After 18 years of leading the popular CBS criminal drama, Mark Harmon has stepped away from his on-screen role
After 18 years of leading “NCIS,” Mark Harmon has stepped away from his high-profile camera role on the popular CBS criminal drama. Monday’s episode of “NCIS,” the fourth episode of Season 19, concluded with his character Leroy Jethro Gibbs, who was nearly killed in a boat explosion in the Season 18 finale, deciding not to return to his job in NCIS. “I’m not going back, Tim,” said Gibbs to Special Agent Timothy McGee (Sean Murray).