When a brutal landowner is found dead while hunting for a runaway serf, Brother Cadfael must untangle a web of conflicting loyalties in the shadow of the English civil war. Amidst the political instability of 1142, the young heir Richard Ludel finds his estate transformed by the arrival of a mysterious hermit, whose presence complicates the local social order. Brother Cadfael, the observant monk and former crusader, navigates the tension between the landed gentry and the desperate peasantry to uncover the truth behind the murder. The narrative unfolds through a third-person perspective that balances the macro-level conflict of the Anarchy with the intimate, localized mystery of the Shrewsbury manor.

This work is widely regarded as a quintessential entry in the long-running series, praised for its seamless blend of historical accuracy and traditional mystery tropes. Readers often note the author's ability to ground complex political maneuvers within the quiet, contemplative life of a medieval monk. The narrative is frequently cited for its rich sense of place and the nuanced portrayal of characters caught between feudal duty and personal conscience. Critics and fans alike appreciate the consistent tone and the meticulous attention to the social customs of the 12th century.