With NCIS and the CIA working together once more in NCIS Season 22, can they settle their differences like Alden Parker ( ...

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 ...

NCIS: Origins is here to give us the story we didn’t know we needed. The iconic Leroy Jethro Gibbs is younger, rougher around the edges, and just starting out in his career.

The entire scope of Mark Harmon’s role in NCIS: Origins is still under mystery. Besides his role as a narrator who gives the ...

Except, of course, he did help cast it. Related: Mark Harmon on Why Austin Stowell Is the Perfect Young Leroy Jethro Gibbs ...