The young artist Wanda Leibovitz comes to Paris, hoping to forget unfortunate love. Soon after arrival directly at the station Wanda meets the mysterious old woman suggesting to rent at it the room (whom the old woman, allegedly, held ready for the now deceased sister). Wanda doesn't know yet that this room will change all her life shortly after it slightly opens a mysterious forbidden door.
Unfortunately the movie Threshold of the Void is not yet available on HBO Max.
| Directing | Jean-François Davy | Director |
| Production | Guy Neyrac | Producer |
| Directing | Jacques Drezner | Assistant Director |
| Art | Michel Caputo | Assistant Production Design |
| Camera | Jean Chiabaut | Camera Operator |
| Production | Jacques Garcia | Production Manager |
| Art | Jean-Claude Philippe | Production Design |
| Directing | Jean-Denis Berembaum | Assistant Director |
| Lighting | Gabriel Delafons | Electrician |
| Sound | Louis Devaivre | Sound Effects |
| Writing | Alain Gerber | Screenplay |
| Crew | Juliette Villard | Thanks |
| Sound | Gérard Barra | Sound |
| Directing | Natalie Perrey | Continuity |
| Art | Jean Galland | Set Decoration |
| Writing | André Ruellan | Screenplay |
| Writing | Jean-François Davy | Screenplay |
| Sound | Jean Nény | Sound Mixer |
| Editing | Cécile Decugis | Editor |
| Editing | Nicole Gauduchon | Editor |
| Directing | Alain Quercy | Assistant Director |
| Writing | André Ruellan | Novel |
| Sound | Jack Arel | Music |
| Camera | Louis Soulanes | Director of Photography |
