So, I'm RUINED by this show. Been hours since I watched it last night but I still haven't gotten over it. I don't think it's possible. Because Duel is the kind of show that takes your heart, kicks it hard, keeps kicking, and just when you think you can't take it anymore it grabs it and smashes it on the floor, starts stomping on it repeatedly. You think I’m exaggerating? I'm not. This is one of those shows that get under your skin, you know? Change you. You'll never be the same person. What I loved about this one was that no one sat around drinking soju and eating pork chops ???? (nothing wrong with that, just making a joke) every scene was integral to the story. No filler content. Just sixteen hours of fast paced action, chase, and mystery. Naturally, this is officially going on the list of my top rated shows with I Remember you and White Christmas. I'm in awe of Yang Se Jong who played both characters so well, they felt like two distinct people. A lot of times, I see actors relying on props and make up to play different parts and it comes off as kind of gimmicky. But Se Jong does it all in a subtle way, there's nothing loud or gimmicky about his acting. Of course, he's a great looking kid, with real acting chops. Everything from his body language, to his facial expressions morphs, you start to worry if he has multiple personalities inside his head. His eyes are so expressive, you'll be able to differentiate between the villain's stare and the male protagonist's stare. Se Jong is an amazing actor. The way his whole face, his body reacts to the things and the people around him, it's just mind blowing to watch. So much maturity for such a young age. I don't usually like 'double role' shows where the same actor plays two roles, usually they're not convincing, and like I said end up being corny, but this show is believable. I know I'm going to watch it a million times.