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 occasion, been accompanied by Electric Light Orchestra's "Mr. Blue Sky". This song was first used in the season-seven episode "Lab Rats", and last used during season 10's "Field Mice". From "CSI", CBS produced a franchise starting in 2002 with a spin-off entitled "". Set in Miami, Florida, and starring David Caruso and Emily Procter, "Miami" later launched "" in 2004. Starring Gary Sinise, Sela Ward, and Melina Kanakaredes, "NY" was set in New York City and was based upon the idea that "Everything is Connected". In 2015, a fourth "CSI" series, entitled "", starring Patricia Arquette and Ted Danson, was