Posted in: CBS, TV | Tagged: NCIS, ncis: originsNCIS: Origins Season 3 Teaser: Mark Harmon's Gibbs Returns This FallReturning on October 6th, CBS released a promo Austin Stowell-starring NCIS: Origins Season 3 teasing the return of Mark Harmon's Gibbs. Article Summary NCIS: Origins Season 3 premieres October 6 on CBS as part of NCIS Tuesdays, with a new teaser now online. Mark Harmon’s Gibbs returns in a major way, driving a present-day mystery tied to his Camp Pendleton past. CBS says the NCIS: Origins Season 3 story will unfold all season, with Harmon also narrating every episode. The mini-teaser hints at an action-packed fall for NCIS: Origins as CBS builds toward its October return.