I am not really a fan of genre which involves murderous acts with psychotic suspects because I don't really get why are they doing it. It just makes me feel upset and I want to kill them myself. I watched this because I previously watched the Chinese version of this and I think it gave more impact than this Korean version. The plot is quite unique because it utilizes the idea that being handicapped is not a reason for you to stop trying. It doesn't make you less of a person.

Also it's good to see a younger version of Seung Ho as well on this movie and his presence actually gave a bit of an impact to this movie plus a bonus of Park Bo Gum on his younger years. The sound effect keep the mood going and adds more thrill to the scene. It's really not a type of movie that I would want to watch again due to personal taste but I think it is fine overall.