I am going to attempt to write some sort of review without giving anything away so here goes...
I thought this was a great little film. I have read in a few places that it wasn't all that good and to be honest I have no idea what those people are on about it. It's possible that they assumed this was some sort of horror movie. It isn't. So if that's what you're expecting you will be disappointed.
Yes it is rated R and so it should be although it's not exactly gory just violent in parts.
I thought it was very well done with only bits of information being given as it goes a long. There was one scene that lead me to think this could become predictable but I was pleasantly surprised. I didn't expect the outcome. Or more like I did expect a part of that outcome but not how it got there or how it ended up. That probably makes no sense but that's the only way I can put it without spoiling it.
So basically a great little film with violence, twists, mystery, some suspense and, well, high heels...
9/10