"The Pact" has a lot going for it. First of all, there is no forced romance to make us roll our eyes. Secondly, the lead character behaves like you'd expect a person to behave! When weird things start happening, she books out of the house. When she has to go back, she brings a policeman. When she gets in danger, she screams and flails and kicks. There are still some "Why is she doing that?" sequences, but a LOT less than usual in this type of film. And finally, NO IDIOTIC TWIST ENDING THAT MAKES NO SENSE BASED ON THE REST OF THE MOVIE!
But the best thing this film has going for it is Caity Lotz. The best part, by far, of MTV's cool but sadly departed "Death Valley," Caity is very easy on the eyes and she really shines in this role -- it's a virtuoso performance. And it needed to be -- a good portion of the film is her alone, so the entire film is on her shoulders and she carries it off. Very impressive, and I hope we get to see more of her in the future.
The film is not perfect -- a major plot is given away in a serious "deus ex machina" moment, there are some plot holes that the movie ignores, and I'm still not totally sure what the very last shot of the film is supposed to mean (maybe it will be explained when the DVD is released). But there is WAAAAY more good than bad, and it's worth seeing and supporting.