Whitney Cameronn (Cotten), a man with a strong affection for @www 7xoy com@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@未婚女子@ afraid that her other son may be in danger. The film climaxes during an ocean voyage aboard a cruise ship.