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.
Unfortunately the movie The Beasts' Carnival is not yet available on HBO Max.
| Directing | Paul Naschy | Director |
| Writing | Paul Naschy | Screenplay |
| Production | Masurao Takeda | Producer |
| Production | Julia Saly | Producer |
| Camera | Alejandro Ulloa | Director of Photography |
| Production | Hideo Sasai | Executive Producer |
| Production | Paul Naschy | Executive Producer |
| Editing | Pedro del Rey | Editor |
| Art | Luis Vázquez | Art Direction |
| Costume & Make-Up | León Revuelta | Costume Design |
| Costume & Make-Up | Ángel Luis de Diego | Makeup Artist |
| Costume & Make-Up | Consuelo Zahonero | Hairstylist |
| Costume & Make-Up | José Quetglás | Assistant Makeup Artist |
| Production | Modesto Pérez Redondo | Production Manager |
| Directing | Sebastián Almeida | Assistant Director |
| Directing | Kenichi Hikeda | Assistant Director |
| Directing | Tosihiro Nakahara | Assistant Director |
| Directing | Junichi Suzuki | Assistant Director |
| Art | Julio Arribas | Property Master |
| Crew | Benito Casado | Carpenter |
| Art | Kiosi Hasimoto | Assistant Art Director |
| Art | Eiji Tsuchiya | Assistant Art Director |
| Sound | José Antonio Bermúdez | Sound Engineer |
| Sound | Luis Castro | Foley Artist |
| Sound | Enrique Molinero | Sound Engineer |
| Crew | Juan Ramón Molina | Special Effects |
| Costume & Make-Up | Carmen de la Casa | Costumer |
| Editing | Blanca Rodríguez | Assistant Editor |
| Editing | María Florinda Vidal | Assistant Editor |
| Directing | Ángela Cristóbal | Script Supervisor |
| Crew | Teo Garcia | Transportation Captain |
| Production | Josep Guerrero | Production Assistant |
| Production | Hidemasa Ogata | Production Assistant |
| Production | Masakatsu Saito | Production Assistant |
| Production | Masataka Shibahara | Production Assistant |
| Production | Masurao Takeda | Production Coordinator |
| Production | Felipe Ventura | Production Assistant |
| Camera | Juan Cobo | Assistant Camera |
| Camera | Juan Antonio de la Cueva | Assistant Camera |
| Lighting | Casimiro Dengra | Electrician |
| Camera | Masanori Fukuzawa | Assistant Camera |
| Lighting | Antonio García Gálvez | Lighting Technician |
| Camera | Kenji Hagiwara | Camera Operator |
| Lighting | Francisco Jurado | Lighting Technician |
| Lighting | Diego Molina | Lighting Technician |
| Lighting | Katsumasa Naoi | Lighting Technician |
| Lighting | Motogiro Noguchi | Lighting Technician |
| Camera | Eduardo Noé | Camera Operator |
| Camera | Guillermo Peña | Assistant Camera |
| Camera | José Salvador | Still Photographer |
| Camera | Kazuumi Sugimoto | Assistant Camera |
| Lighting | Antonio Sánchez | Lighting Technician |
| Lighting | Katsunari Uchida | Lighting Technician |
