On trial for murdering his girlfriend, philandering stockbroker Larry Ballentine takes the stand to claim his innocence and describe the actual, but improbable sounding, sequence of events that led to her death.
Is They Won't Believe Me on Netflix? Unfortunately the movie They Won't Believe Me is not yet available on Netflix.
| Camera | Harry J. Wild | Director of Photography |
| Production | Joan Harrison | Producer |
| Directing | Irving Pichel | Director |
| Editing | Elmo Williams | Editor |
| Writing | Jonathan Latimer | Screenplay |
| Sound | C. Bakaleinikoff | Music Director |
| Production | Jack J. Gross | Executive Producer |
| Costume & Make-Up | Gordon Bau | Makeup Supervisor |
| Art | William Magginetti | Set Decoration |
| Crew | Russell A. Cully | Special Effects |
| Art | Albert S. D'Agostino | Art Direction |
| Writing | Gordon McDonell | Story |
| Directing | Harry D'Arcy | Assistant Director |
| Sound | Clem Portman | Sound |
| Art | Darrell Silvera | Set Decoration |
| Sound | John E. Tribby | Sound |
| Sound | Roy Webb | Original Music Composer |
| Art | Robert F. Boyle | Art Direction |
| Costume & Make-Up | Edward Stevenson | Costume Designer |
| Costume & Make-Up | Mel Berns | Makeup Department Head |
| Costume & Make-Up | Eugene Joseff | Other |
| Production | Louis Shapiro | Location Manager |