Warren Nefron is a hopeless klutz who has some of the worst luck in the world: when he tries to end it all with a foolproof suicide plan, he still manages to mess it up. In desperation, he goes to a psychiatrist to see if there is some way for him to end his troubles.
| Directing | Jerry Lewis | Director |
| Editing | Gene Fowler Jr. | Editor |
| Sound | Morton Stevens | Original Music Composer |
| Art | Terry Bousman | Art Direction |
| Production | Arnold H. Orgolini | Producer |
| Writing | Jerry Lewis | Writer |
| Writing | Bill Richmond | Writer |
| Camera | Gerald Perry Finnerman | Director of Photography |
| Directing | Roz Harris | Script Supervisor |
| Crew | Ted Duncan | Stunt Coordinator |
| Sound | Rocky Moriana | Music Editor |
| Art | Art Lipschultz | Property Master |
| Sound | Gene N. Fowler | Music Editor |
| Production | David Israel | Location Manager |
| Costume & Make-Up | Mary Keats | Hairstylist |
| Sound | Bill Teague | Sound Mixer |
| Costume & Make-Up | Jack Stone | Makeup Artist |
| Production | John Conwell | Casting |
| Costume & Make-Up | Darryl Levine | Wardrobe Supervisor |
