Mark Harmon

There's a chance Mark Harmon might make a comeback on this NCIS episode

NCIS’ Elevator Became an Unofficial Stage for Gibbs and the Team

Meet the Man Who Made Gibbs: on NCIS, Richard Warmack, the show's First Technical Adviser

Mark Harmon spotted walking his dog for the first time since leaving NCIS after retiring

NCIS: Why Did Fans Reject the Agent Gibbs and Jenny Shepard Romance