The drama is so good that I had to write a review for the first time. Out of all the 60 so dramas that I have watched, this is definitely in my TOP 5. Jun Ji Hyun and Kim Soo Hyun's acting made this drama spectacular and irreplaceable. The story plot is definitely innovative as I have never watched one with such storyline. Although many dramas have a supernatural genre, the writer of this drama delivered each episode very well. The cast members was selected very well, especially Jae Kyung, the evil older brother. The actor rocked at his role, definitely gave me a fright. MUSIC! The music is basically what puts the drama together. Unlike some dramas where the music is not memorable or becomes the 'signature' OST, Lyn's "Destiny" gave every episode a strike. It is just outstanding. The special effects used doesn't seem fake and every scene where super powers were used was achieved very well and it seemed real. I am not writing this because I am a drama-fanatic or bias because it is just that good. If you haven't seen this, you are just missing out. For example, my relatives who usually watches criminal genres or doesn't even watch Korean dramas as a whole enjoyed it and got hooked.