Story: Starting off with the story, I think overall it was pretty good. It kept me on the edge my seat the whole time. The thing that really irritated me was how the last episode played out. I definitely think they rushed it there were a lot of questions, but aside from that, it was good.

 Acting: I think the actors did a pretty good job, I really enjoyed watching the onscreen.

Music: OH MY GOD the music for this was really good. I mean the ending song was amazing, and it came on in the right places too.

Rewatch Value: I don't really rewatch stuff ever, but I this one I might, just because there was so much happening.

Overall: Overall I think this was one of the best drams of 2017, the story was good as well as the acting. Just wish that they had tied all the string as the end, but except for that, it was great.  People who love mysteries, and action, should definitely watch this.