Here's Why Every Former 'NCIS' Star Left The Show (A Feud, Boredom & More Are Among The Reasons!)

NCIS has made a lot of cast changes over the years. Many of the fan favorite stars are still part of the show, including David McCallum‘s Dr. Donald “Ducky” Mallard, however, there are a handful of stars who have left the show over the 20 seasons. We’re taking a deep dive into just why the