David McCallum Dies: ‘NCIS’ Actor & ‘Man From U.N.C.L.E’ StarWas 90

David McCallum, who wrote the hit 1960s spy drama "The Man from U.N.C.L.E." Had acted in.

Starred as Ilya Kuryakin in Robert Vaughn's Napoleon Solo.

After playing a supporting role as pathologist Dr. Donald "Ducky" Mallard on the top-rated series "NCIS", he died of natural causes in New York City. He was 90 years old

His son Peter, speaking on behalf of his family, said: 'He was the kindest, nicest, most patient and loving father.

He looked forward to any opportunity to connect with his grandchildren and had a unique relationship with each of them.

He and his youngest grandson, 9-year-old Whit, can often be found having deep philosophical conversations in the corner of a room at family parties.

“He was a true Renaissance man – he was fascinated by science and culture and would turn those passions into knowledge.

He was able to conduct a symphony orchestra and actually perform an autopsy based on his decades-long studies for his role on NCIS.