Mark Harmon once discussed the likelihood of appearing in a hypothetical series finale for the long-running ‘NCIS’.

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

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

NCIS: Origins has been confirmed to feature an appearance from Mark Harmon as Leroy Jethro Gibbs, with fans set to see the ...

Mark Harmon is finally confirmed to return as Leroy Jethro Gibbs more than three years after his last appearance as the ...

While it was previously announced that Harmon would return as older Gibbs to narrate the series, NCIS: Origins co-showrunner ...

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

It was playing the younger version of [Mark Harmon's Leroy Jethro Gibbs]. One was via Zoom, and this audition for suits was actually in person, which I remember being incredibly excited about because ...

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

When CBS's NCIS: Origins premieres on Monday, October 14, viewers are going to have two Leroy ... of Harmon making a return appearance, North is keeping the door open. "We are focusing on him ...

The NCIS - verse has expanded, and Mark Harmon is still along for the ride.