She explains that she is the creator of , the very poison that shrunk Shinichi Kudo. After the Organization murdered her sister, Akemi, Shiho took the drug herself to commit suicide but instead shrunk in size, eventually seeking out Shinichi (Conan) for help. The Search for the Disk
The episode concludes with a haunting moment: Haibara breaks down in tears, confronting Conan about why he couldn't save her sister, Akemi, despite his great detective skills. This emotional climax cements Haibara as a permanent, tragic ally in Conan's fight against the Black Organization. Detective Conan (Dub) Episode 129
Conan deduces that the "locked" door was a trick involving a cassette tape and a heavy dictionary. She explains that she is the creator of
Haibara reveals that a floppy disk containing crucial data about the drug—and potentially a cure—might be hidden at the home of , a university teacher she once stayed with. Conan, sensing a chance to regain his true form, rushes with Haibara and Professor Agasa to the professor's house. The Murder Case This emotional climax cements Haibara as a permanent,