Conan's heart sank.
No wonder Jiang Xia had barely spoken today and seemed uninterested in solving the case. He had merely been following his request and ensuring that Shitara Renki was not killed... Could it be that he had already seen the hidden circumstances behind this case?!
"Could there really be a killer who could erase all evidence completely without leaving the slightest trace...?"
For a moment, Conan could hardly believe it. He repeatedly ran through the chain of events in his mind. "Haga Kyosuke has perfect pitch and is a genius musician. There's no way a Violin that passed through his hands could have been swapped with a fake... unless he himself was the one who made the switch.
"As for Shitara Renki and the housekeeper, who touched the Violin after him, neither of them could have made the old lady 'accidentally fall to her death' from the 3rd Floor.
"Based on my deduction, Haga Kyosuke probably swapped the genuine article with the fake when he was tuning it. He hid the Stradivari Violin in his car and handed the fake to Shitara Renki—the Violin Miss Renki showed us after Jiang Xia brought us here.
"If any one of us outsiders had touched that Violin then, we could have identified the person who swapped it... Unfortunately, none of us did."
After regretfully scratching his head for a while, Conan continued following his train of thought. "Then the Villa caught fire. The fire started in Shitara Gensaburo's bedroom, caused by an unextinguished cigarette butt. On top of that, the bedroom was a locked room, so the police and firefighters all believed it was an accident.
"But locked rooms can be fabricated.
"If it were me, I'd wait until Shitara Gensaburo was sound asleep, sneak into his room and light a