Dr. Charles treats a patient whose mother claims she's possessed but in actuality, Dr Charles finds a more sinister reason for the patient's long-term condition that dates back to the patient's childhood. br br Season 3 Episode 15 "Devil In Disguise"br Dr. Daniel Charles and Dr. Reese are at odds when trying to diagnose a patient whose mother claims that she is possessed. Meanwhile, Dr. Rhodes and Dr. Bekkar have a difference of opinion when trying to save infant conjoined twins. Maggie faces the disciplinary committee following her recent actions. Also, Dr. Choi's sister asks to move in with him.