In 1986, the Smurls brought in famous demonologists Ed and Lorraine Warren to help investigate. They announced the house was haunted by three minor spirits and a powerful, evil demon. They tried to persuade the demon to leave by playing holy music and praying. The alleged demon reacted by shaking mirrors, dressers and drawers. Jack and Janet both report being sexually assaulted by shadowy, humanoid figures, and that pig noises.