Somebody is selling songs for two recording companies, simultaneously. The owner of one of them hires a detective to find out the swindler's identity. But the private-eye is clumsy, and messes things up even more.
| Directing | José Carlos Burle | Director |
| Directing | Hélio Barroso | Director |
| Sound | Radamés Gnattali | Original Music Composer |
| Production | Oswaldo Massaini | Producer |
| Writing | Silveira Sampaio | Story |
| Writing | Alipio Ramos | Screenplay |
| Writing | José Carlos Burle | Screenplay |
| Editing | Hélio Barroso | Editor |
| Production | Alipio Ramos | Producer |
