Leroy Jethro Gibbs is a fictional character and the original protagonist of the CBS TV series NCIS, portrayed by Mark Harmon in the original series and by Austin Stowell in the prequel series NCIS: Origins. He is a former U.S. From Wikipedia
The dramatic prequel finale concludes with a cliffhanger, as CBS confirms Season 2 will explore the fallout and its impact on young Gibbs.
