I don't have words to describe this drama. It made me wanna jump over because of all the feels I got there (specially in the end). That kind of drama that makes you wanna scream of happiness and cry like a baby at the same time.What I can say is that whoever wrote this are geniouses and made a very very good job. I have to say I never thought I would enjoy so much an action type of drama but everything was perfectly wrote and thought since the sequence, the minimum details to the stories behind and the ost. It messed up with my days because I couldn't handle not watching it speacially because of that countdown it gives us at the end of each episode, that creeps you out and it's amazing. I really love the way thing fit in this drama and how they didnt do such a cliché and was always catching you. There's the whole melodrama thing, you never know what is going to happen, it's not predicable and this isnt a romantic based story. Of course, there is romance but that's not what they are focusing and they managed it all so well. Oh, I think they deserve a prize. The actions scenes and the special effects were great but the thing I loved more was that in one minute you were super high on that moves and the story, you have the urge of fight and run, the other you were fearing for someone or in deep love and then you were almost dying of crying. It really shows every side of human beings and the circunstances and how you can be totally smart for some moment and then do such a terrible mistake that ruins it all. I think the ones who can do this and work well in a drama plus ending like that can only deserve a space in the drama sky. Just to add something: I saw some comments about the ost saying that it wasnt quite good and everything but I liked and also I love when I hear non Korean songs playing on the cafes or other places. There's even one song that reminds me of Sherlock Holmes theme, so yeah, I really enjoyed and thought it had to do with the drama. You know, the music makes you feel something and their choice of ost was just what I would put to feel everything there.