NCIS: Origins In 1991, years prior to the events of "NCIS," a young Leroy Jethro Gibbs starts his career as a newly minted special agent at the fledgling NCIS Camp Pendleton office where he forges his place on a gritty, ragtag team led by NCIS legend Mike Franks. Details Casts Videos Posters Season Lists Title NCIS: Origins Genres Crime Drama First Air Date Last Air Date Episode Runtime 00 Hours 00 Minutes Total Season(s) 1 Total Episode(s) on All Seasons 1 Runtime Production Companies CBS Studios Mark Harmon... Leroy Jethro Gibbs (voice... Austin Stowell... Leroy Jethro Gibbs... Mariel Molino... Special Agent Lala Doming... Kyle Schmid... Special Agent Mike Franks... Tyla Abercrumbie... Field Operation Support O... Diany Rodriguez... Special Agent Vera Strick... NCIS: Origins (CBS) Teaser HD - Gibbs prequel series (Teaser) Original Size (1080x1620) Season 1 1 Episode(s)