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 explicitness of graphic violence, images, and sexual content. The "CSI" series and its spin-off shows have been accused of pushing the boundary of what is considered acceptable viewing for primetime network television. The series had numerous episodes on sexual fetishism and other forms of sexual pleasure (notably the recurring character of Lady Heather, a professional dominatrix). "CSI" was ranked among the worst primetime shows by the Parents Television Council from its second through sixth seasons, being ranked the worst show for family prime-time viewing after the 2002–2003 and 2005–2006 seasons. The PTC also targeted certain "CSI" episodes for its weekly