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 by Frame"). "CSI" spawned three spin-off series, a book series, several video games, and an exhibit at Chicago's Museum of Science and Industry. At the time of its cancellation, "CSI" was the seventh-longest running scripted U.S. primetime TV series overall and had been recognized as the most popular dramatic series internationally by the Festival de Télévision de Monte-Carlo, which awarded the series the International Television Audience Award (Best Television Drama Series) three times. "CSI" became the second-most watched show on American television by 2002, finally taking the top position for the 2002-2003 season. It was later named the most-watched show