Hans Holzer (26 January 1920 – 26 April 2009) was an Austrian-born, American pioneering paranormal researcher and author. He wrote well over 100 books on supernatural and occult subjects for the popular market as well as several plays, musicals, films, and documentaries, and hosted a television show, "Ghost Hunter" (not to be confused with Ghost Hunters, a separate show).
Read more about Hans Holzer: Career, The Amityville Horror