10화: 사콘은 목소리 모방과 과거의 화재 연관성을 통해 왼손잡이 살인자 아오키를 밝혀낸다.

10

Sakon deduces from evidence that a left-handed person committed both murders, but everyone there is right-handed. Sako discovers that Aoki, an assistant with his head bandaged from a fire years earlier, is really left-handed. Sakon uses Ukon to mimic the voices of the dead men, tricking Aoki into confessing that he is the killer. It is revealed that Aoki is in reality the ex-husband of Keiko, Hayami's partner, and Aoki is seeking revenge for the death of their daughter years earlier in the fire that disfigured him when he tried to save her. (Source: Wikipedia)