Mark Harmon and ‘NCIS: Origins’ Cast Spill on How Prequel Differs From OG Series

Mark Harmon, Sean Harmon and the ‘NCIS: Origins’ cast chat with ET’s Kevin Frazier at the CBS Fall Schedule Celebration in Los Angeles.

​Mark Harmon, Sean Harmon and the ‘NCIS: Origins’ cast chat with ET’s Kevin Frazier at the CBS Fall Schedule Celebration in Los Angeles. Read More