FAGOD

Lee Seung Gi saying this dramas different because of its infinite apossibilities and mind boggling happenings each episode also the time period where Ba Reum was not still reinstated in the police with the murders not happening cant be a co incidence as its agaain supporting my previous points.And if you pinpoint closely the killer is not young as in Ba reum or some other guy.Therefore I suspect its the one and ony master lee

I have a doubt though why is anyone not talking about the fact that Dr.Lee can be the main killer as you all know in Korean Dramas the unthinkable happens so pick the most simplest one or the most complicated one.Dr.Lees character is potrayed in a way wherein no one can suspect him and thats what the writers want.If on one side we know that Ba Reum is Jae Hoon and the yellow raincoat kid dont you think the charcter manipulated in such a psychological way can be the culprit also he knows so much about psychopaths yes you'll will deny and say that analyzing from circumstances nd cases and been a psycopath yourself is different.But if you exaggeratee is character virtues and plot you will be like bingo this is it cause it connects the dots.And the police officer is a distraction or can be a dead end breaker as I said possibilities are eternal and infinite.Also as defined at us I think there are only two possibilities for Ba Reum either he is the acquainted psycopath from the beggining also Head Hunters son which is being cleared now.And the brain transplant possibility seems to be off hence it cant be true unless the writers want to make the show a flop.