A seemingly natural death at a dinner party sets off a complex investigation when Hercule Poirot suspects a calculated murder. As the guests gather at the home of Sir Charles Cartwright, a retired actor, a clergyman suddenly collapses and dies. While the local authorities dismiss the event as a tragic accident, Poirot perceives a pattern of hidden motives and precise timing. He must navigate the social circles of the British elite to uncover the truth, facing a killer who uses theatricality as a shield for their lethal intentions. The narrative follows a traditional third-person perspective, emphasizing the methodical gathering of clues and the psychological dissection of the suspects.

This work is frequently cited for its clever subversion of traditional mystery tropes through its focus on the art of performance. Readers often highlight the interplay between Sir Charles Cartwright and Poirot as a central strength of the narrative structure. The pacing is noted for its deliberate, methodical progression, which allows the reader to engage with the clues alongside the detective. While some critics point to the theatrical premise as a unique stylistic choice, the consensus remains that it stands as a quintessential example of Christie's mastery of the puzzle-based mystery.