Yoko Okino and the Locked Attic (Part 1) Yoko Okino comes to the Mori Detective Agency and asks to solve a case at a villa. A few days earlier, Yoko and a producer from Nippei TV went to the villa where her sister had disappeared after she got married, and Yoko went with him for location scouting. Yoko and her sister's husband, her brother and his wife were also there. They decided to stay at the villa that night ....... Kogoro was about to share his theory when he had to go to the bathroom. Then Kennori Wakita of "Iroha Sushi" showed up.