Mark Harmon reveals how his friendship with retired NCIS agent Leon Carroll Jr. shaped his portrayal of Gibbs and led to ...

Add Yahoo as a preferred source to see more of our stories on Google. Appearing as Gibbs during the opening of Origins episode “Funny How Time Slips Away," Harmon, 74, reflected on three decades in ...

Mark Harmon played Leroy Jethro Gibbs for 19 seasons on 'NCIS.' The CBS franchise announced Mark will be a guest on the 'NCIS ...

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

Harmon was last seen onscreen as Gibbs on the prequel.

We're moments away from having Mark Harmon back on our TV screens—and we finally have a sneak peek of what he's up to. "Mark Harmon is back as Gibbs on #NCISOrigins!" the caption read alongside the ...

Mark Harmon is shedding a little light on going from being the lead on NCIS to working more behind the scenes on NCIS: ...

Pauley Perette's life and career unpacked. From her rise to fame on NCIS to her behind-the-scenes feud with Mark Harmon and ...

Mark Harmon is returning to the NCISverse in a somewhat unexpected way. “Legends on legends on legends,” an Instagram post ...

Former NCIS star Mark Harmon recently reflected on the beginnings of the show and his late friend and co-star David McCallum.

Mark Harmon may have left NCIS, but he'll forever be synonymous with Supervisory Special Agent Leroy Jethro Gibbs. Harmon brought Gibbs to life for nearly two decades. The character first appeared on ...

"NCIS" legend Mark Harmon is bringing his OG Leroy Jethro Gibbs character to the prequel series "NCIS: Origins," and he's not coming alone. Harmon, 74, will make a rare guest appearance on "Origins" ...