I liked everything. I enjoyed every second. I had a problem with nothing. And I didn't get bored or fell out of love for a moment. The drama presented different syndromes and psychological problems in details so the audience -even if completely ignorant- would at least understand a rough idea about the syndrome. And at the same time it was never boring. I learned about some for the first time and I learned and researched more about the ones I had an idea about. The acting of the main cast and the guests were superb. I must applaud Song Chang Ui's performance. He did a great job. There were some fun moments, in the right place. The music was suitable. The mystery remained till the end and I liked that -OCN!- I liked how the cases would seem unrelated but end up as a part of a chain. Again; the great dramas are cruelly short. Hope there's another season. OCN lets us hope. Thanks fortune there's God's Quiz to make us hope. Here's the Currently Watching article I wrote when I started watching the drama: http://mydramalist.com/article/2015/01/15/currently-watching-dr.-frost