Mark Harmon Did Not Expect to Like 'NCIS' -- and Almost Had Another Name on the Show (Exclusive)

‘NCIS’ Stars React to David McCallum’s Death: Mark Harmon & More

Who is David McCallum's wife Katherine and do they have children? - A look at the late NCIS star's marriage and family as he dies aged 90

David McCallum of The Man from UNCLE and NCIS fame dies aged 90