凯亨（法利·格兰杰）恨自己不守妇道的妻子，意图谋害；布鲁罗（罗伯特·沃特）想杀死自己的父亲。一次他们在火车上偶遇，两人互诉衷肠，协议互换杀人。布鲁罗轻松的杀掉了凯亨的妻子，凯亨却难以下手。布鲁罗以嫁祸凯亨相要挟，转瞬间凯亨从杀人走向了为自己洗脱罪责而奔命。 火车上的怪客，改变了凯亨的命运，也让他卷进了危险的漩涡。

英俊帅气、年轻有为的泰德•格雷（Milo Ventimiglia 米洛•文堤米利亚 饰）事业爱情双得意，他以优异的成绩从哈佛医学院毕业，随后被推荐进入全国最有名的病理学研究小组；另一方面，泰德和女友格雯（Alyssa Milano 阿莱萨•米兰诺 饰）感情顺利，令人欣羡。凭借出众的才干与丰富的学识，泰德很快便在这人才辈出的研究小组中崭露头角，受到同侪的赏识与器重。但他很快便发现，这个小组的工作人员似乎隐藏着不为人知的秘密。原来，这些衣冠楚楚研究人员竟然暗中进行一连串的杀人事件，他们为了创造出完美的杀人纪录而疯狂竞赛。泰德同时发现，自己也在其中越陷越深。是逃脱，还是同流合污，他面临着痛苦而危险的选择……

After Haley goes missing, Michelle must work quickly to find her daughter and discover the truth behind the mysterious deaths before Haley or anyone else gets hurt.

Australian television adaptation of the Patrick Hamilton play.

A popular crime novelist's wife is murdered and he is been interrogated by the Crime Branch special investigation officer. The interrogation leads to various suspects who could have possibly killed the novelist's wife. But, to the interrogation officer there is more to what meets the eye, until the audience gets to know who done it.