Upon arriving at the dilapidated estate of his mentor, Dr. Harker finds his former professor, Dr. Usher, radically changed. Instead of the reasoned scholar he once knew, a paranoid man is in his place and he's spiraling into madness.
| Directing | Jesús Franco | Director |
| Writing | Jesús Franco | Screenplay |
| Production | Jesús Franco | Producer |
| Sound | Jesús Franco | Original Music Composer |
| Production | Marius Lesoeur | Producer |
| Costume & Make-Up | Juana de la Morena | Makeup Artist |
| Production | Antonio Mayans | Production Manager |
| Camera | Alain Hardy | Director of Photography |
| Production | Daniel Lesoeur | Executive Producer |
| Sound | Daniel White | Original Music Composer |
| Art | J.S. Manner | Art Direction |
| Writing | Edgar Allan Poe | Short Story |
