In this novel, a wealthy woman is found poisoned in her country home in England during World War I. A family friend who is visiting the house at the time of the murder calls upon his friend, a brilliant detective, to help solve the case. The detective uses his unique methods to investigate the crime, revealing a complex web of family secrets and betrayal. Throughout the investigation, the detective uncovers that the victim's husband, the housekeeper, and the victim's stepsons all had motives to kill her. The detective eventually solves the crime, revealing the unexpected murderer and their ingenious method of committing the crime.

The 989th greatest book of all time