Steve Hill (Gary Clarke) left the show in the first half of Season 3. He wrote many
episodes of Get Smart (1965), writing all the episodes with Hymie the Robot. He
was on episodes of Alfred Hitchcock Presents (1955) and Boris Karloff's Thriller (1960).

Gary Clarke was born Clarke Frederic Lamoreaux
on August 16, 1933, and he is French and Mexican.