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

He can't help himself! As of now, Harmon has only appeared in the first episode of Origins, but he could show up in more, ...

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

Mark Harmon has come a very long way from his very first acting jobs. The former NCIS star has been in the business since the ...

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

Origins leaving some torn despite their excitement. The actor left the show in season 19 and acts as executive producer ...

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

For someone who said three years ago he was retiring ... He's still an executive producer, and he's stretching it as far as he can. He can't help himself! As of now, Harmon has only appeared ...

After Mark Harmon left NCIS at the beginning of ... Even though Harmon has a “stepback role” on NCIS: Origins, it’s still been exciting to see him back in the franchise after he had such ...

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

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.