Ji Chang Wook always seems to have this strangely fantastic chemistry with the main antagonistic characters. Some of my favorite scenes in this show were just of him talking to the antagonist. And he is such a great actor that he can make anything watchable.
For the most part, the show was pretty good. But I think the plot got lost somewhere in the middle. Great potential was just never fully realized, and I think this could have done with maybe a few more episodes.
But this drama did have some great kiss scenes, so there is that.