Marple is visiting an old school friend, Lady Camilla Tressilian, along with an eclectic group: Neville Strange and his wife Kay, his former wife Audrey and her childhood friend and cousin Thomas Royde, Ted Latimer and finally Freddie Treves, a retired solicitor. When Treves is found dead the day after a dinner party at Lady Tressilian's home and Lady Tressilian herself is found bludgeoned to death a short time later, Miss Marple must sort through the complex set of relationships among all the players, and determine what role the tale of a child's crime may have had to play in the deaths.

该剧讲述能看到死之前的瞬间的预言家，和重案组刑警，被卷入可疑的连锁杀人案之后，揭开隐藏的秘密的故事。