Mr. Belvedere Rings the Bell (1951)

Posing as a man over 70, a lecturer (Clifton Webb) enters an old-folks home to prove age is a state of mind.

Directed by: Henry Koster

Starring: Clifton Webb, Joanne Dru, Hugh Marlowe, Zero Mostel, Doro Merande, William H. Lynn

Links: IMDb, Movie posters, Movie stills