From Wikipedia, the free encyclopedia. Hans Holzer (January 26, 1920 – April 26, 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". Description above from the Wikipedia article Hans Holzer, licensed under CC-BY-SA,full list of contributors on Wikipedia.