Donald Bellisario and Mark Harmon allegedly butted heads because the leading actor had become upset over the series creator’s ...

Mark Harmon recently told Kelly Ripa and Mark Consuelos that his first role was for a Kellogg's commercial beside his father, ...

Donald Bellisario's alleged feud with Mark Harmon reportedly contributed to his exit from NCIS after four seasons.

Despite leaving the show to tackle a fresh challenge, Mark Harmon is apparently not against the idea of returning to the main ...

Mark Harmon may not have much of an acting role in NCIS: ORIGINS, but he is still very much involved. He reflected on his ...

CBS rookie show NCIS: ORIGINS just secured a full-season order. “NCIS: ORIGINS is currently averaging 6.2 million total ...

Related: NCIS: Origins Star Austin Stowell Reveals the Personal Tragedy He Used ... Except, of course, he did help cast it.

Actor Mark Harmon is developing a reputation for incessantly meddling with the production and cast of “NCIS: Origins.” He was ...

NCIS spin-off NCIS: Origins has had its future confirmed. The prequel series, focusing on a young version of Mark Harmon's Leroy Jethro Gibbs, was initially given a 13-episode order (it's so far aired ...

Gibbs goes undercover in a tux with Lala as NIS works the case of a dead Navy seaman. Check out the NCIS: Origins Season 1 Episode 6 Spoilers!