CSI: Crime Scene Investigation (season 7) CSI: Crime Scene Investigation (season 7) The seventh season of "" premiered on CBS on September 21, 2006 and ended May 17, 2007. The series stars William Petersen and Marg Helgenberger. Catherine heads to a small town in Nevada ("Leaving Las Vegas") as Grissom and Sara continue their affair ("Living Doll"), in the seventh season of "CSI". Supervised by Grissom and Willows, the Las Vegas Crime Scene Investigators face both personal and professional challenges as Grissom says goodbye, and new CSI Michael Keppler joins the team ("Sweet Jane"), as they investigate the bizarre, the brutal, and the unprecedented, including a
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