Towako's body is discovered the morning after Kogoro appears as a guest on a radio show where he discussed the topic of an obnoxious woman living in the apartment above the listener's. Radio producer and prime suspect Manda is taken to the police station for questioning, but Conan, believing the slick Manda couldn't have carried out such a carefully planned murder, suspects news presenter Inuyama and director Kujirai. He speaks with AD Rie, who tells him about the debut work of broadcast writer Kaede. While listening to a recording of the drama, Conan realizes something...