Demonstone
- Año: 1990
- País: Australia, Philippines, United States of America
- Género: Terror, Suspense, Acción, Crimen, Fantasía
- Estudio: International Film Entertainment, Fries Entertainment
- Palabra clave: investigation, u.s. marine, female journalist, army officer, supernatural killer, possessed killer
- Director: Andrew Prowse
- Emitir: R. Lee Ermey, Jan-Michael Vincent, Nancy Everhard, Peter Brown, Pat Skipper, Joonee Gamboa