killer revealed...**SPOILERS**

well after all this buildup the killer is quite a let down. Detective Hae Ryung is most likely clean but the boys who work under him are dirty? And went around killing people? How weak is that? Park Hoon (played Tae Woo's husband in earlier episodes in flashbacks) has arrived, alive and well...like did they seriously just give him a proper introduction just to give us a true mastermind? I know it isn't officially him yet but still...this drama is dwindling and fast...I think maybe they need to throw in a romance or something to keep me invested because that reveal was laaaaaammmmee.