The longtime lead of the CBS series had signed on for only a limited number of episodes in 2021-22.
The longtime lead of the CBS series had signed on for only a limited number of episodes in 2021-22.
The actor has starred as Special Agent Leroy Jethro Gibbs since the show’s premiere in 2003
Mark Harmon, Leaves 'NCIS', After 18 Seasons.
Mark Harmon has left “NCIS” as a regular cast member following 18 seasons..