女出租车司机帕蒂遇到了一个奇怪的乘客，他头被打破了还忘记了自己的身份。正当帕蒂想帮他找回记忆的时候，却突然发现他可能是一宗谋杀案的凶手，然而事情并没有想象中那么简单。。。...

　　A man (Young) comes round after a car accident, and realises that a perfect crime is now possible: any movie with this scene can't fail. From this halfway point, the anxious mood of this rare no...