Demons 2 (1986)

A documentary is shown on TV of group of teens who investigate the legendary forbidden zone, in which a demon infestation once took place (see Demoni I). Finding a lifeless corpse of a demon, one of the teens causes the resurrection of it, and the demon makes its way into the nearby world by TV-broadcast - An unlucky girl having her birthday party at that time gets possessed by the demon while watching the documentary, and soon the entire building in which she lives turns into a living nightmare..