In the international (Italian) numbering, often refer to the massive 2-hour special originally aired in Japan as Episode 129. This is one of the most important arcs in the entire series because it introduces Ai Haibara .
In Italy, the international numbering for Detective Conan differs from the original Japanese broadcast. Depending on the version you are watching, these episodes cover two major, high-stakes cases: Stai guardando DetectiveConan Ep 136-139 ITA
The arc concludes with Conan, Ai, and Professor Agasa attempting to recover data on the APTX 4869 from a floppy disk, only for the "Night Baron" virus to delete everything before they can read it. Case 2: The Old Blue Castle Investigation In the international (Italian) numbering, often refer to
