Mark Harmon on returning to NCIS world as producer of prequel "NCIS: Origins" 04:47 Mark Harmon, widely known for playing Special Agent Leroy Jethro Gibbs on the hit CBS drama "NCIS," is stepping ...

Mark Harmon will make a cameo in the premiere episode of 'NCIS: Origins.' The new spinoff series will take place early in Gibbs' career. The new ... Who is Maud Beaton on ‘The Gilded Age’ Again?

Mark Harmon, who played the 'NCIS' lead Leroy Jethro Gibbs for 18 years, is returning for an appearance on ‘NCIS: Origins’ ...

NCIS alum Mark Harmon is all aboard for a full-time return to the show in an attempt to save the ratings-challenged series ...

Mark Harmon returns as Leroy Jethro Gibbs in the NCIS: Origins premiere, but his appearance keeps where he is and who may be talking to vague.

Mark Harmon returns to NCIS, but in a new and unique way. Here's the role he plays in the new prequel series, NCIS: Origins.

Mark Harmon's expanded role in NCIS: Origins also holds a lot of mystery. Beyond Harmon's role as the narrator, where he shares insights into young Gibbs' grieving mind, his scenes are limited to ...

It was confirmed last month that Mark Harmon would indeed have a physical presence in the upcoming prequel NCIS: Origins. Now we're learning more about what that presence will entail. According to ...