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 |
| Camera | Jean Chiabaut | Camera Operator |
| Directing | Natalie Perrey | Continuity |
| Crew | Juliette Villard | Thanks |
| Sound | Gérard Barra | Sound |
| Editing | Cécile Decugis | Editor |
| Writing | André Ruellan | Screenplay |
| Writing | Alain Gerber | Screenplay |
| Directing | Jean-Denis Berembaum | Assistant Director |
| Sound | Jean Nény | Sound Mixer |
| Art | Jean-Claude Philippe | Production Design |
| Art | Jean Galland | Set Decoration |
| Production | Guy Neyrac | Producer |
| Art | Michel Caputo | Assistant Production Design |
| Sound | Louis Devaivre | Sound Effects |
| Writing | Jean-François Davy | Screenplay |
| Editing | Nicole Gauduchon | Editor |
| Directing | Alain Quercy | Assistant Director |
| Directing | Jacques Drezner | Assistant Director |
| Production | Jacques Garcia | Production Manager |
| Lighting | Gabriel Delafons | Electrician |
| Sound | Jack Arel | Music |
| Writing | André Ruellan | Novel |
| Camera | Louis Soulanes | Director of Photography |
