NCIS: Origins isn't just exploring Gibbs when he was younger — the prequel also features Mark Harmon reprising his role as ...

NCIS: Origins explores the backstory of young Leroy Jethro Gibbs, who will be played by Austin Stowell. Will Mark Harmon, who ...

NCIS legend Mark Harmon is officially returning to the small screen in CBS's highly-anticipated spin-off, NCIS: Origins. Fans ...

The actor says the young Gibbs-led prequel provides a "more raw look at these characters" and "gets much more personal" than ...