Original: “The Reunion with the Black Organization” A new transfer student, Ai Haibara (Shiho Miyano), arrives. She reveals she was the creator of the APTX 4869 poison. She also took the drug to escape the Black Organization. Now living as a child, she joins the Detective Boys. This episode marks a major arc shift.
Original: “A Haunted Mansion Murder Case” Conan and Ran visit a spooky mansion where a man dies under locked-room conditions. Conan solves it, revealing the killer used a fishing line and a tape recorder. This episode solidifies Conan’s method of knocking out Kogoro with a tranquilizer dart and speaking through his voice-changer.
A body vanishes from a crime scene. Conan deduces the killer moved it using a manhole and sewer system.
A woman is found dead in a ski lodge’s sauna. Conan proves it was murder via a delayed poison capsule. Detective Conan -Case Closed- -Season 1 Ep 1-28...
A wealthy family’s mansion is rumored to be haunted. Conan proves the “ghost” is a living person who murdered for inheritance.
A manga artist’s assistant is killed in a locked studio. The clue lies in a frozen fish and a manipulated time device.
On a bullet train, a businessman is poisoned. Conan uses the voice-changer to guide the police through the train’s intercom. Original: “The Reunion with the Black Organization” A
Original: “The Coded Map of the City Case” A radio show host is killed. Conan follows clues hidden in the radio broadcast, leading to a treasure hunt and a murder tied to a stolen lottery ticket.
Ran is kidnapped by a man seeking revenge on Kogoro. Conan tracks her to an abandoned warehouse and uses soccer-ball technology to rescue her. Episodes 13–20: Introduction of Key Characters 13. The Strange Person Hunt (The Junior Detective League Case) Conan is forced to join three nosy classmates: Ayumi Yoshida , Mitsuhiko Tsuburaya , and Genta Kojima . Together, they form the Junior Detective League (later the Detective Boys). They solve a case involving a stolen bank vault.
A wealthy woman is found stabbed in an elevator. Conan reveals the killer used an ice dagger that melted. Now living as a child, she joins the Detective Boys
A girl fakes her own kidnapping to test her boyfriend. The boyfriend ends up dead. Conan unravels the lie.
A man is run over. Conan proves the driver was distracted by a dog trained to run on command.
Original: “The Kidnapping of the Mayor’s Daughter Case” Now living as Conan, he struggles to convince Ran and Kogoro of his identity. He uses his first bowtie voice-changer (disguised as Kogoro’s voice) to solve the kidnapping of a mayor’s daughter via a phone call to the police.
Two-part episode (11–12) Conan is summoned to a remote island by a letter from a dead pianist. A series of murders follows the melody of Beethoven’s “Moonlight Sonata.” This case is emotionally heavy, as the killer commits suicide by fire. Conan later regrets not saving them. (Note: This episode is often cited as a fan-favorite.)