This show is a perfect example of the right actors in the right drama.  Everyone did a marvelous job but the two actors that really stood out to me were Hyun Bin (Gu Seo Jin/Robin) and Han Sang Jin (Ryu Seung Yeon).

With that being said, I loved it. I loved the drama and I think it ended the only way it should have ended. I've seen other people upset in the name of ethics, but I find it important that we portray mental health issues properly and do not romanticize the way people are struggling to deal with or overcome their sickness.

The story does not dwell too deep into the circus world, nor too deep into psychology; it primarily focuses on the characters, their development, and their relationships. It's like a cake with perfectly sliced pieces of comedy, suspense, romance, and psychology. No piece is bigger than the other and they all come together and make one heck of a cake.

If you liked this drama I recommend you also watch  "It's Okay, That's Love" (2014 k-drama)