⇒ exorcist: origin

here's where the exorcist idea came from:

http://www.riverfronttimes.com/2005-10-26/news/hell-of-a-house/1

pretty crazy

and a pretty good read on imdb forum (need to login)

http://www.imdb.com/title/tt0452702/board/nest/72441100?p=1

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