When a widow arrives at 221B Baker Street clutching a centuries-old map and a tale of her husband’s mysterious death, Sherlock Holmes dismisses it as a "pedestrian treasure hunt." But the case of Edwin Fentiman-an antiquarian bookseller who fell to his death while researching the infamous highwayman Dick Turpin-proves to be anything but ordinary.
The map leads Holmes and Watson into the labyrinthine alleyways of medieval York, where cryptic clues point toward a fortune hidden since 1739. But they are not alone in their pursuit. A gang of Manchester cutthroats, a desperate antiquities dealer, and members of York’s prestigious Historical Society all seek the same prize-and they will kill to claim it.
From the stone stairs of York Minster to the ancient keep of Clifford’s Tower, from kidnapping in narrow alleyways to confrontation in a Historical Society vault, The Adventure of Turpin’s Testament delivers classic Holmes detection. More than a treasure hunt, it is a meditation on the value of truth and the price of silence.