Harmon has had some great TV and movie roles outside of "NCIS," but for many people, he'll always be Gibbs first. Throughout ...

Understanding all of Gibbs' rules in NCIS and what they mean is essential to knowing Leroy Jethro Gibbs. Mark Harmon played ...

Leroy Jethro Gibbs, played by Mark Harmon, was the heart of NCIS for 19 seasons. He was known for his strict leadership, sharp instincts, and personal set of rules, but behind his tough exterior ...

Gibbs ( Austin Stowell) has already had to deal with the aftermath of killing Pedro Hernandez, the man who murdered his wife and daughter, in the first season of NCIS: Origins. But now the NCIS ...