A playwright boasts he can commit a perfect crime in front of his friends, a police chief, a physician and a theater owner. Later, when the playwright's wife disappears, foul play is suspected. Did he murder her?
| Writing | Pedro Mario Herrero | Writer |
| Art | Luis Pérez Espinosa | Set Decoration |
| Production | José López Moreno | Executive Producer |
| Art | Gil Parrondo | Set Decoration |
| Editing | José Antonio Rojo | Editor |
| Directing | Julio Coll | Director |
| Camera | José F. Aguayo | Director of Photography |
| Sound | José Solá | Original Music Composer |