CSI: Crime Scene Investigation physical evidence to solve murders. The team is originally led by Gil Grissom (Petersen), a socially awkward forensic entomologist and career criminalist who is promoted to CSI supervisor following the death of a trainee investigator. Grissom's second-in-command, Catherine Willows (Marg Helgenberger), is a single mother with a cop's instinct. Born and raised in Las Vegas, Catherine was a stripper before being recruited into law enforcement and training as a blood-spatter specialist. Following Grissom's departure during the ninth season of the series, Catherine is promoted to supervisor. After overseeing the training of new investigator Raymond Langston (Fishburne), Willows is replaced by
CSI: Crime Scene Investigation created. It focuses on the FBI's elite Cyber Crime Division. The "CSI" series exists within the same fictional "universe" as fellow CBS police dramas "Without a Trace" and "Cold Case". A number of comic books, video games, and novels based on the series have been made. In 2006, the Fort Worth Museum of Science and History developed a traveling museum exhibit called "CSI: The Experience". On May 25, 2007, Chicago's Museum of Science and Industry was the first museum to host the exhibit, and the exhibit's opening featured stars from the TV series. Also a supporting website designed for the