CSI: Crime Scene Investigation (season 5) CSI: Crime Scene Investigation (season 5) The fifth season of "" premiered on CBS on September 23, 2004 and ended May 19, 2005. The series stars William Petersen and Marg Helgenberger. Greg begins his journey from a lab rat to a field mouse, as the Las Vegas Crime Lab faces a personnel overhaul ("Ch-Ch-Changes"), during the fifth season of "CSI". The team's final days together are plagued with more investigations into the insane and the unusual, including the discovery of an "alien" corpse just outside the boundary of Area 51 ("Viva Las Vegas"), a body washed up in a thunderstorm
CSI: NY CSI: NY CSI: NY (Crime Scene Investigation: New York, stylized as CSI: NY/) is an American police procedural television series that ran on CBS from September 22, 2004, to February 22, 2013, for a total of nine seasons and 197 original episodes. The show follows the investigations of a team of NYPD forensic scientists and police officers identified as "Crime Scene Investigators" (instead of the actual title of "Crime Scene Unit Forensic Technicians" (CSU)) as they unveil the circumstances behind mysterious and unusual deaths, as well as other crimes. The series is an indirect spin-off from the veteran series ""