Nadine used to live in a cult in the late 60s with her mother and brother. But they escaped and she made a life for herself, helping others as a psychiatrist. Then one day, Heather comes into the hospital where she works after trying to kill herself. Heather was staying at the cult and they are harassing her now that she left. Nadine's past memories coming flooding back and she tries piecing together the past and breaking up the cult with horrifying results. 
 Loved it.