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

Harmon, 74, will make a rare guest appearance on "Origins" as Gibbs, the character he played for 18 "NCIS" seasons, during ...

Gibbs gets a visitor at Camp Pendleton from DC Headquarters in a new NCIS: Origins Season 2, Episode 3 sneak peek. See the ...

As NCIS: Origins moves forward, fans can expect emotional complexity, professional stakes, and romance that’s both teased and ...

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

The Veterans Day crossover will feature the younger Gibbs (Austin Stowell) and his team investigating the small-town death of a naval officer in the ‘90s on Origins – a case that will be unexpectedly ...

Mark Harmon will make a guest appearance asa Leroy Jethro Gibbs in the November 11 episode of 'NCIS: Origins.' ...

Mark Harmon will reprise his role as Leroy Jethro Gibbs in the first hour of the NCIS and NCIS: Origins crossover event airing on November 11. The crossover storyline begins in the 1990s with Gibbs ...

NCIS: Origins has set the stage for a compelling romance between Gibbs (Austin Stowell) and Lala (Mariel Molino), but the ...