Harmon appeared in 437 episodes of NCIS across 19 seasons. A Marine Corps scout sniper who's tapped to command a team for the Naval Criminal Investigative Service (NCIS), Harmon plays Gibbs ...
When CBS's NCIS: Origins premieres on Monday, October 14, viewers are going to have two Leroy Gibbs on their hands. Of course, Austin Stowell is playing the younger version of the popular character ...
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