海伦·海丝

Major Palgrave, an idiosyncratic but charming mystery writer, reveals to Miss Marple that one of the guests at a luxurious Caribbean resort they're staying at is a Bluebeard-type wife murderer. Unfortunately, the Major succumbs to an apparently accidental overdose of alcohol and blood pressure medication before revealing the killer's identity. When it's discovered that the medicine belonged to another guest and the revealing photograph the Major was carrying is missing, Miss Marple realizes that the serial killer has struck again and more murders will follow.

贝克斯菲尔德（伯特·兰卡斯特 Burt Lancaster 饰）是林肯机场的总经理，繁忙的工作让他总是将家庭摆在人生的次要位置，导致备受冷落的妻子辛迪（达娜·温特 Dana Wynter 饰）最终选择了离开。　　就在贝克斯菲尔德的婚姻遭遇了破坏性的打击的同时，他的事业也发生了前所未有的危机，一架飞机抛锚在了跑道上，阻碍了其他飞机起飞，更糟的是，另一架飞机上，一名恐怖分子引爆了炸弹，导致飞机严重受损，必须使用跑到着陆，否则就会机毁人亡。在飞机专家帕特洛尼（乔治·肯尼迪 George Kennedy 饰）的帮助下，贝克斯菲尔德凭借着惊人的胆识和智慧最终顺利化解危机，不仅如此，他还和女助手开启了一段罗曼史。

Marple is asked by her lawyer, Christian Gilbranson, to visit his step-mother, Carrie Louise Serrocold, an old friend of Miss Marple's, at her country estate. Carrie's husband, Lewis, confides to Miss Marple that he suspects someone is slowly poisoning his wife, and when Gilbranson visits the mansion, he is mysteriously murdered.

A mathematician and author, Luke Williams, is travelling up to London on a train when he meets a old lady, Lavinia Fullerton, who is also going to London, to Scotland Yard. Lavinia tells Luke that in her small village several people have died. The local police are certain that it was all accidental and are taking no action but Lavinia isn't convinced. In London Luke watches, horrified, as Lavinia is run over in a hit and run and he becomes convinced that she was telling the truth. He travels down to the village and with the aid of a local girl, who is also convinced that the deaths were murder, sets out to solve the mystery.