I just saw this movie for the first time, and it made it into my top 20 worst movies ever. And honestly, of all the "psychological thrillers" I've seen, this may very well be the worst of them all.

About this movie, the concept is OK but it has one of the most ridicoulus and unbelievable stories I have ever witnessed in any movie of all time. It's also one of those movies where you try to ignore it but the movie just keeps shoving plot holes, inaccuracies, and bad dialogue in your face, until it's just shockingly bad.

The acting is also spotty, the characters are completely lifeless, there is literally almost no emotions portrayed here except overacted anger (very out of place, and sometimes even becomes comedy material, like the bathroom scene) or very bad crying woman scenes.

The main hero is good at literally everything, and he randomly throws some of those manly-man tantrums every once in a while like "I'm having a fucking bad day man!". Cool eh?… ok honestly the main guy is very annoying. Actually, the whole cast is kind of annoying and it's hard to sympathize with any one if them. And we never get to know anything really about their personalities. Despite the fact that, considering how the movie turns out, that would have been very interesting.

Overall the movie is very clumsily made, and feels very amateurish all the time. It's also very cheesy at times, and the acting surely doesn't help here. The standard "what do you want from us!?" scene is a good example of this, and it almost drove me to laugh out loud. Such things keeps this movie from ever becoming intense or suspenseful, and not even once did I care who the murderer was or about the (very bad) "twist".

It pretty much goes without saying that the ending was very poor and clumsy too, but I must point out that the "surprise" at the very end is so predictable that I really wonder what they were thinking there. Everyone must have seen that coming.

Overall, it felt like they didn't put much thought or effort into this at all, and just assumed the main audience of this would be complete idiots. Well, it seems they were right, judging by all the praise this gets.