I loved every aspect of this drama. From the superb acting of Hyun Bin, to the great setting of Spain. The story was gripping, intriguing, and not predictable at all, the latter being an abundant problem in K-dramas to-date. That is, until the last episode. I've never been this disappointed by an ending. I get that an ending doesn't have to be happy, but this just feels wrong. If the ending were better, this would probably have become my favorite drama of all time, but sadly it isn't.

Watch it if you like games and action, but don't expect feeling good when coming out of this drama.