It Would Have Been A Great Movie, Except...
The ending. The escape plan was great, but leaving someone else trapped in that house is just cold. To be honest, the main character was annoying even when she was being a heroin. Other than that, the movie wasn't so bad. In fact, not bad at all. It just could have done without her. And people, please. It's just an opinion.
Also, another thing was the ballerina lady bending over showing her panties to those little girls. What was the point in that?