Mark Harmon Is Going Back to Work in NCIS: Origins Season 3

Gibbs really is coming out of retirement. Mark Harmon returns for every episode of NCIS: Origins Season 3, with present-day Leroy Jethro Gibbs pulled into a case that takes him from his quiet life in Alaska back into familiar NCIS territory.

At the same time, Austin Stowell's younger Gibbs is tackling the case that started everything 34 years earlier. The two timelines will connect through one mystery, giving NCIS: Origins a new way to bring Harmon's Gibbs directly into the story.

NCIS: Origins Season 3 returns October 6 on CBS and Paramount+.