The year is 1142, and all England is in the iron grip of a civil war. And within the sheltered cloisters of the Benedictine Abbey of Saint Peter and Saint Paul, there begins a chain of events no less momentous than the political upheavals of the outside world. First, there is the sad demise of Richard Ludel, Lord of Eyton, whose ten-year-old son and heir, also named Richard, is a pupil at the Abbey. Supported by Abbot Radulfus, the boy refuses to surrender his new powers to Dionysia, his furious, formidable grandmother. A stranger to the region is the hermit Cuthred, who enjoys the protection of Lady Dionysia, and whose young companion, Hyacinth, befriends Richard. Despite his reputation for holiness, Cuthred's arrival heralds a series of mishaps for the monks. When Richard disappears and a corpse is found in Eyton forest, Brother Cadfael is once more forced to leave the tranquillity of his herb garden and devote his knowledge of human nature to tracking down a ruthless murderer.