After saying that, Kisaki Eri looked at her colleague, whose expression had drastically changed, and smiled faintly. "Isn't that right, Attorney Saku?"
Attorney Saku panicked for several seconds before finally managing to compose himself. He forced out a somewhat stiff smile.
"Attorney Kisaki, why have even you started joking around with a child? The method you described is indeed feasible, but a little thought makes it clear that the risks are enormous.
"Jiang Xia was still in the room at the time, and nobody knew when he would wake up—if he woke before everyone found him and went to the door to leave, the tampered Door Chain would immediately be exposed before his eyes... Would any murderer really carry out such a risky plan?"
Kisaki Eri adjusted her glasses. A metallic glint swept across the frames like flowing water, and she revealed a smile that had once made many of her peers shudder. "Yes. And to prevent that situation, that self-righteous murderer added a little extra insurance for himself—this is why you chose the Telephone Line as the murder weapon, isn't it?"
"..."
As Attorney Saku's face turned deathly pale, Kisaki Eri continued unhurriedly, "Furthermore, moving Jiang Xia's phone away from him to the doorway, hanging a 'do not disturb' sign on the outer side door handle... This entire series of actions was meant to do everything possible to keep Jiang Xia from waking up too soon.
"Of course, the ring tone had another use as well: it helped us confirm that Jiang Xia was in this room, laying the groundwork for us to 'enter the locked room' and 'discover that Jiang Xia was the murderer.'"
Looking at the hateful murderer who had framed Jiang Xia, Conan could not help adding, "The moment we realized Brother Jiang Xia was missing,