Mark Harmon continues his collaboration with former special agent Leon Carroll Jr. in their groundbreaking NCIS book series!

The prequel follows Gibbs' early days at NIS.

'Ghosts of Sicily' hits shelves on April 14 ...

Fans of the CBS drama got a sneak preview of Mark stepping back into Gibbs' shoes on Instagram. Mark spoke about whether he plans to return to the NCIS franchise in a full-time capacity. We're moments ...

"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" ...

Mark Harmon’s narration about Ducky As with every episode, Mark Harmon provides the opening and closing narration, and it’s the latter that’s especially emotional. The episode reveals just how Ducky ...

Harmon, who played Gibbs for 18 seasons on “NCIS,” is the narrator of “NCIS: Origins,” but a Veteran’s Day crossover event will mark his first on-screen appearance since the prequel series’ 2024 pilot ...

Mark Harmon may have left NCIS, but he'll forever be synonymous with Supervisory Special Agent Leroy Jethro Gibbs. "Mark's always been part of the show, Mark's always going to be part of the show," ...

The upcoming NCIS and NCIS: Origins crossover brings Mark Harmon back onscreen as Leroy Jethro Gibbs, though his presence remains a constant part of the prequel. He serves as an executive producer and ...

His appearance will be part of a crossover between the prequel and the flagship series. By Rick Porter Television Business Editor The crossover will find the younger Gibbs and the NCIS team ...

[Warning: The below contains MAJOR spoilers for NCIS: Origins Season 2 Episode 3 “The Edge.”] “He always had a way of knowing who I was meant to be.” So says Mark Harmon in the emotional voiceover ...