Three act tragedy: While visiting the Cornish coast, Poirot attends a dinner where one of the guests suddenly dies. The clocks: A pretty secretary arrives at a residence for a temporary typing job, only to find a man's corpse on the floor. But why are there four strange clocks in the room? Hallowe'en party: A children's party turns into the murder of 13-year-old Joyce Reynolds, who had boasted of witnessing a murder a few years before.