A hit man working for the Yakuza double crosses his employers and flees with a cache of diamonds from the latest heist. Injured and hiding in the mountain regions of Spain, with Japanese assassins in hot pursuit, he takes refuge in the home of a local doctor and his two daughters who nurse him back to health and hide him from his pursuers, taking drastic and murderous measures to protect him... for they have plans of their own in store for their current guest.
| Production | Masurao Takeda | Producer |
| Writing | Paul Naschy | Screenplay |
| Production | Julia Saly | Producer |
| Directing | Paul Naschy | Director |
| Camera | Alejandro Ulloa | Director of Photography |
| Editing | Pedro del Rey | Editor |
| Costume & Make-Up | León Revuelta | Costume Design |
| Art | Luis Vázquez | Art Direction |
| Costume & Make-Up | Ángel Luis de Diego | Makeup Artist |
| Production | Paul Naschy | Executive Producer |
| Production | Hideo Sasai | Executive Producer |
| Costume & Make-Up | Consuelo Zahonero | Hairstylist |
| Directing | Sebastián Almeida | Assistant Director |
| Crew | Benito Casado | Carpenter |
| Crew | Juan Ramón Molina | Special Effects |
| Camera | Eduardo Noé | Camera Operator |
| Sound | Luis Castro | Foley Artist |
| Editing | María Florinda Vidal | Assistant Editor |
| Directing | Ángela Cristóbal | Script Supervisor |
| Lighting | Francisco Jurado | Lighting Technician |
| Directing | Kenichi Hikeda | Assistant Director |
| Lighting | Casimiro Dengra | Electrician |
| Camera | Masanori Fukuzawa | Assistant Camera |
| Crew | Teo Garcia | Transportation Captain |
| Lighting | Motogiro Noguchi | Lighting Technician |
| Art | Kiosi Hasimoto | Assistant Art Director |
| Production | Masataka Shibahara | Production Assistant |
| Lighting | Antonio García Gálvez | Lighting Technician |
| Camera | Kenji Hagiwara | Camera Operator |
| Costume & Make-Up | José Quetglás | Assistant Makeup Artist |
| Sound | José Antonio Bermúdez | Sound Engineer |
| Editing | Blanca Rodríguez | Assistant Editor |
| Production | Masurao Takeda | Production Coordinator |
| Camera | José Salvador | Still Photographer |
| Camera | Juan Antonio de la Cueva | Assistant Camera |
| Lighting | Katsumasa Naoi | Lighting Technician |
| Lighting | Antonio Sánchez | Lighting Technician |
| Lighting | Katsunari Uchida | Lighting Technician |
| Costume & Make-Up | Carmen de la Casa | Costumer |
| Production | Josep Guerrero | Production Assistant |
| Camera | Juan Cobo | Assistant Camera |
| Directing | Tosihiro Nakahara | Assistant Director |
| Art | Eiji Tsuchiya | Assistant Art Director |
| Production | Hidemasa Ogata | Production Assistant |
| Production | Masakatsu Saito | Production Assistant |
| Production | Felipe Ventura | Production Assistant |
| Camera | Guillermo Peña | Assistant Camera |
| Production | Modesto Pérez Redondo | Production Manager |
| Directing | Junichi Suzuki | Assistant Director |
| Lighting | Diego Molina | Lighting Technician |
| Sound | Enrique Molinero | Sound Engineer |
| Camera | Kazuumi Sugimoto | Assistant Camera |
| Art | Julio Arribas | Property Master |
