Night Wolf (2010)

Sarah Tyler returns to her troubled family home in the isolated countryside, for a much put-off visit. As a storm rages outside, Sarah, her family and friends shore up for the night, cut off from the outside world. But something comes out of the driving rain and darkness. Something that holds a dark secret so devastating that, in one night, it could wipe out the entire family.
Jonathan Glendening
Isabella Calthorpe, Tom Felton, Gemma Atkinson, Josh Bowman
28 Aug 2010 (UK)tt1411232 , England, Barn, Murder, Werewolf, Storm, Power Outage, Teenagers, Attic