Prisoners; amateur review

I decided to watch Prisoners just because I want to eat popcorn and The Internship was not available at the moment.
I haven't really watch the trailer for this movie. Probably that is one reason why I think this movie is fantastic. I mean, seriously.
Unless if you are not fan of crime investigation, heavy suspense and emotional 2 and half hour movie with an open ending, I guess this is not for you.
Not too much laugh, in fact I felt I have frowned for 3/4 of the movie. Because of the intensity is really killing me.
Everyone in this movie is awesome. The plot is okay, but I think the actors helped a lot in this one. To be honest, I can't predict what's gonna happen next and that is rare for me.
So overall, I'd give this movie 4.5/5 star. Awesome posum. One of the best movies I have watched this year.

But why do movies for autumn season are always cold and depressing? I don't get it.