From my point of view, it is the classical thriller drama, it's the typical one but it works perfectly fine. It is the type of drama I like : thriller like this. It does not take risks but it works very well.

The cast is absolutely great. The main actor Seo Kang Joon is absolutely good, his acting skill is very strong and solid. I am impressed. The music is georgous as well, I truly like the osts they are all so great they goes perfectly with the drama. I'm not surprised anymore with OCN they knows whats good for their drama when it comes to osts. I also like a lot the story, which involves corruption, politics as well as crimes. Furthermore I really like how the main character should seek truth and finally revenge, it is the kind of story that always work for me, there is no boring scenes at all. It is captivating from the begining until the end, as you are discovering things along with the main actor. Let's not talk about the numbers of twists... there are too many which makes you feel like you knew nothing after all.

I really recommend it !