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Is Mark Harmon returning to NCIS? Here’s everything you need to know

Mark Harmon returns as Leroy Jethro Gibbs in the highly anticipated NCIS and NCIS: Origins crossover event airing November 11, 2025. The two-hour special connects Gibbs’ past and present as both teams ...

Mark Harmon Sets ‘NCIS’-Verse Return With ‘Origins’ Guest Spot

Mark Harmon is making an on-screen return to the NCIS universe. Harmon will guest star in an episode of NCIS: Origins on Nov.

Inside Mark Harmon’s Emotional Ducky Moment in ‘NCIS: Origins’ Tribute

“He always had a way of knowing who I was meant to be.” So says Mark Harmon in the emotional voiceover that caps off the NCIS ...

‘NCIS’ Legend Mark Harmon Sets Guest Star Appearance for ‘Origins’ Crossover Event

"NCIS: Origins" will catch up with present-day Leroy Jethro Gibbs as part of its big crossover with the flagship series in ...

Mark Harmon to make rare 'NCIS: Origins' appearance and Gibbs is 'no longer alone'

Harmon, 74, will make a rare guest appearance on "Origins" as Gibbs, the character he played for 18 "NCIS" seasons, during ...