Warning: This drama is not for the weak. I happened to watch the censored version (unintended) but there was a lot of blood and violence. Personally, it took me a few episodes to get into this drama. But by the time I was at episode 4, I felt like I had accidentally skipped an episode. But no, I really had already watched 3! So by then, I was already losing track of time. By the time I was finishing episode 7, the cast had me on the edge of my seat. Negatives? Not that I can come up with. I couldn’t find any flaws in the plot or in anyone’s acting. The only thing that may be a negative for some people is that it’s a very serious drama without any comedy. So if you are not in the mood for it or not the type, than maybe this drama won't grab your attention. (Though, despite me not being in the mood, it still made me finish it within 2 days.) Story: The plot is interesting each episode again. There isn’t ever a slow moment and everything you see builds up another piece of the puzzle to show you the episode as a whole. The main characters are all very diverse in their motivations/actions, which makes for varying situations again and again. The plot keeps on thickening by the minute. Just when a new piece of the puzzle is formed, another one seems missing. There is a lot of action, no shortage of that! Never a dull moment. Extra mention: I absolutely LOVE how they filmed this. The contrast between dark and light in most of the shots really give this drama its own feel. It adds to the mood a lot and to me makes everything come across much stronger than it might have otherwise done. Actors: The actors are brilliant in their roles and have done a great job portraying their characters. The acting was real time and time again. I believed what I was seeing. The slow developments taking place within the characters were beautifully brought! I was slowly starting to feel for each character individually, learning to understand them and their motives. Some villains even gave me the creeps the way villains should do. Music: The music added to the general feel of the episodes. Dark, action, suspense. Not generally songs that stick into your mind, but are a great asset to pull you even more into the screen and story. Especially one with a very heavy sound, it made me feel impending doom whenever I heard it. (To be honest, it made me feel the same way I always feel when I hear the alarms in Silent Hill.) I love the song Break Up by Yoon Hyung Ryul. Rewatch Value: If this is your kind of thing; no doubt you will enjoy watching it again. I’m not sure if I’ll do so myself, because it’s not a light watch, but who knows – maybe in the future I might again! Would I watch a second season? Now that I finished it: Without a doubt. Yes. I definitely would. I'm actually kind of hoping for one now.