WOW. I enjoyed this drama immensely. The story is intriguing. It has mystery, action, betrayal, and romance. Two draw backs for me is that there are some unrealistic police procedures and they don't play up the romance as much as I would have liked (this isn't a romance though, so I guess I can't really complain that much). I wish I could post spoilers because I have a lot to say about this drama and no one to say it to. The cinematography is excellent as well as the way it is directed. I was never bored. Oh and for once no one had amnesia after being hit in the head numerous times. The acting is stellar. I haven't seen any of Jung Kyung Ho's dramas since Sorry, I Love You. I had forgotten that he is a great actor. The way he portrays Jung Shi Hyun/Doctor's Son is amazing. I rarely cry during dramas, but he made me cry twice with his heart wrenching scenes. All of the other actors are good too. However, Kim Yoo Mi as Ji Sook stands out above the others. Not only is the character well written, but her portrayal of the character brought Ji Sook to life for me. I wanted to be her friend. I love the music also. I would probably rewatch this. If you enjoy suspense and action, then I think this is a drama that you would enjoy. I highly recommend it.