In het Los Angeles van de jaren veertig, wanneer de rokkenjager-componist Keith Vincent dood wordt aangetroffen, concludeert het gerechtelijk onderzoek dat het zelfmoord was, maar rechercheur Joe Warne is daar niet zo zeker van.
Nee, helaas is Nocturne nog niet beschikbaar op Netflix in Nederland.
| Writing | Frank Fenton | Story |
| Editing | Elmo Williams | Editor |
| Directing | Edwin L. Marin | Director |
| Production | Joan Harrison | Producer |
| Sound | Leigh Harline | Original Music Composer |
| Writing | Rowland Brown | Story |
| Production | Jack J. Gross | Executive Producer |
| Camera | Harry J. Wild | Director of Photography |
| Writing | Jonathan Latimer | Writer |
| Art | Robert F. Boyle | Production Design |
| Art | James Altwies | Set Decoration |
| Art | Darrell Silvera | Set Decoration |
| Art | Albert S. D'Agostino | Art Direction |
| Directing | James H. Anderson | Assistant Director |
| Costume & Make-Up | Renié | Costume Design |
| Crew | Russell A. Cully | Special Effects |
| Costume & Make-Up | Mel Berns | Makeup Artist |
| Sound | Terry Kellum | Sound |
| Sound | Jean L. Speak | Sound |
| Costume & Make-Up | Eugene Joseff | Other |
| Sound | C. Bakaleinikoff | Music Director |
| Crew | Barney Ruditsky | Technical Advisor |