Jong Sam breaks into Pil Sung's office and gets caught. He confronts Pil Sung about his association with Lee Kwang Ho. Pil Sung threatens to expose Jong Sam's identity. Meanwhile, the Hidden Crimes Team figures out the missing evidence from the night that Jin Jung Gil passed away.
종삼은 진영이 자신 때문에 칼에 찔렸다고 생각해 자책에 빠진다.
한편 필성은 자신의 과거에 계속해 접근하는 종삼이 거슬리는데..
