Lee Joon Gi did a terrific job, no wonder he won awards. The story was interesting and there were many twists and turns that kept you going. It was actually a very romantic story, till the last episode. Even if you watched a scene that felt cliche', it was so well executed that it was commendable. There were many good things to learn from this drama and interesting moral messages. The wife, Cha Ji Won was actually a powerful female lead till the end. She was rational and analytic, ah that was nice for a change.
The direction though, that sure was noteworthy.