Throughout Mark Harmon ’s run on the first 19 seasons of NCIS, the show would occasionally throw out a Gibbs Rule. Those are ...

Along with the late David McCallum, Mark Harmon is arguably the actor who's most commonly associated with the "NCIS" ...

The dramatic clash between creative control and business interests that nearly derailed NCIS’ spinoff success.

During the many years that Mark Harmon portrayed the iconic agent Leroy Jethro Gibbs on NCIS, his influence extended beyond his on-screen performance to the work ethics and standards he promoted ...

NCIS creator Don Bellisario's fiery "volatile" reputation sparked behind-the-scenes drama, with directors acknowledging his ...

Rule 4 — “The best way to keep a secret: Keep it to yourself. Second best: Tell one person—if you must. There is no third ...

A nice side-effect of Harmon’s narration is that it helps with Stowell’s own performance as Gibbs. “When we do the table read, Mark is there. But I read the [narration] lines because it help ...

I did three episodes, I don't even know how long ago, and I might get stopped for that in airports as much as anything else.' ...

But fortunately, the fates smiled upon them with that three days of sunniness, resulting in Mark Harmon and Sean Murray being excellently lit as the episode was winding down. After the case they ...

David Osmond spoke with "NCIS" Star Mark Harmon and real-life retired NCIS Special Agent Leon Carroll Jr. about their latest ...

Cliff Lipson/CBS “NCIS was great. Mark Harmon, salt of the Earth, generous, really made me feel welcome there. They told a very cool story with my character. Oftentimes when you come in and ...

He recalls Cole and Gibbs’ (Harmon) argument about who would defuse the bomb: “In the end, time’s running out, and he has this moment with Mark Harmon where he’s like, ‘You got to get ...