The Ending is the Film's Biggest Flaw

Rating: 9/10 (20 October 2014)

I personally found the film to be fantastic. The atmosphere and the directing was close to flawless, and David Fincher really does use his experience well, especially in getting great performances out of the whole cast - and actually made me want to see more of Tyler Perry. Praise is obviously deserved to Fincher and the whole cast.
Rosemund Pike is a step above everyone. Her take on the twisted character was great and she will indefinitely hands down win Best Actress (Unless Anne Hathaway pulls off a miracle in Interstellar). Ben Affleck also surprised the haters and had a really convincing performance. Neil Patrick Harris played the role he is best at - The rich asshole. Great casting choices and great directing to go along with the plot twist that completely reverses the film and turns it on it's head.
Although I did not give it a 10/10 because of the ending. It would have been perfect if it actually ending with closure, rather than leaving it open and letting the audience decide the conclusion.
It worked well with Inception, Memento, Fight Club etc, but with this movie, I feel like it needed a proper ending to fully close the story. Still a great movie, definitely worth watching. 9/10