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 continues to own UK DVD rights). The series is currently in syndication, and reruns are broadcast in the U.S. on Oxygen, Syfy and the USA Network on cable, with Ion Television holding the broadcast syndication rights. The show has aired in reruns on the USA Network since January 14, 2011. The CSI catalog has been exclusive to the whole NBC Universal portfolio since September 2014, after several years with Viacom Media Networks' Spike and TV Land. "CSI" was shot at Rye Canyon, a corporate campus owned by Lockheed Martin situated in the Valencia area of Santa Clarita, California, but after