Conan is on his way to the park with Genta and Mitsuhiko when he hears two women screaming. They head for the house where they heard the voices and find Kaoru Hirasawa and Seiko Hirasawa lying on the floor after falling down the stairs. From a conversation with Ryoji Hirasawa, who came later, they are his wife and mother-in-law, and Ryoji is the son-in-law of the family. It seems that they are just trying to get Ryoji in trouble. Later, Conan and the others see Ryoji struggling near the park as well. Ayumi says that there is a lot of talk about the Hirasawa family in the neighborhood...