First the story: it's like a rolling thread ball, all you have to do is to follow the thread ! .. it's simple in general yet it's very complicated if you do deep in each character story.. i like the suspense in it, but i feel the end was a little rush, maybe because it was only 11 episode ! idk.. maybe if it was 16 it had to be more comfortable to the writer to make it more thrilling ! Acting: i'm really in love with Ma Dong Seok (Park Woong Cheol) since i watched him in 38 Task Force and i have to say his acting is so natural ! I loved Jo Dong Hyeok (Jung Tae Soo) he was a bad ass and hot which i totally approve, as for Kim Sang Joong (Oh Goo Tak) it was my first time watching him in drama so i gonna say that sometimes i felt sorry for him, sometimes i felt like killing him which i think means he played his role very well, and Park Hae Jin (Lee Jung Moon) all i have to say he became my new crush and that's it !.. finally i wanna talk a little bit about the female cop, she was really bad and irritating to watch - no hard feeling or disrespect - but i didn't like her in this drama, maybe someday i will like her in another drama, who know !? I loved the background music, bur here's no song get stuck in my head , so i will say that the music was very normal, nothing to remember ! finally this drama was good, and i really wish for a season 2 .. it will be great !