Mark Harmon Returning To ‘NCIS: Origins’ As Gibbs For Season 3

Mark Harmon is returning to NCIS: Origins for a season-long arc in Season 3. Having starred as Leroy Jethro Gibbs for 18 seasons of NCIS, Harmon will appear in all episodes to address a present-day mystery connected to his 1990s Camp Pendleton days. This marks his third appearance on the spinoff series. Additionally, the long-time franchise lead serves as an executive producer and provides the narration for the prequel series, marking his full-time acting return to the screen.