Ran is almost attacked by "The Hooded Man" after staying late at school for her extracurricular activities, but defends herself. A scream is heard and Conan correctly deduces the man to be the aforementioned criminal who is arrested. They manage to save his latest victim, Mizuki Tachibana, but her friend, Yoko Katsuragi, is found bludgeoned to death, allegedly by the same man. He denies involvement but the similarities in the previous cases are too great to ignore.