刚刚搬到伦敦的托尼（詹姆斯·福克斯 James Fox 饰）雇佣了名为巴雷特（德克·博加德 Dirk Bogarde 饰）的男子作为家中的仆人，将家里上下大大小小的一切事物交给他打理，聪明肯干的巴雷特没有让托尼失望，很快便获得了主人的信任。 　　托尼的女友苏珊（温蒂·克雷格 Wendy Craig 饰）并不喜欢巴雷特，因为她隐约察觉到，托尼和巴雷特的妹妹薇拉（莎拉·米尔斯 Sarah Miles 饰）之间有着说不清道不明的暧昧关系。之后，托尼震惊的发现原来薇拉系巴雷特的情人，深感受到欺骗的托尼解雇了巴雷特。一次偶然中，托尼和巴雷特在一间小酒馆重逢了，他们重新建立了主仆关系，但这表面平和的关系里实则充满了刀光剑影。The aristocratic Tony moves to London and hires the servant Hugo Barrett for all services at home. Barrett seems to be a loyal and competent employee, but Tony's girlfriend Susan does not like him and asks Tony to send him away. When Barrett brings his sister Vera to work and live in the house, Tony has a brief hidden affair with her. After traveling with Susan and spending a couple of days in a friend's house outside London, the couple unexpectedly returns and finds Barrett and Vera, who are actually lovers, in Tony's room. They are fired and Susan breaks with Tony. Later, Tony meets Barrett alone in a pub and hires him back, and Barrett imposes his real dark intentions in the house, turning the table and switching position with his master.