Demonstone
- Ano: 1990
- País: Australia, Philippines, United States of America
- Xénero: Horror, Thriller, Action, Crime, Fantasy
- Estudo: International Film Entertainment, Fries Entertainment
- Palabra clave: investigation, u.s. marine, female journalist, army officer, supernatural killer, possessed killer
- Director: Andrew Prowse
- Reparto: R. Lee Ermey, Jan-Michael Vincent, Nancy Everhard, Peter Brown, Pat Skipper, Joonee Gamboa