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: Crime Scene Investigation (season 10) Jorja Fox recurs. <onlyinclude></onlyinclude> CSI: Crime Scene Investigation (season 10) The tenth season of "" premiered on CBS on September 24, 2009, and ended May 20, 2010. The series stars Marg Helgenberger and Laurence Fishburne. Riley Adams leaves the CSI team in turmoil, as Catherine's leadership skills are called into question ("Family Affair"), during the 10th season of "CSI". The team, including the newly returned Sara Sidle, continue to investigate the gruesome, the premeditated, and the unusual, including the death of a porn producer ("Ghost Town"), a botched robbery ("Working Stiffs"), a cop-on-cop homicide ("Coup de Grace"), the murder of