David McCallum played Dr. Donald "Ducky" Mallard on NCIS for nearly 20 years before he considered leaving the show.
David McCallum's health did not contribute to his decline on NCIS, but limited his role as Ducky Mallard. The star actor ...
David McCallum stepped down from NCIS as Ducky Mallard, feeling his character became redundant. Here's why he made the tough decision.
NCIS creator Donald Bellisario nearly canceled the show over David McCallum’s iconic role as Ducky, proving he was the heart ...
Tragic news out of the TV world as it has been revealed that David McCallum, who played Ducky on all 20 seasons of NCIS, has died. May he rest in peace.