I want to sell a story for a movie or book. The story is a new genre

I want to sell a story for a movie or book. The story is new. The story is simple. Psychopath captures and kidnap victim. The victim is placed in a studio flat to live as long as the psychopath wants. The studio flat is a gas chamber with microphones and cameras and no windows. The psychopath has access remotely to what is going on in the flat, the psychopath can see and hear what is going on in the flat with one tablet. The story can have variations. The psychopath can press the button “sleep” or “kill” from his tablet and the studio flat immediately is filled with a gas that incapacitates or kills. The story is fundamentally about having absolute control over someone. The life of the victim depends on the life of the psychopath. During the story the victim never sees or hears the psychopath because the psychopath communicates in writing. The psychopath provides for food and everything else. The psychopath decides when the victim is punished and how severely. Imagine the scene, being kidnapped and waking up in a nice studio flat. By your side a tablet with this same text is written. What would you do?. The film is cheap to make because the story could be  filmed in one studio flat. The movie could be filmed with only one actor. Thank you.