One of the things I reckon a lot of people fear, is being detained in a mental hospital. While I do think that things probably have improved over the years (dear God let that be true) in those facilities, it still wouldn't be something anyone would look forward to.
The acting is really good, the story engaging and the tension is high. You may feel squeamish at times and sickened, but that is what the movie wants you to feel. Not an easy watch then, but if you can watch it, you will find something that is worth your time and really engaging.
