Is Agent Leroy Gibbs, played by Mark Harmon, making a comeback on "NCIS"? Is Agent Leroy Gibbs, played by Mark Harmon, making a comeback on "NCIS"? After being in the program since the pilot episode, the special agent's character made a stunning exit in the fourth episode of the most current season.

Tensions are reportedly growing between Mark Harmon and his wife, Pam Dawber, that the couple has said to have reached a rough patch because of the hit-action drama.

Mark Harmon and his wife Pam Dawber have been married for 35 years now, but they're reportedly feuding over the future of their careers; is this true?

"NCIS" will never be the same again because Mark Harmon is finally leaving the show after 18 years of portraying the lead role of Leroy Jethro Gibbs.