I... have mixed feelings about this drama. I think it could've been amazing, but there were just a few too many little flaws I couldn't totally get into it. First and foremost, the premise that redecorated our main character with a different face. And nobody catches on. I mean, vocal cords, habits, nothing gives him away? Most of my frustrations stemmed from there, probably. It was... worth the watch, but only barely. The story was fresh in kdramaland, with political hacking and non-violent (for the most part) crime as the focus. Even that could've been spiced up a bit more, though--it never got my pulse racing like some other non-violent thrillers I've watched (Pied Piper comes to mind). But let's break it down. Acting/Cast: I first saw So Ji-Sub in Master's Sun and absolutely loved him. I still do love him. But here I was continually frustrated by his utter lack of expressions. There's a difference between subtlety and wooden, and I'm afraid he too often fell on the wrong side of that line. It wasn't a terrible showing, however, and I think he managed to carry the character adequately. Everyone else put in a good show as well, Song Ha-Yoon and Kwak Do-Won really brightened the place up when it needed it. Music: Oh dear. I'm really not very picky with music, but if I burst out laughing whenever one of the songs comes on I know I'm in trouble. I love the Phantom of the Opera, don't get me wrong, it's honestly one of my favorite operettas... but that was just a little too much for my tastes. I did like the intense rap song by Block B, however--I still listen to it Rewatch value: I'm not planning on revisiting this drama anytime soon. If I want to watch anything by this writer it'll be Signal, which I enjoyed a great deal more. I guess that's really the moral of the story here--it's not a terrible watch in the grand scheme of kdramas... but there are better thrillers to invest yourself in.