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

NCIS star Mark Harmon very nearly walked away from the show after season 4 due to a behind-the-scenes clash with one of his ...

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

A fter working together on the medical drama Chicago Hope, Rocky Carroll and Mark Harmon reunited on NCIS in 2008 when the ...

NCIS spoilers from a cast member suggest that fans are going to lose it when a character from the past returns for an ...

NCIS star Cote de Pablo found out about Mark Harmon's opinion of sick days the hard way, after a doctor told her to stay home ...

Mark Harmon played Leroy Jethro Gibbs for years on "NCIS," and now Austin Stowell has taken on the role for "NCIS: Origins." ...

A heartfelt tribute to David McCallum, a surprise return from Michael Weatherly, and why Mark Harmon was missing from NCIS.

NCIS Origins once again expands the NCIS universe and now UK fans can delve into the back story of Agent Leroy Jethro Gibbs.

NCIS Origins will delve into the backstory of veteran Agent Leroy Gibbs when he first joined Camp Pendleton in the 1990s.