
His extensive involvement in researching the supernatural included investigating The Amityville Horror and some of the most prominent haunted locations around the world. Holzer wrote more than 120 books on ghosts and the afterlife. He went on to teach parapsychology at the New York Institute of Technology. at a school called the London College of Applied Science which has never been validated. He studied Japanese at Columbia University and, after studying comparative religion and parapsychology, claimed to have obtained a Ph.D. He went on to study archaeology and ancient history at the University of Vienna but as the family was Jewish, they decided it was unsafe to stay in Austria and left the country for New York City in 1938. His interest in the supernatural was sparked at a young age by stories told to him by his uncle Henry.



Holzer was born in Vienna, Austria, the son of Martha (Stransky) and Leo Holzer, a businessman. He wrote more than 120 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). Algeria, Angola, Argentina, Australia, Bahrain, Benin, Bermuda, Bolivia, Botswana, Brazil, Brunei Darussalam, Burkina Faso, Burundi, Cambodia, Cameroon, Canada, Cape Verde Islands, Central African Republic, Chad, Chile, Colombia, Comoros, Côte d'Ivoire (Ivory Coast), Democratic Republic of the Congo, Djibouti, Ecuador, Egypt, Equatorial Guinea, Eritrea, Ethiopia, Falkland Islands (Islas Malvinas), Gabon Republic, Gambia, Germany, Ghana, Greenland, Guinea, Guinea-Bissau, Guyana, Hong Kong, Indonesia, Iraq, Israel, Japan, Jordan, Kenya, Kuwait, Laos, Lebanon, Lesotho, Liberia, Macau, Madagascar, Malawi, Malaysia, Mali, Mauritania, Mauritius, Mayotte, Mexico, Morocco, Mozambique, Namibia, New Zealand, Niger, Nigeria, Oman, Paraguay, Peru, Philippines, Puerto Rico, Qatar, Republic of the Congo, Rwanda, Saint Helena, Saint Pierre and Miquelon, Saudi Arabia, Senegal, Seychelles, Sierra Leone, Singapore, Somalia, South Africa, Suriname, Swaziland, Taiwan, Tanzania, Thailand, Togo, Tunisia, Turkey, Uganda, United Arab Emirates, United Kingdom, Vietnam, Virgin Islands (U.S.Hans Holzer (26 January 1920 – 26 April 2009) was an Austrian-American author and parapsychologist.
