Story - The fact that this drama took on a story that you never see scored it some big points with me. It was a very nice change from the usual girl-pretending-to-be-a-guy or I-hate-you-but-I-love-you dramas that always seem to air. The person that thought this one up is, in my opinion, a genius. Acting/Cast - Before this even came out, I was already waiting in anticipation because I absolutely love So Ji Sub and Lee Yeon Hee. I was definitely not disappointed. Those two, as well as the rest of the cast, did an amazing job in their roles. The good guy roles, as well as the bad guy roles, were very believable. Music - This was probably one of my favorite parts. The first half of the drama or so, you hear 'The Phantom of the Opera' a lot, and that song is incredible. Then there was the instrumental 'GHOST' that played a lot that I thought was fantastic. The rest of the songs + instrumentals played throughout were amazing as well. Rewatch Value - I don't really like to rewatch dramas often, but I could definitely imagine myself watching this one again at some point in the future. Overall - Overall, this whole drama, I think, is perfect. Like most dramas, it had its ups and downs, but I feel like the pros far outweighed the cons. There are two factors that really set this drama apart from other dramas for me. 1) The main focus of this drama wasn't a love story. In other dramas, that's almost always either a main story, or it becomes on 1/4 of the way through. 2) It didn't spend the whole time dragging on with one storyline. There were a few smaller ones tossed in that kept it interesting without taking away from the drama as a whole.