Crispin Guest is summoned to a London priory to unmask a merciless killer. Can he discover who is committing the deadliest of sins?
1399, London. A drink at the Boar´s Tusk takes an unexpected turn for Crispin Guest, Tracker of London, and his apprentice, Jack Tucker, when a messenger claims the prioress at St Frideswide wants to hire him to investigate murders at the priory. Two of Prioress Drueta´s nuns have been killed in a way that signifies two of the Seven Deadly Sins, and she´s at her wits end.
Meanwhile, trouble is brewing outside of London when the exiled Henry Bolingbroke, the new Duke of Lancaster, returns to England´s shores with an army to take back his inheritance. Crispin is caught between solving the crimes at St Frideswide´s Priory, and making a choice once more whether to stand with King Richard or commit treason again.