| Actor | Víctor Petit (as Dr. Henry Stein), José Antonio Calvo (as Teddy), Javier de Rivera (as Doctor), Fernando Villena (as Mr. Flanagan), Oscar Phens (as George), Luis Ciges |
| Actress | Maria Kosty (as Joan Stein), Sandra Mozarowsky (as Lucy), Julia Saly (as Tilda Flanagan), Pilar Vela (as Storekeeper), María Vidal (as Mrs. Flanagan), Susana Estrada (as Girl Sacrificed At The Beginning) |
| Assistant | Pedro Pardo (as Assistant Director) |
| Cinematographer | Francisco Sánchez |
| Composer | Antón García Abril |
| Creator | Rosa García (as Costume Design), Cristóbal Criado (as Make-up), Amando de Ossorio (as Special Effects), Pablo Pérez (as Special Effects), Soria-Molina (as Special Effects) |
| Director | Amando de Ossorio |
| Executive Producer | José Ángel Santos |
| Film Editor | Pedro del Rey |
| Production Company | Ancla Century Films, Profilmes, Pérez Pareja, M. Flor |
| Sound | Luis Castro |
| Writer | Amando de Ossorio |
| Links | https://www.imdb.com/title/tt0073461/ |
