The 19 years old Thomas wakes up in a hospital after three years in a coma. He doesn't remember anything. The psychologist Anna tells him that his family has been murdered and that he is the only survivor of the massacre while his sister Laura is still missing.
You can now watch The Lost Patient online on the following streaming providers in the United States.
| Directing | Christophe Charrier | Director |
| Writing | Christophe Charrier | Screenplay |
| Writing | Elodie Namer | Screenplay |
| Editing | Stéphanie Dumesnil | Editor |
| Production | Juliette Sol | Producer |
| Sound | Alex Beaupain | Original Music Composer |
| Camera | Pierre Baboin | Director of Photography |
| Production | Sylvie Rogeron | Production Secretary |
| Directing | Aruna Villiers | Script Supervisor |
| Editing | Thibaut Petillon | Colorist |
| Editing | Romaric Nereau | Assistant Editor |
| Production | Emmanuel Thomas | Casting Associate |
| Production | Erwan Dujardin | Casting Assistant |
| Directing | Véronique Labrid | First Assistant Director |
| Directing | Justine Arrestier | Second Assistant Director |
| Writing | Timothé Le Boucher | Graphic Novel |