I watched this ages ago but neglected the final two episode because I was distracted with life lol. I get that there were two killers and Jung Ba Reim was a killer...but wasn't he trying to get the killer in the end? or did he have surgery and had memory loss and his dad put the other killers brain tissue into his head. so did he actually kill people or did the other guy? And he now has empathy which is why he turned himself in at the end. I should probably watch it again lol