-Shoddy voice actors for shoddy film. I give a 6 only because the cast wasn't so bad. It's a movie that could be interesting but it's managed completely wrong.

-Some parts of the psychopathic killer seemed fake.
-They poured some action and random deaths instead of structuring more the psychological point of view (they talkedabout killer's profile only for 5 seconds).
-Part of the private life of the characters seems to be a film completely separate from the part that concerned the case.
-Non-existent case, no investigation, even the killed didn't surprised me, I mean, I could bet my house that Monica and detective's wife would die. Talking about Monica, why in the movie did they talk only about wife's death? And detective Monica? They didn't even say if she is dead (You can understand only because she is not seen anymore during the film and because the other detective is sad) but I don't know, not even a hint? I mean , for a detective she was a colleague for the other a girlfriend and they didn't mention her death at all.
-And then I didn't like this vindictive turning like executioners (but it's a personal opinion).
-However, the most important point in my opinion is that in the plot they talk a bout a cop which is a kind of criminologist when in the movie you can see something similar to a psychological analysis only a second when they talk about the profile and when he do that game with his wife, for the rest the psychological aspect is completely inexistent.