After a lot of thinking over and over and over, I kept changing my rating. So that is my final rating: 5.0. I am sure that I am being very merciful and hope that next time Lee Jong Suk and Park Hae Jin choose a drama with a good writer! This drama had an awesome start, everything was brilliant, but this awesomeness didn´t last long. The story is basically good, but the writers messed up after the first few eps and ruined it all. There were so many things that they wanted to resolve but they ended up with nothing because everything went in a circle, everything kept repeating and repeating that soon the originally unpredictable and thrilling plot became predictable and boring. I won´t even start talking about the ending, not wanting to spoil. Because of the good start and the good basic this gets a 5.0 or else it would have been a 1.5. The cast is awesome, if there wouldn´t be this one actress, that immediately didn´t know what to do when she had to put on a facial expression other than a blank face. This is my first drama with Jin Se Yeon but I already have her on my blacklist and hope that she´s in none of the dramas that I want to watch. The chemistry between the main couple was not convincing and I really felt bad for Lee Jong Suk (who did a great job btw) since he had to work with her. Although Lee Jong Suk showed great acting (the always repeating actions of his character Park Hoon are the writers fault), the bad writing made it disappear. Of course I liked to fangirl over him (what pretty much was the only reason I watched it for after this got worse and worse) but I don´t think I would have finished this if I wouldn´t have been impressed by the acting (excluding Jin Se Yeon´s) and the med theme. Because of Jin Se Yeon I give the acting a 8.0 because she HAD to be the female lead and because she really is one of the worst actresses I´ve ever seen. The music was brilliant, I loved every OST and have all of them on my phone right now and really enjoy listening to them so this is a clear 10 for me!! I don´t think I´ll ever rewatch this because there are so many other good dramas with Lee Jong Suk and probably with a med theme (this is my 2nd med drama, and I hated the med theme in Emergency Couple, which was my first). I wouldn´t recommend this to anyone, as long as you want to watch something you won´t be thinking you wasted time on after watching it, also not for die-hard Lee Jong Suk fans. I am really sad that this drama which had so much potential turned into this and hope that this will be the last disappointment of 2014 dramas for a while... :/