Vice cop infiltrates a jazz club to bust a heroin ring.
| Directing | Alberto Mariscal | Director |
| Directing | Juan Hernández | Director |
| Production | Antonio Matouk | Producer |
| Art | Arcadi Artis Gener | Production Design |
| Costume & Make-Up | Virginia Campos | Hairstylist |
| Costume & Make-Up | Guadalupe Beltrán | Hairstylist |
| Writing | José María Fernández Unsáin | Writer |
| Camera | Fernando Colín | Director of Photography |
| Sound | Jorge Pérez | Music |
| Camera | Raúl Domínguez | Camera Operator |
| Crew | Enrique L. Rendón Jaramillo | Sound Recordist |
| Editing | José Juan Munguía | Editor |
| Crew | Roberto Muñoz | Sound Recordist |
| Camera | Antonio Jiménez | Still Photographer |
| Costume & Make-Up | Graciela Muñoz | Makeup Artist |
| Art | Fernando Solorzano | Art Direction |