The narrative follows Lord Peter Wimsey, who is unexpectedly tasked with caring for his young nephew, Viscount St. George, during an outbreak of measles at a local school. While visiting a bookshop, the boy discovers an old book, Münster's *Cosmographia Universalis*, which they purchase. Shortly after, a man named Wilberforce Pope approaches them, expressing a sentimental interest in the book, claiming it belonged to his late uncle, Dr. Conyers. He offers to buy it back for double the price, raising suspicions in Lord Peter. As the story unfolds, it becomes clear that Pope's interest is not purely sentimental. After a series of events, including a burglary attempt at Lord Peter's home, it is revealed that Pope is after a hidden treasure linked to the book. The treasure is rumored to be buried by an ancestor of Dr. Conyers, known as "Old Cutthroat," who left behind cryptic clues in the book. Lord Peter and Gherkins, intrigued by the mystery, visit Dr. Conyers at Yelsall Manor. They learn about the family's history and the treasure's connection to the *Cosmographia*. The old doctor, desperate to fund his cancer research, is eager to find the treasure. Together, they decipher clues from the book, leading them to believe the treasure is hidden in a lake on the estate, shaped like the Canary Islands. In a late-night adventure, Lord Peter and Gherkins row out to the lake, where they activate a hidden mechanism in a dragon-shaped fountain, revealing a treasure chest. As they celebrate their discovery, they encounter Pope, who has been lurking nearby, revealing his true intentions. The story culminates in a confrontation that exposes Pope's deceit and highlights the bond between Lord Peter and his nephew, as they navigate the complexities of treasure hunting, family legacy, and the pursuit of knowledge. The narrative blends elements of mystery, adventure, and humor, showcasing the charm of book collecting and the thrill of uncovering hidden histories.
By Dorothy L Sayers · First published 1939 · Genre: Mystery, Adventure, Detective Fiction