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

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

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

Per Variety, Harmon will reprise his role as Gibbs in an upcoming episode of NCIS: Origins, the prequel spinoff series of ...

A whopping 489 episodes of NCIS have aired so far, making it one of the longest-running shows of all time. Any new fan with enough time on their hands will have plenty to enjoy, and so will those ...

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

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

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

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

NCIS Season 23 Episode 3 titled “The Sound and the Fury” was a Halloween-themed episode that brought back a familiar face ...

NCIS season 23 episode 3 dives into blackmail investigations, a mysterious weapon, and team dynamics as Knight trains with ...

Mark Harmon is making an on-screen return to the NCIS universe. Harmon will guest star in an episode of NCIS: Origins on Nov.