I've got mixed feelings about this drama. It had aspects I really liked, and others that just annoyed me. Still I got a very satisfying results in the end. Let's start with the things I enjoyed. I enjoyed the presentation and development of a number of characters. Mainly, Baek Seong Il and Yang Jeong Do. I can confirm the people we see at the end are not the same as the people meet in the beginning. It was very gradual though, and felt organic how each got influenced by the other. As most, I loved the relationship between the two. It's not the usual bromance, but as real partners (in crime :P). Other characters I enjoyed are a number of villains. The Maire for one is pretty intriguing. He really doesn't see himself as a bad guy, and you know he does really try, but over time he learns why it's still not good enough. There is one scene in the end between the Maire and Sung Il that is one of the strongest scenes in the drama that explores his character deeply. I've mentioned before that I really hated Ahn, but he makes an interesting villain. It's the way he becomes and villain and the things that motivate him that are interesting. Finally, more than Choi Chul Woo, I find Bang Pil Kyu to be a terrifying villain, in a good way. Everyone else served their purpose in the drama, but didn't have a lot of development happening. Sung Hee had a little change where she becomes more flexible, hence less annoying. Also another plus, the last con was just BRILLIANT! The music was very fitting. The acting varied from excellent to average, but all were very fitting in their roles. I think those who played the characters I liked are those that stood out in their acting. As for the things that annoy me, first is Choi Chul Woo. He's such an uninspiring villain. I guess he was just easy to hate and want to go down, but ultimately I just didn't care enough. Mostly what I found annoying was all the red herring and have scenes that get revealed later the drama gives us. I mean all I was thinking *come on you're not fooling me at this point, this trick is getting old*. Yeah it was pretty repetitive. Also some story threads were left semi-unfinished. What happened to that person who got beat up? We never find out. Still it was worth the watch for me. I enjoyed it, totally recommend it for the fun of it. PS: The drama gives us a very interesting surprise in the end so do keep watching until the last minute.