This took me by surprise. I didn't think it would hold my interest, partly because. although So Ji Sub is an excellent actor, he has never been a favorite of mine. But the combination of outstanding acting, excellent writing and spot-on direction turned this into an engaging story with characters it was easy to like and care about. There were ample laughs without it becoming a farce, and by the end of it I was eagerly anticipating each episode. It's a great balance of romance, espionage, humor and drama, And I can't say enough good things about the cast. Watch it of you want something that will not depress you and you will find yourself truly entertained.