Poirot attends a party at the great actor Sir Charles Cartwright's Cornish mansion. A local reverend dies while drinking a cocktail, but no poison is found in his glass. Poirot and Cartwright decide to investigate when another victim is claimed in the same manner.
During a village's Hallowe'en party, a young girl boasts of having witnessed a murder from years before. No one believes her tale until her body is found later on in the evening, drowned in the apple-bobbing bucket.
Four clocks surround an unidentified corpse in a blind woman's house, and a young typist is summoned to the crime scene. However, Poirot is convinced that the complicated setup is merely hiding a simpler solution.