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
Pilot (CSI: Crime Scene Investigation) mold of his own hand. Grissom realizes that the suspect used one of these hands. Nick Stokes arrives at his crime scene and meets a man who was drugged by a hooker and had his possessions stolen while he was unconscious. Nick notices a discoloration around the man's mouth that he thereafter ties up with another caseload, Kristy Hopkins, who accidentally crashes her car when she got knocked unconscious while driving. He notices the same discoloration around her nipples and realizes that she put scopolamine on her nipples to knock out her victims and steal their possessions. Catherine and Warrick