Marian Forbes is de secretaresse, de geliefde en het brein achter het financiële succes van Harris Chapman. De problemen beginnen als Chapman verliefd wordt op een ander meisje en besluit om met haar te trouwen. De wraak van Marian is vreselijk.
Nee, helaas is The 3rd Voice nog niet beschikbaar op Netflix in Nederland.
| Writing | Hubert Cornfield | Writer |
| Directing | Hubert Cornfield | Director |
| Production | Hubert Cornfield | Producer |
| Writing | Charles Williams | Novel |
| Sound | Johnny Mandel | Original Music Composer |
| Production | Maury Dexter | Producer |
| Costume & Make-Up | Dick Hamilton | Makeup Artist |
| Art | John B. Mansbridge | Art Direction |
| Art | Mac Mulcahy | Set Decoration |
| Directing | Willard Kirkham | Assistant Director |
| Directing | Frank Parmenter | Assistant Director |
| Costume & Make-Up | Alma Johnson | Hairstylist |
| Camera | Ernest Haller | Director of Photography |
| Production | Harold E. Knox | Production Supervisor |
| Editing | John A. Bushelman | Editor |
