What an amazing drama! The gripping atmosphere, the intense music, the story-telling, the top-notch acting and so much more. Everything was just a masterpiece. Granted that there were a few instances where you, the viewer, will have to overlook minor plot instances and go with it. However, I believe that a drama need not cover all the minor plot holes and should be seen for what a drama is supposed to be - entertainment.
If you're looking for something that will keep you at the edge of your seat, holding onto your every breath and possibly questioning your own sanity, this is what you're looking for.