Don't listen to these bad reviews!
This movie really challenged me to think about how I view male victims of sexual abuse.
Sure it's not usually three hooded women in black masks and chains and all that... but it apparently happens more than you'd think.
As for the actual film quality.. I found it absorbing and the main character's performance was incredibly vulnerable and honest.
I've read some women had a hard time either sympathizing or identifying with the victim. I didn't have a problem there. I felt just as worried for him as I ever have any female victim in movies, perhaps even more so because he had no one to turn to for help.
I was disappointed that we never find out who did it, but I disagree with some on these forums who say knowing their motive is necessary. I think we can infer different motives, and the ending does alright without it.