Before NCIS, Mark Harmon played a womanizing sleazeball with an STD — on a show that only survived because NBC was desperate ...

Mark Harmon's son, Sean, portrayed a younger version of his father's "NCIS" character several times, so why didn't he reprise ...

Over the years, "NCIS" viewers have learned about dozens of the rules that Leroy Jethro Gibbs lives by. Here's a rundown of ...

NCIS is set to return to our screens with a prequel series, NCIS Origins, which will delve into the early days of Leroy ...

NCIS: Origins is supposed to focus on Jethro Gibbs' backstory, but they’ve done a lot more to make Mike Franks feel like a ...

However, despite his retirement, fans were surprised to see Harmon’s name remain in the NCIS opening credits for the rest of Season 19. While there was no official explanation from the network for ...

Rumor has it NCIS star Mark Harmon used his clout to get creator Donald P. Bellisario fired because they were feuding, but ...

Mark Harmon's wife, Pam Dawber, begged him not to take his role in the comedy-drama Summer School, but he proved her ...

NCIS Origins takes a deep dive into Agent Gibbs’ past when he first started out at NCIS, formerly known simply as NIS ...

Origins has introduced a few new faces to the NCIS franchise, some of its most important players debuted first in the ...