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 Crispin 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. Will Crispin be caught between solving the crimes at St Frideswide's Priory and making the choice whether to stand with King Richard or commit treason once again?"An appropriate end to Westerson's series. Long-time fans will be eager to see if Crispin can triumph over the past, and anyone who enjoys medieval mysteries can follow it easily" Library Journal Starred Review"The wheel of life comes full circle for Crispin Guest in the last of his great adventures" Kirkus Reviews "Westerson wraps up the series' major loose ends in a manner sure to satisfy fans" Publishers Weekly.