As I read many reviews the two things people hate this movie for is: It's a crime-thriller and not a horror story like the book was. Because I haven't read the book I can't say on what level they differ, but the movie is still very interesting and exciting. And the other thing is the ending. I agree that it comes a bit fast and leaves you kinda hanging, BUT it fits the whole frosty northern scenery well and makes the story line a full circle. I really enjoyed it, can't really understand why it gets so much hate.
When an elite crime squad's lead detective investigates the disappearance of a victim on the first snow of winter, he fears an elusive serial killer may be active again. With the help of a brilliant recruit, the cop must connect decades-old cold cases to the brutal new one if he hopes to outwit this unthinkable evil before the next snowfall.