Five teenagers frantically run for refuge down into a basement. They barricade themselves inside as they are being hunted down by an insane killer upstairs.Five teenagers frantically run for refuge down into a basement. They barricade themselves inside as they are being hunted down by an insane killer upstairs.Five teenagers frantically run for refuge down into a basement. They barricade themselves inside as they are being hunted down by an insane killer upstairs.