CSI: Crime Scene Investigation (season 7) CSI: Crime Scene Investigation (season 7) The seventh season of "" premiered on CBS on September 21, 2006 and ended May 17, 2007. The series stars William Petersen and Marg Helgenberger. Catherine heads to a small town in Nevada ("Leaving Las Vegas") as Grissom and Sara continue their affair ("Living Doll"), in the seventh season of "CSI". Supervised by Grissom and Willows, the Las Vegas Crime Scene Investigators face both personal and professional challenges as Grissom says goodbye, and new CSI Michael Keppler joins the team ("Sweet Jane"), as they investigate the bizarre, the brutal, and the unprecedented, including a
CSI: Crime Scene Investigation (season 6) CSI: Crime Scene Investigation (season 6) The sixth season of "" premiered on CBS on September 22, 2005 and ended May 18, 2006. The series stars William Petersen and Marg Helgenberger. Brass, now partnered with Sofia Curtis, finds himself caught in a shootout that leaves one officer dead, and a Latino community enraged ("A Bullet Runs Through It"), before finding himself critically injured in a hostage standoff ("Bang-Bang"), in the sixth season of "CSI". Meanwhile, Grissom and Willows reunite in order to investigate their toughest cases yet, including the death of a movie star ("Room Service"), a corpse discovered at