Russell and Finlay must confront a serial killer case from their past while working in Seattle when a copycat killer suddenly emerges in Las Vegas.

　　Under the direction of new boss D.B. Russell, the team tackles cases involving a wild shootout on a Las Vegas tram car, and the death of a deer hunt

　　CSI的故事背景设在赌城拉斯维加斯，以真人真事改编，讲述刑事警察局的法庭犯罪调查员如何在作案现场取得证据破案的故事。调查员的名言是“死尸会说话”，他们利用指纹、鞋印、子弹壳、血迹、毛发、纤维、尸体伤痕等微小证据，经过仔细的分析研究后，寻得破案的关键。 解开谜团的过程颇有吸引力。

　　While Ecklie fights for his life after his shooting, Russell's patience begins to wear thin as the team tries to get to his kidnapped granddaughter

　　四位园艺俱乐部会员的生活被丑闻、恶作剧和一个共同的秘密交织在一起——一桩无人愿意提起的谋杀案。

　　A group of aliens has come to Earth to learn about its population, customs, etc. To avoid detection, they have taken on human form which gives them

We're transported back to the tropical island of Saint Marie, and this time with a new Detective Inspector in place - but will DI Mervin Wilson remain

一对已婚夫妇的旅行遭遇了令人不安的转折，妻子失踪后，丈夫疯狂寻找，但一个神秘反派为他创造了连连不断的障碍。