NCIS: Origins airs Tuesdays at 9 p.m. ET on CBS, sandwiched between NCIS and NCIS: Sydney. The next episode will introduce ...

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 ...

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

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

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

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: ...

Mark Harmon is set to return to the NCIS universe in a special crossover event uniting NCIS and NCIS: Origins. The upcoming ...

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 ...

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

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

Even though Harmon left the main series, he’s never really left the “NCIS” world. He’s still an executive producer on both shows and narrates every episode of “Origins.” Plus, he made a cameo during ...