OMG Yang Sejong is such a discovery after watching this, I have never seen him in any drama before (Yeah I haven't watched Romatic Doctor Teacher Kim yet), but boy... he is the pillar of this drama! Story 8/10 I love the scifi elements mixed with the mistery and detective stuff, though despite that I found later in the story that the father and daughter kidnapping plot is getting a little bit repetitive, and the clone stuff was far more interesting, still, the writer choose to focus on the father and daughter plot more instead. Also, there are some plotholes and questions that the writer hasn't answered yet in the end, which is unsatisfying for me, but overall, it was a nice thriller scifi mystery drama, so an 8 score is deserving. Acting/Cast 9.5/10 YANG SEJONG IS THE NEW GOD OF ACTING! Anyway he is so good at potraying three people, it feels like they are really three different persons, the cop ahjussi is good too, the acting was stellar except for the two actress in this drama that were kinda... so so, they are the Doctor Mom, and that Mirae girl. Music 8.5/10 Music is appropriate to the scenes, overall I like it enough. Rewatch Value 7/10 The thriller and suspense will not be as good as the first time watching it. Overall 9/10 It was such a beautiful story overall plotholes aside, because of this... nowadays I'm anticipating Yang Sejong's future project after this drama, I'm now becaming his big fan, without him, this drama will be nothing, his characters are the most interesting thing out of this drama.