Good, intense and disturbing movie, but unclarified events made the story confusing and less strong.

Rating: 7/10 (24 February 2016)

Even though the movie was slow paced, the great acting and the horrifying story made this movie a very intense and quite disturbing experience. However, at the end of the movie I felt that I wasn't satisfied with the way that things were explained. Some clues were given that did not contribute or even contradicted some characters:
!!-- Spoilers from this point on--!!
1. When Alex walked the dog, he tortured it for a few seconds. I think this was done to give the audience a negative perception of Alex which would give Keller reason to torture him. I think this does not really beat with the plot in which Alex appeared to be innocent and if you interpret the sentence: "They only cried when I left them", you might even conclude that Alex was of a comfort to the kidnapped girls. (Might be a wrong interpretation on my side). 2. I think it is not properly explained why Alex couldn't tell who the real bad guy was. 3. Joy says that Keller used duct tape on her mouth, but it wasn't explained why she thought that and it made me believe that Keller was schizophrenic and involved in the crime.
These (and a couple more) events might have made the story more confusing than it needed to be. More details on the things that happened to Alex/the kidnapped girls could have cleared this confusion (or I am missing things). Also I think that there was quite a lot of coincidence and too little detective work involved in solving the mystery.
In the end I think it still is a good movie depicting the moral dilemma of Keller very intensely.
Not taking this in account in my review, but I found the movie so intense, dark and disturbing that I wished it to end and I wasn't entertained that much.