Kogorō is interrogating the mysterious man that have been following before. Kogorō takes away his glasses, which the mysterious man got the same eyes as a female, which he and Conan laughs at his, and Ran standing up for him. Afterwards after Kogorō got hit many times by Ran due that he was still laughing about the mysterious men's eyes, the men then tells him that there is something funny about the Hirota family. He then shows Kogorō a picture of the men, which also telling many strange things that happened in the Hirota Family. Conan then starts to think that Akira Hirota might have killed Masami Hirota. Conan then rushes to Professor Agasa to get his glasses charged. Conan and the others are heading to where Akira is, while they are helping a lady with her suitcases. When they arrived at the room of Akira, they've seen that he is killed through poison + his briefcases are all open. Kogorō called Inspector Megure, knowing that Akira was a bachelor and never evenly have a daughter. Conan seems to figured out the case already.