It wasn't terrible. I think the best way to sum it up is "good idea, poor execution". The film had a good cast and the acting was pretty good and I think the plot twist was a great idea. It was just lacking in shock factor. The ending felt rushed as well, and the beginning of the film dragged on so there wasn't enough time left to really focus on the climax. The pacing was off. I remember as soon as the film was done I said "wait, so that's it?". Overall, it's not a bad movie, and I don't regret watching it. Would I recommend it? No, I probably wouldn't. Keep in mind this is simply my opinion. I know some really liked this movie.