, with the help of his friend, Deputy Sherriff, Hugh Beringar. It's another fine Cadfael story, linked very closely with the political history and unrest of the day.