NCIS has seen numerous cast changes throughout its 20 seasons.
While some fan-favorite stars like David McCallum’s Dr. Donald “Ducky” Mallard have remained with the show, others have departed for various reasons over the years.
From boredom to the demanding working schedule, there are several factors that have led to cast members leaving the series.
For a deeper look into why each main character left NCIS, tune in to new episodes airing on Monday nights at 9pm ET on CBS.
