Learn about the Marvel star who was strongly considered for the role of Dr. Donald 'Ducky' Mallard in NCIS before David ...

NCIS creator Donald Bellisario nearly canceled the show over David McCallum’s iconic role as Ducky, proving he was the heart ...

David McCallum played Dr. Donald "Ducky" Mallard on NCIS for nearly 20 years before he considered leaving the show.

NCIS star David McCallum was beloved by fans for his portrayal of Dr. Donald 'Ducky' Mallard though he struggled with the ...