This is a tight and well made thriller that seems to be a simple story of a psychiatrist prescribing the inappropriate medication to his patient as part of a pharmaceutical company’s drug trial. He needs the money that the company is paying and maybe he was a bit lax with noticing that his patient, played by Rooney Mara, is not a good candidate. Where the film goes is way beyond that as the doctor’s world slowly starts coming apart and he attempts to piece it back together.