When a staged charity murder game at a Devon estate unexpectedly turns into a genuine crime, Hercule Poirot must intervene to uncover the truth. Ariadne Oliver, a celebrated crime novelist, orchestrates a elaborate murder hunt for a village fete but quickly realizes the atmosphere is fraught with hidden malice. Sensing an impending disaster, she summons her friend Hercule Poirot to navigate the complex social dynamics and deceptive appearances of the guests. The narrative follows Poirot as he applies his methodical logic to a web of secrets, where every participant harbors a motive and the line between performance and reality dissolves.

This work is widely regarded as a quintessential example of the late-career style of Agatha Christie, showcasing her mastery of the locked-room and country-house subgenres. Readers often note the clever inclusion of Ariadne Oliver as a surrogate for the author herself, which adds a layer of self-reflexive commentary to the mystery. The pacing is frequently praised for its deliberate build-up, allowing the reader to engage with the intricate puzzle alongside Poirot. While some critics argue it lacks the explosive tension of her earlier works, the consensus remains that the character dynamics and the clever subversion of the 'murder game' trope provide a satisfying experience for fans of traditional detective fiction.