Kogoro appears as a guest on a radio show where he discusses the topic of an obnoxious woman living in the apartment above the listener`s. Several hours later, apartment resident Kumi goes to yell at her downstairs neighbor Towako. Kumi is furious she was mocked on a radio show, and the two get into an argument. The next morning, Towako`s body is discovered, and the police suspect Kumi killed her. Towako is the estranged wife of radio producer Manda. The police believe Manda is also involved in the case, and...