Whitney Cameronn (Cotten), a man with a strong affection for his sister-in-law (Peters). When one of her stepchildren dies, it's revealed that the child was poisoned to death. Whitney suspects his sister-in-law committed the murder and is afraid that her other son may be in danger. The film climaxes during an ocean voyage aboard a cruise ship.
演员：凯瑞·克劳利 布里德·布伦南 Eva-Jane Gaffney 肖恩·T·O·米尔莱 Marcus Lamb 阿特·帕金森 Naseen Morgan Niall Mac Eachmharcaigh Brid Ní Chumhaill Christopher Grant Eoghan Mac Giolla Bhrighde