Fujita shows Sara a rare revolver music box. Later, Endo Takuto, the CEO of InterWorld receives a delivery of a revolver music box which explodes after he opens it. Suddenly, Fujita is taken in by the police as his fingerprints are found on fragments of the explosive device. Meanwhile Sarah encounters Gotou Takuya who had bought a music box from the gallery, but it is broken. She takes him to Senjudou (Senju Hakaru) to repair it. The police tell Fujita that the explosive package was sent by Gotou Mayumi. After Senjudou repairs the music box, Takuya invites them to see his collection. Fujita confirms that the explosive was the antique music box that had been in gallery fake. The police trace the sender to Gotou Mayumi, but she died a month ago. Takuya invites Senjudou and Sara to see his collection, however he kidnaps Sara and plans to kill her and himself by exploding the music box he bought. It was one of a pair which his father Endo had bought for his mother although he was married to another woman at the time. Fortunately Fujita and the police arrive in time and Fujita throws the music box out of the window before it explodes.
突然、警察に連れていかれるフジタ。爆死させられた会社社長の現場に残された爆発物の破片に、フジタの指紋が残っていたのだ。その爆発物は、ギャラリーフェイクにあったアンティーク・オルゴールだと確認するフジタ。
その頃サラは、以前店でオルゴールを買った男・卓也と再会していた。オルゴールが故障して困っているという卓也に、千手堂の計を紹介するサラ。卓也はオルゴールを直してくれたお礼にと、サラと計を自分のオルゴールコレクションが並ぶ自宅へと招待するが…。
