In Okazaki's room, Conan, Heiji Hattori, and Chiba were looking around.

"There doesn't seem to be any sign of intrusion," Chiba said after checking the locks on the exterior windows. "Conan, how's your side going?"

"There were no problems with the door and the window near the hallway." Conan replied.

"But she walked out on her own," Heiji Hattori said, looking at the phone landline. "While we were asking him to stay there, she left and went to the public toilet by herself.

"That's what I couldn't figure out," Conan said similarly, turning to the phone. "The only possibility is ......"

"Someone called her and somehow made her have to come out?" Heiji Hattori added.

"Or did he find out that the man was about to break in in a way he couldn't stop, so she fled in a hurry?" Chiba walked out of Okazaki's bedroom.

"Unlikely, right?" Conan shook his head. "If that's the case, why would she go to the public toilet? It's not a place to escape, and if I were her, I'd hide in a crowded place. ”

"That just means she's not dodging," Hattori Heiji walked over to the phone and began to press the button on the phone with his gloved hand. "Instead, under the guidance of someone she trusts very much, she walked over on her own initiative."

At this moment, Hattori's eyes suddenly became hot when he looked at the landline display. "There's a message!"

"Oh?" Conan immediately climbed onto the cabinet where the landline was located and looked at the landline as well. "Really, two messages!"

"Let's play it and try it," he said, and Hattori pressed the play button. "Let's see if there's anything you find."

"Come to Shinsaibashi now, and I'll let you meet your old friends." - According to the message, it was a message at 1:08 p.m.

"How's that, see? The next person to die is your turn. According to the message, it was 10 p.m.

"So it's clear that Ms. Okazaki went out after hearing the first message, and then came back and heard the second message, so she was so panicked when Officer Sakata called her?"

"But in that case, there's a problem," Conan said in a somewhat confused tone. "If Miss Okazaki was about to go out when she sent her first message at 1:08, she probably hadn't gone out at 1:10 a.m., right? How was the killer sure that Miss Okazaki would leave within two minutes and not hear the second message? ”

"That's right......" Chiba frowned. If she had heard the second message before she left, it would have given her about an hour or so of time to act for no apparent reason...... In that case, the murderer will have no way to control the trajectory of Okazaki Chengjiang's movements, let alone ensure that he can kill her? ”

"If it weren't for the fact that he was busy with what he was doing, so it was impossible to send a message later, it could only be that he had some way to monitor Okazaki's whereabouts, so he could be sure that Okazaki was gone by the time the second message was sent." Heiji Hattori concluded. "In other words, at one and eight o'clock, maybe he happened to be around here."

"One point and eight points here, if the murderer's mobility is set to be similar to Miss Okazaki's, then if the murderer walks back and forth, it is very likely that he and Miss Okazaki will only be able to maintain a speed, and it doesn't mean much......," Conan nodded. So the murderer must have used that automatic mechanism to intimidate Miss Okazaki Chenge, and then waited here for the rabbit, arranged it in advance, and then waited for Miss Okazaki Chengjiang to come back. ”

"If that's the case, there's a problem that can't be explained," Hattori Heiji said. "According to Miss Shui, the murderer arrived at the toilet quite late, and the wheezing sound was quite heavy - this is not at all like waiting for a rabbit, but more like rushing over?"

"Then where did this murderer's time go......" Qianyu frowned. The mechanism at Shinsaibashi where we ate was completely a corpse throwing mechanism that didn't need to be triggered by the murderer, and he didn't need to go there during this time...... In such a situation of waiting for the rabbit, he can also step on the point before he barely arrives? ”

"yes, that's what I can't figure out right now," Conan nodded. "These two actions of the murderer contradict each other, and I don't know how to explain it."

"Ah," Chiba suddenly let out an epiphany sound. "Wait a minute, I think about it, maybe ......"

With that, Qian Yu looked around and tried to make a phone call.

"Hello?" Fujiwara's voice came from the other side. "What's wrong?"

"Is there a murmur on my side?" Qian Yu asked.

"No, why are you asking that?" Fujiwara's voice was slightly confused. "Didn't you follow that black charcoal to search Aunt Okazaki's house? Why, do you suspect that there is electromagnetic interference over there? ”

"The main thing is that we have found a very subtle matter, so we need to find out if there is any more subtle reason to explain this delicate matter......" Qian Yu said helplessly. But if there's no noise, it means we're not thinking the right thing. Then I'll hang up first? ”

"Whatever, the transcription here is going to be over soon, and we'll go back to the hotel when it's over." Fujiwara said this, and heard Chiba on the other side hang up the phone.

"There's no bugging device or anything here," Chiba said as she looked around the room. "This murderer can't really be here all the time, right? In that case, why did he come back so late? ”

"This is the most central and most puzzling question," Hattori sighed. "If you can't explain this, there is no way to explain the logic of the murderer's actions in the whole thing."

At this moment, the sound of a siren appeared in the distance.

"The police are coming?" Qian Yu turned his head and turned in the direction where the voice came from.

Then, Chiba's cell phone rang - it was Gray Plains Wailing.

"Where are you?" Gray Yuan's voice came.

"I'm in the Xidu apartment, what's wrong?"

"You're such a mess!" Gray Plains said with hatred. "The murderer is there! No matter how strong you are, you're pretty insignificant compared to an adult with a murder weapon, right? ”

"Then why didn't you call me just now?" Thousand Feathers was speechless. "If something really happens to me, I won't be able to answer even if you call me now......"

"What if you were really facing the murderer just now, and I called you to distract you?" Gray Plains mourned no good airway. "I still confirmed that you were okay from Yuantai's side, and then I called you."

"Over here?" Chiba raised an eyebrow, walked out of the doorway, and then looked at the public toilet outside from the position of the building—if nothing else, Motota and Mitsuhiko had been staying in the public toilet since just now. And just now Gray Yuan Wai said "Yuan Tai's side", which also means......

Just between the public toilet and the building where Chiba was, Gray Plains was walking towards Chiba and staring at Chiba.