Detective Conan (dub) Episode 129 Apr 2026

Conan deduces that the "locked" door was a trick involving a cassette tape and a heavy dictionary.

In the English dub of Detective Conan (Case Closed), is titled "The Girl from Black Organization and the University Professor Murder Case" . This pivotal episode marks the first appearance of Ai Haibara , a character who fundamentally changes the trajectory of the series . The Mysterious New Student

The story begins with the arrival of a stoic, mature girl named in Conan’s elementary school class. Initially appearing as just another transfer student, she surprises Conan by revealing her true identity after school: she is Shiho Miyano , a former scientist for the Black Organization code-named Sherry . Detective Conan (Dub) Episode 129

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

He identifies one of the professor's students, Akira Shirakura , as the killer. Shirakura had murdered the professor to prevent the release of incriminating photos and tried to stage the scene as an accident. The Bitter Aftermath Conan deduces that the "locked" door was a

Upon arriving, they find Professor Hirota dead inside a locked room, surrounded by fallen books. The local police initially suspect a tragic accident or a robbery gone wrong. However, Conan’s keen observation skills reveal a much more calculated crime:

While the murder is solved, the victory is hollow. In the chaos of the investigation, the floppy disk containing the drug data is accidentally formatted or lost, destroying Conan’s immediate hope for a cure. The Mysterious New Student The story begins with

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