The leader of the team brings some old documents to the detective. The documents are old, so the detective has a hard time figuring out what they are. The leader says that he will not starve to death if he does not become a police officer. The detective says that a murderer would not investigate his own crime, so he would better not move, since he has come back from his parents' death. The team leader asks the detective why he is doing this, and the detective replies that it was a "perfect imitation" of a "finger killer" . He says that the first victim was the police officers' parents, and then the killer murdered them cruelly, and that he is perfect like that. He tells the detective that the finger killer never changed his method and pattern, which is why the police were pursuing him like crazy. He also says that when he graduated from high school, he knew nothing about the disappearance of "moon seungchan," the "world-level genius." The detective asks if the lawyer's younger brother has a younger brother, and he replies that he does.