A crime writer gets involved in a murder investigation.
| Directing | Román Viñoly Barreto | Director |
| Writing | Nicholas Blake | Novel |
| Editing | José J. Serra | Editor |
| Camera | Alberto Etchebehere | Director of Photography |
| Directing | Jorge N. Mobaied | Assistant Director |
| Writing | Narciso Ibáñez Menta | Screenplay |
| Writing | Román Viñoly Barreto | Screenplay |
| Camera | Julio Dasso | Camera Operator |
| Sound | Mario Fezia | Sound Director |
| Sound | José María Paleo | Sound Recordist |
| Art | Mario Vanarelli | Production Design |
| Costume & Make-Up | Vicenta Miguel | Hairstylist |
| Costume & Make-Up | Alberto Nerón | Makeup Artist |
| Lighting | Juan Rocino | Gaffer |
| Editing | Héctor Gazzolo | Assistant Editor |
| Production | Carmelo Vecchione | Production Assistant |
| Production | Adolfo Cabrera | Production Assistant |
| Costume & Make-Up | Eduardo Lerchundi | Costume Designer |
| Art | Luis Vanín | Construction Manager |
| Directing | José Lagreca | Assistant Director |
