Exeter (2015)

Amidst a wild, drug-filled gathering at a deserted asylum infamous for its cruel history, a band of ordinary youths delve into the supernatural, triggering a chilling possession. As panic sets in, they make a frantic bid to escape, but find themselves trapped without any means of reaching the outside world. Tensions rise, bonds shatter, and they embark on a misguided exorcism to free their friend from the demon's grip. Little do they realize, their actions unleash a more malevolent entity driven by a dark agenda, thirsting for their demise. To survive, the teens must unravel the asylum's secrets and plot an escape before it's too late.