I usually dislike Yeo Jin Goo in historical roles but this was one of his better ones so that's nice for a change. While the story may have been interesting at first but it didn't quite live up to its premise. The clone needed to have a better introduction and build up. The king was useless and had no role other than to kick-start the narrative. We only had brief interactions between the clone and the king. The drama would have been infinitely more interesting and enjoyable if it wrote the king as a prominent character and had a consistent dynamic with the clone. The last episode was awful in all regards, a significant downgrade compared to any of the previous episodes. No thought or care put into it at all. An outsider must have wrote the last episode alone, there's no other way! With all that being said, I found the drama to be a decent watch with a handful of interesting elements, if you were to temper your expectations you'd find something to like about it too.