Ep. 598: The Steaming Locked Room Scenario Part 2 Unveils the Culprit's Disguise and Motive

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Police find a plastic tea bottle, match cinders, and Tetsuyama's silver-gemmed ring in the dressing room, disproving suspect alibis. Conan impersonates Agasa to reveal that Junsaku Tanzawa disguised himself as Tetsuyama to enter the women's sauna. Tanzawa tricked the real Tetsuyama into staying all night to spy on Mishio Natori. The bottle and cinders prove Tetsuyama's presence, while his ring, stained by sulfur, confirms the murder occurred in the bath. Tanzawa's intrusion into the women's section, knowing only two children were present, exposed his prior knowledge. He confesses that Tetsuyama denied him a scriptwriting role out of fear. Later, Haibara, Ayumi, and Agasa appear; Haibara admits to placing chili peppers in Conan's underwear as revenge for his inappropriate comments about seeing them naked.