Korean have done a lot of whodunit crime movie, so I guess that's why some critics call this movie cliché. For me, this movie is so funny as hell! And we cant even know who is the killer is, its so unpredictable and fun to enjoy. Someone said that its impossible for Daeman character to become a genius detective just by reading detective novel, what kind of argument is that? Do movie need to be realistic as our daily life, a great movie is the kind that show something that's not ever or unlikely to happen in our everyday life, so that's what make this movie special. An average funny joe solve a murder case, finding culprit while carrying his baby too. That's what make this movie funny and I'm laughing so hard watching this. There is some flaw but they cover it up by showing Daeman's life with his family that's so hilarious. As I said a lot of time before, this is korean movie style that you cant find in any American movie. They stick you on your sit till the end. If you love "Memories of Murder" and "The Chaser", you will love this!