What a great drama this was! It was surely one of the best thrillers I've ever seen! The acting in this drama was just superb and everyone deserves an award, even the crazy guy. This whole drama deserves an award. All those other actors who rejected the lead, should be regretting it right now because this drama was amazing and Lee Seung Gi did an amazing job. Cha Seung Won, I gotta tell ya, you missed a great drama. Lee Seung Gi's acting was the best of all. He can really act and Ha Ji Won, great as always. The two's chemistry was very real and they delivered it very beautifully. The story is very different from the typical drama. It really had such great moments where they were very emotional. It has been a very long time since I have cried and sobbed at the same time while watching kdramas and King2Hearts made it happen. The story is very well written and it wasn't boring at all. After every episode, it left me at the edge of my seat. It was very entertaining. I highly recommend the drama and I assure you, you will not be bored. Very good drama.