Before taking on the role of Leroy Jethro Gibbs on NCIS, Mark Harmon starred in Worth Winning, a comedy that has not stood ...

Mark Harmon returns to NCIS, but in a new and unique way. Here's the role he plays in the new prequel series, NCIS: Origins.

Mark Harmon left the series in season 19, but his character's life advice lives on years later Leroy Jethro Gibbs (Mark ...

Mark Harmon's beloved character Leroy Jethro Gibbs appeared in NCIS season 22, episode 19 in a storyline involving Timothy ...

Harmon’s son, Mark Harmon, was a star quarterback at UCLA in the early 1970s before going into a lengthy acting career as the star of TV shows such as “St. Elsewhere” and “NCIS” and ...

Netflix has confirmed a major casting update for The Lincoln Lawyer season four that will see an iconic NCIS star join the cast for a guest role.