This was pretty cool. I love the storyline. I confess, I did skip from Episodes 15 to 18 but I will go back and watch it. It had me focused but my patience ran out on this one (lol). Another South Korean who has them dang sparkling beautiful eyes. Seo Kang Joon had to play two characters and HE Did that! I really believed that he was a robot and the original Nam Shin. Joon was successful in playing a robot. It reminded me of Cain and Abel in the Bible. I have to do more SKJ to put him on my Fav actors list. I thank the rest of the cast for doing their part in this KDrama or it wouldn't have worked. The Visuals, the scenery, and the action are very well done.