Glaistig

A young woman is plagued with recurring visions of a demon-like creature that she believes she actually saw during a night in the woods with her boyfriend and their roommate.
Her attempts to get the guys to take her seriously are dismissed as false memories from a drunken night.
While driving to the backcountry, they encountered a ranger who cryptically warned them about strange sounds in the forest and the dangers of trespassing on a private stretch of land called the Devil’s Backbone.
As the days pass, the visions grow stronger and the Creature’s form becomes more clear, until one night it appears outside her window. She again tries to warn her friends, armed with knowledge that the threat is real. However, when the Creature gets inside, it’s already too late.