The Ghost House Underground presents an entry from Denmark with not a lot of special effects, but it sustains suspense and anxiety. A small-town sixth-grade class gets a substitute teacher. She is blond, long, lean and lanky with all the finesse of a Nazi interrogator. She treats the children rudely and sadistically taunts each and every one as she indulges in mind control. The children try to alert their clueless parents, but Miss Ulla(Paprika Steen)finds it too easy to manipulate them. Carl(Jonas Wandschneider)and Phillip(Nikolaj Falkenberg-Klok)convinces the class to take matters into their own hands. Upon some snooping they find reason enough to believe the substitute is from another planet.