Madrid, late 19th century. A wealthy woman is found murdered in her home and her maid seems to be the main suspect; but her statement further entangles the case.
| Directing | Edgar Neville | Director |
| Production | Manuel del Castillo | Producer |
| Editing | Bienvenida Sanz | Editor |
| Camera | Enrique Barreyre | Director of Photography |
| Sound | José Muñoz Molleda | Original Music Composer |
| Directing | Enrique F. Sagaseta | Assistant Director |
| Writing | Edgar Neville | Screenplay |
| Production | Juan Francisco Blanco Lavín | Production Director |
| Production | José Martín | Production Manager |
| Sound | José Muñoz Molleda | Conductor |
| Production | Julio Busch | Production Secretary |
| Production | Víctor Villegas | Production Assistant |
| Art | Sigfrido Burman | Production Design |
| Art | Francisco Canet Cubel | Set Decoration |
| Costume & Make-Up | Francisco Puyol | Makeup Artist |
| Costume & Make-Up | Francisco Puyol | Hairstylist |
| Sound | Ramón Arnal | Sound Engineer |
