Which 1983 supernatural horror film was based on the overview of noted paranormal investigator Stephen Kaplan?
Stephen Kaplan: Stephen Kaplan (September 19, 1940 – June 9, 1995) was a noted paranormal investigator, vampirologist, and founder/director of the Vampire Research Center and the Parapsychology Institute of America, both of which were founded in Suffolk County, New York and subsequently relocated to Elmhurst, Queens.
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