"I am a 17 year old boy. and I can say that this movie definitely worth my time. Its visuals were great, sound track was amazing and the plot against all the comments here was outstanding. Not all movies have to be about gore and violence, presumably what Zack believed too. Of course bloody messy scenes could've been adapted in to this movie easily but the movie is dark enough with the way it is now, and the addition of those scenes would've shifted the main focus. This movie gives a unique insight of a girl who is left all alone, abused by her stepfather and killed her sister by mistake. She learns that she has the power to make a difference like all of us do. Butterfly effect... Other then that if you're just looking for a classic thriller - action movie don't go to see this movie because it is something more then that."