NCIS' Mark Harmon reportedly shares many similarities with his character in the series Leroy Jethro Gibbs, including his biggest hobby.

Sean Harmon, son of Mark Harmon, came up with the concept for NCIS: Origins while playing young Gibbs. Now, the prequel ...

Season 4 of NCIS could have been the end of the road for Mark Harmon, the beloved actor who plays Leroy Jethro Gibbs. Despite ...

Both “NCIS” season 22 and “NCIS: Origins” season 1 return tonight on CBS. Stream two consecutive premieres starting at 9 and ...

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

You know these stars as members of the Naval Criminal Investigative Service, who spend their time investigating crimes ...

During a confounding case of either suicide or homicide, Mike reminisces his past on NCIS: Origins Season 1 Episode 11. Read ...

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 ...

The actor explains how Alden Parker’s passion for pastries makes for an exciting murder mystery on this week's episode of the ...

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

Ziva was a beloved character on NCIS, but her story was hindered by the most repetitive plots before she was killed off (and ...