Twenty-three years after scoring the winning touchdown for his college football team mild-mannered Harold Diddlebock, who has been stuck in a dull, dead-end book-keeping job for years, is let go by his pompous boss, advertising tycoon J.E. Wagglebury, with nothing but a tiny pension. Harold, who never touches the stuff, takes a stiff drink with his new pal... and another, and another. What happened Wednesday?
Unfortunately the movie The Sin of Harold Diddlebock is not yet available on Disney Plus.
| Writing | Preston Sturges | Screenplay |
| Directing | Preston Sturges | Director |
| Directing | Barton Adams | Assistant Director |
| Art | Victor A. Gangelin | Set Decoration |
| Production | Howard Hughes | Producer |
| Camera | Robert Pittack | Director of Photography |
| Editing | Stuart Gilmore | Editor |
| Editing | Thomas Neff | Editor |
| Production | Cliff P. Broughton | Production Manager |
| Art | Robert Usher | Art Direction |
| Production | Preston Sturges | Producer |
| Sound | Werner R. Heymann | Original Music Composer |
| Costume & Make-Up | Elaine Ramsey | Hairstylist |