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 3) CSI: Crime Scene Investigation (season 3) The third season of "" premiered on CBS on September 26, 2002 and ended May 15, 2003. The series stars William Petersen and Marg Helgenberger. Grissom begins to suffer from hearing loss ("Inside the Box"), as Catherine faces the possibility of losing her daughter ("Lady Heather's Box") during the third season of "CSI". Alongside their team, including Sara Sidle, Warrick Brown, Nick Stokes, and Jim Brass, Willows and Grissom investigate the death of a poker player ("Revenge is Best Served Cold"), the evisceration of a cheerleader ("Let the Seller Beware"), a death at a