Splintered (2010)

This film is a U.K movie about Sophie and her group of friends who go on a trip to an area of Wales looking for some kind of beast that is killing in the area. While camping Sophie and a friend hear something so they follow it to an abandoned estate. They soon become aware that something is not right and they end up in trouble. Meanwhile their friends go searching for them after they realize Sophie and their friend haven't returned. They all end up in a fight for their lives against someone or something that isn't what you think. Who will live?