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

Mark Harmon holds Jethro Gibbs close ... a young Gibbs — a role once played by Harmon’s son, Sean Harmon, on seven episodes of “NCIS.” For the prequel, Sean serves as an executive producer.

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 ...

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 ...

The new Gibbs of 'NCIS' Austin Stowell will play the younger version of Mark Harmon's character ... in flashback by the actor's real-life son, Sean Harmon, who came up with the idea of the spinoff ...

Sean Harmon initially laid the groundwork for ‘NCIS Origins’, a series that will explore a much younger, troubled Leroy Jethro Gibbs. “I believe that very few people are actually ‘born ...

The Mark Harmon from 'NCIS' is virtually unrecognizable as a dimwitted high school teacher in 'Summer School.' ...

Mark Harmon was drawn to playing Gibbs on NCIS because of the character's name Leroy Jethro Gibbs. Leroy Jethro Gibbs is an ...

Mark Harmon holds Jethro Gibbs close ... Austin Stowell will portray a young Gibbs - a role once by Harmon's son, Sean Harmon, on seven episodes of "NCIS." For the prequel, Sean serves as an ...