Demonstone
- Ano: 1990
- País: Australia, Philippines, United States of America
- Gênero: Terror, Thriller, Ação, Crime, Fantasia
- Estúdio: International Film Entertainment, Fries Entertainment
- Palavra-chave: investigation, u.s. marine, female journalist, army officer, supernatural killer, possessed killer
- Diretor: Andrew Prowse
- Fundida: R. Lee Ermey, Jan-Michael Vincent, Nancy Everhard, Peter Brown, Pat Skipper, Joonee Gamboa