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: The Experience "CSI: The Experience", visitors use the scientific information they gathered to answer a series of multiple-choice questions on touch screens. After completing the survey, visitors proceed to a recreation of Gil Grissom's office to present their case. Exhibit-goers can compare their scientific findings to those of expert crime scene investigators. The exhibit is geared toward adults and youth ages 12 and above. "CSI: The Experience" opened with a press preview on May 23, 2007 at the Museum of Science and Industry which was attended by stars from the cast of "CSI: Crime Scene Investigation", including William Petersen, Marg Helgenberger, Gary