Mark Harmon, the face of NCIS for over 20 years, left the show in its 19th season, choosing to stay in Alaska. He was officially replaced by Sean Murray in the 20th season credits. Harmon expressed his commitment to keeping the character fresh, and despite being removed from the credits, Gibbs hasn’t retired. Fans hope for a possible return in future seasons. The farewell episode, “Great Wide Open,” hinted at Gibbs’s departure throughout. The future of Gibbs on NCIS remains uncertain, marking the end of an era for the show.