Popular comic writer Chinami Koishikawa (Akina Nakamori) suffocates her editor Hatano (Narushi Ikeda) in the underground safe room of their shared villa. Furuhata and Imaizumi, who happen to be stuck in the rain because their car ran out of gas, make a visit.
人気コミック作家・小石川ちなみ（中森明菜）は自分を弄んだ編集者・畑野（池田成志）を別荘の地下倉庫に閉じ込め窒息死させる。そこへ偶然、雨の中で車がガス欠になって立ち往生した古畑と今泉が訪れる。
