If you don't know who is walking through the door, how do you know if you should let them in? Karen is meant to be the one who fixes problems. It's her job, as a psychiatrist - and it's always been her role as a friend. But Jessica is different. She should be the patient, the one that Karen helps. But she knows things about Karen. Her friends, her personal life. Things no patient should know. And Karen is starting to wonder if she should have let her in ...