The mystery unfolds inside a concert hall where every note matters, where a Stradivarius violin and perfect pitch become weapons in a killer's hands. Classical music isn't decoration here, it's the language of the crime itself, which means you're solving the puzzle alongside Conan instead of just watching him solve it. Akiba Reiko doesn't feel like a sidekick dropped into the case; she belongs there, and that changes how the investigation breathes. If you've watched enough Detective Conan to know the formula, this one breaks it by making the music the actual suspect.
A prestigious music hall opens with fanfare and a world-class performance. The star attraction: a priceless Stradivarius violin and a legendary singer blessed with perfect pitch. But the celebration masks something darker. A string of murders connects back to the music school's elite circle, each victim tied to its renowned pianist director. Conan finds himself caught between the orchestra pit and a killer's crescendo. The concert becomes a locked-room mystery where every attendee has motive and means. Conan must piece together the connections between the victims while watching for the killer who still prowls among the audience. The music itself becomes a clue, melodies and compositions hiding secrets about past rivalries, betrayals, and obsessions that run deeper than any artistic passion. What starts as an evening of high culture transforms into a race against time. The killer operates with methodical precision, turning the concert hall into a stage for their own twisted finale. Conan has hours to identify the murderer before the last note plays.