CSI: Crime Scene Investigation (season 4) CSI: Crime Scene Investigation (season 4) The fourth season of "" premiered on CBS on September 25, 2003 and ended May 20, 2004. The series stars William Petersen and Marg Helgenberger. Nick accidentally leaks information to a news reporter ("Assume Nothing"), and Catherine tries to discover how a body ended up in a bathtub ("All for Our Country") during the fourth season of "CSI". Supervised by Grissom and Willows, the Las Vegas CSIs are tasked with investigating the bizarre, the unlikely, and the unprecedented, including a disappearing gun ("Homebodies"), the death of a baby during a heatwave ("Feeling the Heat"),
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