 | Víctor Petit als Dr. Henry Stein |
 | María Kosty als Joan Stein |
 | Sandra Mozarowsky als Lucy |
 | Julia Saly als Tilda Flanagan |
 | José Antonio Calvo als Teddy |
 | Javier de Rivera als Doctor |
 | María Vidal als Mrs. Flanagan |
| Fernando Villena als Flanagan |
| Oscar Phens |
 | Susana Estrada als Girl sacrificed at the beginning |
 | Luis Ciges |
| Amando de Ossorio | Director |
| Amando de Ossorio | Writer |
| José Ángel Santos | Executive Producer |
| José Antonio Pérez Giner | Producer |
| Pedro del Rey | Editor |
| Ana Criado | Hairstylist |
| Cristóbal Criado | Makeup Artist |
| Modesto Pérez Redondo | Production Manager |
| Pedro Pardo | Assistant Director |
| Alfredo Fernández | Camera Operator |
| Antonio Luengo | Still Photographer |
| Blanca Rodríguez | Assistant Editor |
| Antón García Abril | Original Music Composer |
| Francisco Sánchez | Director of Photography |
