NCIS alum Mark Harmon is making a big public appearance. He will be appearing at Books & Greetings in Northvale, New Jersey, with retired NCIS special agent Leon Carroll Jr. on April 14. The duo will ...

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," ...

We enjoyed seeing them play off of each other in a different way that we hadn't seen before,' says exec producer Gina Lucita Monreal of the two agents who will, one day, trust each other completely.

NCIS: Origins Season 2 is subtly rewriting the end of Mark Harmon's story as Leroy Jethro Gibbs, rethinking his NCIS ending as he narrates the series.

Mark Harmon will reprise his “NCIS” role of Leroy Jethro Gibbs this week, a return that the TV legend said brought him back to the “tough” early days of the CBS franchise. Tuesday’s crossover event ...

Mark Harmon and Bruce Springsteen may not seem like they've got much in common. Turns out the two go way back, including ...

(CBS) - Mark Harmon will make a special guest appearance as Leroy Jethro Gibbs on NCIS: Origins on Nov. 11. Harmon played Gibbs for 18 seasons on NCIS. In the crossover event airing on Veterans Day, ...

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 ...