I absolutely love this show. I have watched it 3 times already, and know I will probably rewatch it in the future. The music in this show is incredible, and I sometimes even listen to the soundtrack while driving. This show does a great job balancing humor, drama, and mystery. It also displays things in an appropriate manner that lots of dramas tend to steer away from, or make into jokes, such as Santa's selective mutism, or Gun Wook's sexuality. They are things that are shown, and part of who they are, but are not the defining characteristics of these characters. It treats these characteristics with respect, where as other shows have turned them into jokes (I'm looking at you, Strong Woman Bo Dong Soon!) This is also a show that has an original artistic element to it. The scenes played out in Koo Kyung-Yi's mind as theater productions really helped to keep the story on track, and made it easier to follow for me, almost like a recap of the chaos that had taken place. Overall Inspector Koo is an amazing show, that is unique, artistic, funny, and serious all at once.