This thriller is both entertaining and suspenseful. It is a familiar concept, but what makes this particular film work is the chemistry among the actors. Watching the students band together, using all of the resources available to them, in order to stop the alien invasion of their school before it goes worldwide, was actually fun to watch. Sure, there are plot holes and other problems, but they don’t detract from the overall entertainment value of this film. An added twist at the end gives it an extra notch up, too. This movie is worth a watch.