Fans will finally be able to see Mark Harmon's grand return to the part of Leroy Jethro Gibbs in an ambitious crossover ...

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

NCIS Season 23 Episode 4 is titled Gone Girls and it will air on November 4 on CBS.

Harmon will return in the flesh for a special crossover event on Tuesday, Nov. 11. For one night only, “NCIS” and “NCIS: ...

NCIS Season 23 is already making quite the uproar with its fresh premise, which is making this season truly intriguing.

Mark Harmon will return to NCIS as Gibbs in CBS’ epic NCIS x NCIS: Origins crossover event episodes. Here’s what we know.

Origins to make a cameo appearance as Gibbs. Find out when to expect to see him make his second appearance on the series.

When Mark Harmon departed NCIS in 2021, it took three years before he returned onscreen as his fan-favorite character, Leroy ...