When NCIS needed someone to portray a young Leroy Jethro Gibbs, the show’s team didn’t need to look far to find the right person. Sean Harmon – the son of Gibbs actor Mark Harmon – stepped ...

Mark Harmon's son, Sean Harmon, seemed like an obvious choice to play young Leroy Jethro Gibbs in NCIS: Origins, but they ...

If you're among those curious why Sean didn't return, this is why Mark Harmon's son doesn't play young Gibbs on "NCIS: Origins." Read more: Messed Up Ways Main Characters Were Killed Off While ...

MORE: Inside Mark Harmon's sweet bond with lookalike son Sean Harmon "I said, 'Can I just call? Can I get a number and just ...

Origins," from playing his father's iconic character to producing the prequel. Discover his thoughts on the cast and the show's creation.

Mark Harmon and Pam Dawber have been married since ... Harmon and Dawber's older son, Sean, was born in 1988, while their younger son, Ty, was born in 1992. Both Sean and Ty have followed in ...

Origins has introduced a few new faces to the NCIS franchise, some of its most important players debuted first in the flagship series. The prequel centers on one of the most essential NCIS characters ...

Mark Harmon and his wife Pam Dawber have been enjoying ... play a young Leroy Gibbs - is a family affair, as Mark's actor son ...

While fans might not be seeing Mark back on their screens in NCIS: Origins, he'll be behind the scenes as an executive producer alongside his son, Sean Harmon, who came up with the concept for the ...

Mark Harmon starred alongside Sean Connery in the 1988 flop that earned a 1.5-star rating from Roger Ebert and a 41% Rotten Tomatoes score.