This plot is sort of in construction but my idea is my character is a young woman in her prime who is incredibly traumatized. It all started when she was young she was in high school her parents were killed by a former Teacher who use to sexually abuse her unfortunately no evidence was found to lock him up all evidence pointed toward her. She was placed in a very well funded mental institution and remained there for years. suddenly a very respected psychologist arrives. He believes he can rehabilitate the girl. When she meets with him he Hypnotizes her into doing anything he wants (Which happen to be various sexual acts). In this he concludes she has a sexual disorder. He claims he can cure it and demands she stay with him at his house. much later into the story he reveals to her that he is the old teacher that killed her parents to begin with. also that he planned to keep her there and make her his forever.
I see this being a psychological thriller with a sex twist. For the doctor I was picturing a silver fox kind of guy like Anthony Stewart Head or something.