"NCIS: Origins" is bringing Mark Harmon back in front of the camera for a big Season 3 mystery. The actor and executive ...

Mark Harmon will make a full-time return to the NCIS-verse in the 2026-27 season. Harmon will appear on screen in every ...

Origins for a season-long arc. Harmon, who previously starred as Leroy Jethro Gibbs for 18 seasons on NCIS, will appear in ...

Mark Harmon last appeared as the character in a November 2025 episode of the prequel series ...

NCIS: Los Angeles' alum Eric Christian Olsen is returning to the 'NCIS' franchise, joins 'Origins' as executive producer.

Mark Harmon is appearing onscreen in a major way in Season 3. CBS has announced that Harmon will appear in all 10 episodes of ...

After a shocking exit from 'NCIS,' Mark Harmon is returning to the prequel — and will be appearing in all episodes in season ...

NCIS Special Agent Leroy Jethro Gibbs will not be making a return to the hit series...at least for now. Season 23 left the ...

A small problem Season led to "NCIS" bringing back Sean Murray for a single scene, ultimately leading to the show adding ...

Mark Harmon will play Jethro Leroy Gibbs in a season-long arc of the upcoming third season of prequel series "NCIS: Origins." ...