Loved this drama!!! From episode 1 you are left wanting more. It starts off in a typical drama way but then the back story begins to unfold and you really get hooked. DO did a great job playing that psycho. His acting sent shivers. He nailed it. Some of the twists I did expect but the way they were revealed was great. Even though I thought I knew I still learned more about the characters as each episode went on. There was never an episode where I felt bored or like it was a filler. I dreaded getting to the last episode because I didn't want it to end. I loved that one of the underlying messages was that love beats hate. It was subtle and well done. I only wish we got more bromance. Also this was my first time seeing Park Bo Gum and he is absolutely fantastic. I can't wait to see him in other things.