This show was great for episodes 1 to 13. Up until 13, it had me on the edge of my seat the whole time. It almost made it easily in my top 10 shows. Then, came that sloppy, what the heck happened ending. It was like the writer was replaced by someone who wanted to sabotage the show. The acting was great throughout the entire show. The OST was fine. The writing was great for episodes 1 through 13. Then, episode 14 came. That was when things got sloppy. I held on for hopes that my ending would be a happy one. It was satisfactory in one way and totally unsatisfactory in the way it left so many questions unanswered. It was one of those endings that leaves you scratching your head and thinking “ What the heck was that?” I really think that the writer had no idea how to make it end. I gave this show a rating of 8 just because the first 13 episodes were so great.