Mark Harmon returns to 'NCIS' for a special crossover with 'NCIS: Origins,' airing Tuesday at 9 p.m. ET/PT on CBS.
'NCIS: Origins' star Caleb Foote joins ET at Baha Mar Resort, sharing Mark Harmon's advice and show secrets.
Mark Harmon chats with ET’s Kevin Frazier about his latest non-fiction book, ‘Ghosts of Panama,’ which is available now.
Mark Harmon and Austin Stowell chat with ET about their series, 'NCIS: Origins,' which airs Mondays on CBS.
Mark Harmon and Austin Stowell chat with ET's Kevin Frazier about their new show, 'NCIS: Origins,' which airs Mondays on CBS.
Austin Stowell chats with ET’s Kevin Frazier about playing a young Gibbs in ‘NCIS: Origins,’ which airs Mondays on CBS.
Mark Harmon, Austin Stowell and the ‘NCIS: Origins’ cast chats with ET at the CBS TCAs. ‘NCIS: Origins’ premieres Oct. 14 on CBS.
The cast of 'NCIS: Origins' chats with ET about their prequel series, premiering Oct. 14 on CBS.
Damon Wayans Jr., Max Greenfield and more stars chat with ET at CBS’ Fall Schedule Celebration.
Mark Harmon, Sean Harmon and the 'NCIS: Origins' cast chat with ET's Kevin Frazier at the CBS Fall Schedule Celebration in Los Angeles.
The prequel will tell the story of how Leroy Jethro Gibbs became an NCIS agent in 1991.
The show aired its first episode on Sept. 23, 2003.
ET honors the 1000th episode of 'NCIS' by unlocking never-before-seen ET interviews with the cast from 2003 to now!
Harmon, 72, left the long-running CBS drama in 2022 after 19 seasons.
