Hallowe'en Party.

At a Hallowe'en party held at Rowena Drake's home in Woodleigh Common, thirteen-year-old Joyce Reynolds tells everyone attending she had once seen a murder, but had not realised it was one until later. When the party ends, Joyce is found dead, having been drowned in an apple-bobbing tub. Ariadne Oliver, attending the party while visiting her friend Judith Butler, calls on Hercule Poirot to investigate the murder and Joyce's claim. Christie dedicated the novel, "To P. G. Wodehouse — whose books and stories have brightened my life for many years. Also, to show my pleasure in his having been kind enough to tell me he enjoyed my books."