汤姆（阿兰·德龙 Alain Delon 饰）是一个穷小子，最近，一桩好差事找上了门，好友菲利普（莫里斯·荣内特 Maurice Ronet 饰）的富豪父亲找到了汤姆，希望他能够替自己找回成日在外风流潇洒的儿子，作为回报，汤姆将得到价值不菲的报酬。 　　循着菲利普的踪迹，汤姆来到了拿布里，见到了菲利普和他的未婚妻玛奇（玛丽·拉福莱 Marie Laforêt 饰）。菲利普纸醉金迷的生活让汤姆十分羡慕，玛奇的美丽和温柔更是摄取了汤姆的心魄，一个邪恶的念头应运而生。一次出游中，汤姆设计杀死了菲利普，之后，为了掩盖罪行，汤姆又杀死了菲利普的好友。一个谎言，要用无数个谎言来掩盖，在得到了自己想要的一切后，汤姆终将面临审判。Tom Ripley is sent to Europe by Mr. Greenleaf to fetch his spoiled, playboy son, Philippe, and bring him back home to the States. In return, Tom will receive $5,000. Philippe toys with Tom, pretending he will go back home, but has no intentions of leaving his bride to be, Marge, and honoring his father's wishes. After some time passes, Mr. Greenleaf considers the mission a failure and cuts Tom off. Tom, in desperation, kills Philippe, assumes his identity, and lives the life of a rich playboy. However, he will need all his conman abilities to keep Philippe's friends and the police off the trail.