Mark Harmon has grown to become a TV veteran thanks to his role on NCIS as agent Leroy Jethro Gibbs, a character he portrayed ...

Here's what you need to know about the man, the myth, the legend. Mark hails from the illustrious Harmon family. His mother, ...

Mark Harmon expected NCIS to be dark and gritty — then it became a quippy crime procedural. Not what he signed up for, but it ...

NCIS' Mark Harmon reportedly shares many similarities with his character in the series Leroy Jethro Gibbs, including his biggest hobby.