Although it's true that the killer wasn't caught so the movie didn't fulfill the expectations like other movies, but it did provide closure because the killer was identified ultimately, but couldn't be prosecuted and this shows how the law takes its course, and requires evidence and due process. The movie overall is good with a interesting start, and it's also gripping throughout, with some very tense moments. But one thing I disliked was that there was too many names, people and places which were getting mixed up, and created confusion. Overall, I can say that it's a long movie and even if you don't watch it won't matter, because yes despite all positive points, it still lacks something and leaves a bit dissatisfied in relation to the time invested.