The 73-year-old actor played special agent Leroy Jethro Gibbs on the hit CBS show for almost 20 years before leaving in 2021 ...

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.

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

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.' ...

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 ...

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

In short, there are a lot of tales that can be told through Mark Harmon's book and the TV show he headlined for so many years. Whether NCIS will depict more real-life cases is unknown, but fans ...

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 ...

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 ...