Terrance Cottrell Jr. was winding down his summer in Milwaukee, getting ready for a new school year at a new school. The boy did not live the untroubled life of other 8-year-old children, suffering as he did from autism, and his mother would be sending him to a school better able to deal with his condition. Then one Sunday morning in August he was made the focus of a religious ceremony of a kind that still mystifies most of the public. The Cottrell family minister, Ray Hemphill, performed an exorcism to cast out demons and thereby heal Terrance of his condition. The faithful gathered around the boy in their storefront Apostolic church and held him on the ground even as he struggled against them. Because of his diminished capacity to communicate, a result of autism, Terrance was unable to tell the pastor that he could not breathe. After two hours of prayers for exorcism, someone finally noticed the boy wasn't breathing. Hemphill was arrested, and once more the public interest was alive with debate and fascination about exorcism. Who, after all, is performing these ceremonies? Have we not learned from modern psychiatry that mental illness is not caused by demonic possession? Or was C.S. Lewis correct in saying, "The greatest trick the devil ever pulled was in convincing the world he didn't exist"?Most of what the popular culture knows about exorcism and demonic possession is gleaned from The Exorcist, a film classic that celebrates its 30th anniversary this year. Since its release this imaginative horror picture, based on the novel of the same name by William Peter Blatty, has whetted an appetite and widespread interest in exorcism that in turn has produced other films, books and broadcasts that have tended to encourage the practice. Biblical literalists point to exorcisms performed by Jesus, citing Luke 8:26-40 and Mark 1:23-36. These accounts, as well as Ephesians 6:10-18, which are seen as a charter for spiritual warfare, gave rise to the practice of exorcism among early Christians.