The episode centers on a trip to a remote village where Shinichi is accused of committing a brutal murder with a knife. The narrative unfolds after Conan Edogawa accidentally consumes a prototype antidote provided by Ai Haibara. The Identity Crisis:
For English-speaking audiences, Episode 521 is available under Case Closed branding. However, note that Funimation and Crunchyroll use different episode numbering. The "Murderer, Shinichi Kudo" arc covers . They are often bundled as a single movie-length special in some streaming services.
While the murder mystery itself is a classic locked-room puzzle, the true genius of lies in its secondary, far more dangerous plot. This episode marks the first significant appearance of a new Black Organization operative codenamed Bourbon . Detective Conan Episode 521
Here’s a useful viewing guide for — part of the Desperate Revival arc (Episodes 521–523, though 521 is a standalone recap with new framing).
Have you seen Detective Conan Episode 521? Share your thoughts on the Bourbon reveal and Ran’s reaction in the comments below! The episode centers on a trip to a
When Ran learns that "Shinichi" has supposedly killed someone, her internal conflict is heartbreaking. She refuses to believe the boy she loves is a murderer, yet all evidence points to him. The episode’s climax—where Conan, in a desperate gamble, temporarily takes an experimental antidote to the APTX 4869 poison to appear as Shinichi in front of the police—is iconic.
The story begins on a seemingly normal day at Teitan High School. Ran Mouri, Sonoko Suzuki, and their classmates are preparing for a school festival. However, the mood is shattered when a murder occurs. The victim is a teacher, but the shocking twist comes when the fingerprints on the murder weapon are identified as belonging to —a boy who has been absent for months. However, note that Funimation and Crunchyroll use different
Suddenly, the police issue a warrant for Shinichi’s arrest. Conan, trapped in his child’s body, is horrified. He cannot reveal himself without exposing his secret, yet if he does nothing, Shinichi Kudo’s reputation will be destroyed, and Ran’s trust will be shattered.