How Origins Got Mark Harmon On Board For His Big Return To NCIS

I'm not sure just how many NCIS fans expected Harmon to reprise his famous character, during which he'll appear in the ...

Longtime ‘NCIS’ actor returning to franchise for first time in 4 years

Mark Harmon, who spent 18 seasons on "NCIS," is reprising his role as special agent Leroy Jethro Gibbs for a crossover event.
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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 ...

‘NCIS’ star makes surprise return to series after 4 years

Harmon will return in the flesh for a special crossover event on Tuesday, Nov. 11. For one night only, “NCIS” and “NCIS: ...

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.

Mark Harmon to Make Guest Appearance as Gibbs on “NCIS: Origins” 4 Years After Exit from Franchise

The veteran actor, 74, will be guest starring in the first-ever NCIS and NCIS: Origins crossover event on Tuesday, Nov. 11.