Mark Harmon Explains Why His Son Sean Isn't Playing Young Gibbs in 'NCIS: Origins' Series

Mark Harmon originated the iconic role of Gibbs on the CBS series NCIS and now the spin-off television show NCIS: Origins will follow Young Gibbs.
While Mark‘s son Sean Harmon played a younger version of Gibbs on several episodes of NCIS, he will not be reprising the role on the prequel series.
Mark explained why in a new interview!
Keep reading to find out more…“He’s an actor, writer, producer, a surfer, he does a lot of things. You have to come to decisions about what