Mark Harmon's NCIS Exit Explained: What Happened To Gibbs?

What happened

NCIS agent Jethro Gibbs (Mark Harmon) left the team in season 19; here's why, and what the actor's future looks like on the hit CBS show.

Summary assembled by rule from the sources below

Timeline

1. 03:38
   First appeared on Screen RantScreen Rant

Sources