"Turn around and go home!" Hua Yang* screamed repeatedly. She spoke with a strange voice that was all-too-familiar to her husband, Chun, who was clutching the steering wheel. More than 3 hours of driving remained, but Chun endured her frequent outbursts in the hope that, once they arrived, the Christians he'd learned about would succeed at doing what doctors and witches had failed at—delivering his wife from the evil spirit that tormented her, and from her chronic illness.