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

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

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

Suits L.A.' actor Stephen Amell almost went for a different network spinoff show: 'NCIS: Origins," with both auditions for ...

F or nearly two decades, Leroy Jethro Gibbs served as the main protagonist on NCIS, and now the character will soon be taking ...

Origins cast and character guide lists all the stars joining the new NCIS spinoff series based on a young Agent Gibbs.

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.

Casting Austin Stowell as Mark Harmon's Leroy Jethro Gibbs was part of the "NCIS: Origins" casting puzzle. See young Mike Franks and Vera Strickland.