Fans will finally be able to see Mark Harmon's grand return to the part of Leroy Jethro Gibbs in an ambitious crossover ...

Mark Harmon is stepping back into the role of Leroy Jethro Gibbs after his exit from NCIS. CBS announced on Tuesday, October ...

We'll get to see more of modern-day Leroy Jethro Gibbs in the 'NCIS' prequel series — and he's no longer alone!

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

Mark Harmon is returning to the NCIS universe and he won't be alone! CBS and the beloved actor dropped all the details.

NCIS legend Mark Harmon revealed what initially drew him to the long-running naval procedural drama — and explained what ...

NCIS” legend Mark Harmon is bringing his OG Leroy Jethro Gibbs character to the prequel series “NCIS: Origins,” and he’s not ...

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

But arguably the biggest reveal came with learning why Ducky talks to bodies, which we saw the late David McCallum did when ...

Mark Harmon will make a guest appearance asa Leroy Jethro Gibbs in the November 11 episode of 'NCIS: Origins.' ...