Exeter Aka Backmask aka Asylum (DVD)

American horror from director Marcus Nispel. A group of teenage friends decide to hold a party at an abandoned asylum and end up inadvertently releasing an evil demon that begins to possess them one by one. They attempt to perform an exorcism without much success. Will they make it out alive? The cast includes Brett Dier, Brittany Curran, Gage Golightly and Kelly Blatz.