When the Ammons family moved to their new home in Gary, Indiana, they weren't sure what to expect. Of course, they anticipated all the usual hassles of relocation -- but they weren't expecting demons. In tonight's episode, Ben, Matt and Noel explore the bizarre, tragic saga of a family beset by what they genuinely seemed to feel was demonic possession. The media, the clergy, and even members of law enforcement agreed with them. So: What actually happened?