Mark Harmon, who played the 'NCIS' lead Leroy Jethro Gibbs for 18 years, is returning for an appearance on ‘NCIS: Origins’ ...

NCIS: Origins viewers will hear and see Mark Harmon when the CBS spinoff premieres. During a panel discussion with reporters ...

According to TVLine and Deadline, NCIS: Origins co-showrunner David J. North revealed during a panel discussion with ...

It’s not supposed to be about old Leroy Gibbs — this is about his younger self coming up in the Naval Criminal Investigative ...

The NCIS-verse has expanded, and Mark Harmon is still along for the ride. CBS announced in January that a sixth spinoff ...

Even though Harmon will only serve as his character's narrator, he will actually be making a brief appearance in the two-hour ...

And so far, they’re all doing just fine. NCIS: Origins’ arrival comes three years after Mark Harmon departed NCIS in Season 19’s fourth episode, titled “Great Wide Open.” Having already ...

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Origins, we're gathering everything we know about the series that will give fans a glimpse into how Jethro became the Gibbs we love.

Here's everything you need to know about who plays Young Gibbs on the NCIS: Origins cast. The new NCIS spin-off debuts soon.