This is a movie that is terminally silly and in which Mena Suvari gives the best performance, which gives you an idea of what to expect. A teenage girl returns from summer camp to meet up with her mother and the mother's impossibly-attractive yet creepily-inappropriate new partner, and this classic set-up for an exploitationer shows promise in the first half. It then veers off a cliff into really not-very-well-executed sci-fi potboiler territory that is really quite poor. Staggeringly daft, What Lies Below could almost become a midnight-movie cult classic but for very patient viewers only.
