南加利福尼亚，高中生布伦丹·弗莱（约瑟夫·戈登-李维特 Joseph Gordon-Levitt 饰）接到前女友艾米丽•考斯特奇（艾米丽·Emilie de Ravin 饰）的电话，分手两个月来她过得并不好，似乎正在面临巨大的磨难。在接下来的两天里，布伦丹四处寻找艾米丽，最终看到的却是她的尸体。为了弄清艾米丽死亡背后的真相，布伦丹执着地展开调查。他寻找任何可能与艾米丽有关的人与事，从而卷入巨大的黑...
A rich brother and sister are crazed killers. She lures men into her bed, and he attacks them and murders them. A detective is assigned to find the killers and bring them in....