CBS announced that Mark Harmon will reprise his role as Leroy Jethro Gibbs in an upcoming guest appearance on 'NCIS' and ...

The statement continued, “Well, on Nov. 11, we’re so excited to announce that Mark Harmon will return as Leroy Jethro Gibbs ...

The veteran actor, 74, will be guest starring in the first-ever NCIS and NCIS: Origins crossover event on Tuesday, Nov. 11.

"NCIS" legend Mark Harmon is to guest star as his character, Leroy Jethro Gibbs, on the prequel, "NCIS: Origins," next month.

Mark Harmon is returning to the NCIS universe and he won't be alone! CBS and the beloved actor dropped all the details.

Mark Harmon will reprise his iconic Leroy Jethro Gibbs role in the flagship series. His return will be featured in a special (and first-ever) crossover event between NCIS: Origins Season 2 and the ...

In the first look at Harmon’s return, his present-day version of Gibbs is seen pouring himself a drink. This marks a rare ...

Mark Harmon, who spent 18 seasons on "NCIS," is reprising his role as special agent Leroy Jethro Gibbs for a crossover event.

NCIS” legend Mark Harmon is bringing his OG Leroy Jethro Gibbs character to the prequel series “NCIS: Origins,” and he’s not ...

NCIS' star Mark Harmon is reprising the role of Leroy Jethro Gibbs in an upcoming Veteran's day crossover episode of 'NCIS: ...

NCIS: Tony and Ziva spoilers tease Michael Weatherly (Tony DiNozzo) spills and reveals whether Mark Harmon will ever show up ...

Mark Harmon is making a comeback to the NCIS franchise. CBS announced that the actor will return as Leroy Jethro Gibbs for the upcoming crossover event between NCIS and NCIS: Origins. Harmon starred ...