Several murders have taken place in London. All the victims are prostitutes and the murderer is using the same techniques as Jack the Ripper. Peter Dockerman, an ex-acrobat and husband of one of the victims is the prime suspect. But whoever the killer is has cannibalistic tendencies and if Scotland Yard doesn't solve the murders quickly the evidence just might be eaten!
| Directing | José Luis Madrid | Director |
| Writing | José Luis Madrid | Screenplay |
| Production | José Luis Madrid | Producer |
| Writing | Tito Carpi | Screenplay |
| Writing | Paul Naschy | Screenplay |
| Camera | Diego Úbeda | Director of Photography |
| Sound | Piero Piccioni | Music |
| Editing | Luis Puigvert | Editor |
| Art | Bruno Cesari | Set Decoration |
| Art | Juan Alberto Soler | Set Decoration |
| Costume & Make-Up | Manolita Novoa | Makeup Artist |
| Production | Sandro Amati | Production Manager |
| Production | José María Téllez | Production Manager |
| Camera | Juan Prous | Assistant Camera |
| Camera | Enrique Salete | Camera Operator |
| Editing | Anastasi Rinos | Assistant Editor |
| Directing | Mercedes Segura | Continuity |
