A murder happens every time the curtain rises. Kindaichi walks into a locked theater where the killer is performing the same role night after night, and the only way out is to find him before the next body drops. The Phantom of the Opera becomes the perfect cover for a killer who knows the script better than anyone, which means Kindaichi has to solve the case while the play keeps going, actors keep dying, and nobody can leave until it's over.
Kindaichi returns to the grand Opera House for a celebration, only to find himself walking straight into a nightmare. A theatrical production of "The Phantom of the Opera" is in rehearsal when cast members begin turning up dead, each murder staged with the killer's twisted theatricality. The deaths carry the signature of the legendary Phantom, but questions pile up faster than answers: Is this a copycat killer playing with fire? Or has the original murderer returned to finish unfinished business? Trapped within the ornate halls where music echoes through shadowed corridors, Kindaichi must separate theatrical performance from brutal reality. Every actor becomes a suspect. Every prop becomes a weapon. Every curtain hides a secret. The detective's razor-sharp mind faces its greatest test yet as the body count rises and panic spreads through the troupe like poison. This is mystery wrapped in gothic atmosphere, where a supernatural legend becomes cover for all-too-human crimes. Kindaichi must unmask the killer before the final curtain falls.