Malpertuis is the name of an old, rambling mansion which is in reality a labyrinth where characters from Greek mythology are imprisoned by the bedridden Cassavius. He manages to keep them, as well as his nephew and niece, prisoners even after his death, through a binding testament. As Jan, the nephew, unravels the mystery, he discovers that he cannot escape the house because Malpertuis is far more significant than he was led to believe.
Unfortunately the movie Malpertuis is not yet available on HBO Max.
| Writing | Jean Ferry | Screenplay |
| Camera | Gerry Fisher | Director of Photography |
| Sound | Georges Delerue | Original Music Composer |
| Directing | Harry Kümel | Director |
| Art | Pierre Cadiou | Production Design |
| Production | Ritta Laffargue | Producer |
| Editing | Richard Marden | Editor |
| Production | Pierre Levie | Producer |
| Writing | Jean Ray | Novel |
| Production | Paul Laffargue | Producer |
| Sound | Henri Morelle | Sound |
| Sound | Paul Cayatte | Sound Editor |
| Costume & Make-Up | Claire-Lise Leisegang | Costume Design |
| Costume & Make-Up | John O'Gorman | Makeup Artist |
| Costume & Make-Up | Odette Van Der Greyn | Makeup Artist |
| Costume & Make-Up | Claudine Thyrion | Makeup Artist |
| Production | Jean-Philippe Mérand | Production Manager |
| Sound | Jacques Eippers | Sound |
