NCIS: Los Angeles

The first NCIS spin-off was announced in 2008 and was introduced via two-part back-door pilot episodes in season six of NCIS. Louise Lombard, who played Lara Macy in the pilot episodes, was not included in the main series. The cast of the first season featured Peter Cambor, Adam Jamal Craig, Linda Hunt and Barrett Foa. Cambor was demoted to recurring status, and Craig's character was killed off at the end of season 1, while Foa was written out at the end of season 12 and Hunt was demoted to "special guest star" status at the beginning of season 13. Other stars in other seasons included Eric Christian Olsen, Renée Felice Smith, Miguel Ferrer, Nia Long, Medalion Rahimi, Caleb Castille, and Gerald McRaney. Cast members from the original NCIS made appearances on the series with Rocky Carroll recurring in the first three seasons, and making an appearance in season six. Cast members from non-NCIS shows had also made appearances, specifically in a crossover event with Hawaii Five-0.

NCIS: Los Angeles received generally mixed-to-positive reviews from critics, but became a solid ratings hit for CBS at the time of its premiere. The series received six Teen Choice Awards for Choice Action Show, Choice TV Actress Action for Hunt, and Choice TV Actor Action for LL Cool J.