I watched the film Inside this week, it's an Irish horror film. It is one of those found footage films, told posthumously from the perspective of the camera person. A man goes in to a pawn shop and tries to sell something but the manager only wants to give him so much, so they negotiate some money and a camcorder. The film follows the man who watches the footage on the camera he has just acquired.
A group of girls are celebrating a birthday and inexplicably they decide the place to go is a disused office building down some side streets of a city. They break in and start having a party. Unfortunately the party is violently interrupted by some men, I think they might be homeless men. It's not clear why the men are in the building but they start to attack the girls in the party but are interrupted. From then on the film follows the survivors as they try to escape and evade whatever it was that attacked the attackers.
Not a bad film, it manages to the action going without ever feeling over long or too slow. The acting is pretty good from what seem to be a group of unknown actors. The story is quite unsettling and stays with you for a while.