24화: 하이지는 살해된 작가 타치바나 고류의 카루이자와 별장에서 범인으로 몰린 채 살인 사건을 조사한다.

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The popular author Goryu Tachibana throws a party at his villa in Karuizawa where he declares that the person who successfully decodes a phrase will have the rights to publish his next book, a non-fiction book which will expose the name of somebody present. Akira Kamoshita of Otoba Publishing House engages Hajime to attend, however during the party Tachibana harasses Miyuki and when Hajime intervenes, he accidentally removes Tachibana's hairpiece and the writer immediately excludes Otoba Publishing from competing. Later, Hajime goes to apologize, but he is found with the body of Tachibana who had been bludgeoned to death with a blunt object by someone who also knocked Hajime unconscious. Nagano Prefectural Police Inspector Shigeru Nagashima concludes that all the evidence points to Hajime who is then arrested for Tachibana's murder against Inspector Kenmochi's advice. However, Hajime escapes police custody and attempts to find the killer. (Source: Wikipedia)