Is Mark Harmon leaving NCIS? Harmon has played Gibbs for 15 years
Fans asking is Mark Harmon leaving NCIS can put their minds at ease. Harmon has played Leroy Jethro Gibbs for 15 years and has now entered his 16th season on NCIS. Along the way, there have been a lot of rumors about the future for Gibbs or whether Harmon wanted to stay with the show. Toward