A lawyer finds out that a young couple convicted of murder was in fact framed for the crime and goes to the prison with the hope of freeing them and learns the events that happened to the two from a fellow prisoner who helped them escape.
| Writing | Jesús Franco | Story |
| Directing | Jesús Franco | Director |
| Writing | Jesús Franco | Screenplay |
| Sound | Bruno Nicolai | Music |
| Crew | José Climent | Cinematography |
| Production | Arturo Marcos | Producer |