While on vacation at a resort hotel in the West Indies, Miss Marple correctly suspects that the apparently natural death of a retired British major is actually the work of a murderer planning yet another killing.

一位新婚燕尔的年轻女子突然被人杀害了。究竟谁是凶手？是她的丈夫，还是她昔日的情人、仇人抑或情敌？一对喜欢侦探的青年决心将此事查个水落石出。他们私访知情者，调查当事人，几经曲折，数历危难，克服了有人故意设置的层层障碍，躲过了杀人者的冷枪暗箭，终于使事实真相大白与天下……

A letter for Miss Marple from a recently deceased friend promises a large reward for investigating a crime - without telling her who was involved, or when it happened! When she accepts, she is given a reservation for a coach tour of historic homes and gardens. She has fifteen fellow-passengers - and one of them knows a murderer's secret and someone is preparing to kill.

Marple is invited to London to see her old friend Ruth. Miss Marple was a sort of traveling companion to Ruth and her sister, Carrie Louise. Ruth is worried about Carrie Louise. She doesn't know why, though. Ruth asks Miss Marple to come with her to her sister's estate, Stonygates. Stonygates is a huge manor house, and some of the buildings and the grounds are used by Carrie Lo...

　　玛丽拉（克莱尔·布鲁姆 Claire Bloom 饰）是一位过气已久的影星，为了复出，她在圣玛丽米德最好的别墅中举办了盛大的宴会，邀请了各方宾客，以及自己曾经的影迷们，就在酒会的气氛被烘托到最高超的时候，站在玛丽身边的一位女士突然口吐白沫，一命呜呼。　　很快，警方就开始了针对案件的调查，死去的女士生前是玛丽拉的忠实影迷，而她所喝的最后一杯酒，原本是要给玛丽拉的！这也就意味着，或许这位女士成为了玛丽拉的替死鬼。警方将怀疑的目标最终锁定到了玛丽拉的丈夫的身上，这让玛丽拉感到非常的崩溃。入夜，一声枪响划破了夜幕的宁静，又一宗谋杀案发生了。