Episode 12 - Moon Il-seok, I am arresting you.

Detective Jae-kyung arrests Teacher Kim who shot Tae-san, but the gun has already disappeared. Mr. Kim is released with a lawyer's identification. Jang Seok-doo and Hwang Dae-joon discover a hidden recorder in the pawnshop and are shocked to hear Tae-san's voice recorded inside. Meanwhile, Detective Jae-kyung arrests Il-seok on suspicion of murdering Oh Mi-sook.