This drama is hands down The. Best. I loved the cast, I loved the suspense in the scenes, I loved the acting skills, I loved the twists that came along the story line and every outcome. If anyone has watched Criminal Minds (US) then you must watch this drama as well. I have no regrets in watching this drama and I will for sure rewatch it as many times as I want until I become tired of it. I have successfully introduced almost all my friends into watching this drama and all of them have loved it so far. Therefore I RECOMMEND YOU! YES YOU, TO WATCH IT!!!! DO NOT WAIT!!!