Ye Gengyi withdrew his eyes from the chopping board, seeming to have some speculation in his mind.
He looked at the maid and said calmly: "You cook every day. Didn't you notice the amount of soy sauce yesterday?"
"Huh……"
The maid looked confused, obviously unaware of the problem. After being reminded, she said with some awareness:
"Yeah... there seemed to be a lot of soy sauce yesterday..."
"You just said that it was Miss Satake who told you that you have guests coming to visit today?"
Ye Gengyi asked: "Shouldn't it be Mrs. Wakamatsu who told you?"
The maid did not hesitate and answered directly: "That's because Miss Satake is Madam's secretary. After the master's death, all the work in the club fell on Madam. She is very busy at work every day, so it is usually Miss Satake who asks us Pass on Madam’s request.”
"Then the designer and chairman also came to visit every day after Mr. Wakamatsu passed away?" Ye Gengyi asked.
"No, only Mr. Shiina would come to visit every once in a while in the past. Mr. Fujinami only started coming here recently," the maid said.
At this time, the sound of footsteps came from the corridor outside.
I saw Takagi Shiba walking in carrying a box of cakes.
"Mr. Ye..."
He said hello to Ye Gengyi, walked to the table, opened the cake box and said:
"I just asked Mr. Shiina from the store where I bought the cake. This is a Baumkuchen of the same size as before. Miss Yonehara, could you please cut it into eight equal parts again."
"good……"
The maid responded, took out the plastic knife that came with it from the packaging box, and skillfully cut out a "rice" of the same size on the cake.
Immediately, she looked at a few people:
"If there's nothing else, I'll take the black tea to Madam's room."
"Well, go ahead."
Takagi Sheba motioned the police officer with his eyes to continue following him until both of them walked out of the kitchen, then he said to Ye Geng:
"Mr. Ye, according to the results issued by the forensic officer, none of the remaining seven cakes showed any toxic reaction..."
He paused briefly, originally intending to give Ye Gengyi a buffer time to be surprised. However, when he was stared at by those calm eyes, he could not hold back and immediately added:
"And that cup of black tea, a trace amount of toxins was detected in it, but it is speculated that it was left after the capsule melted. I heard that Mr. Ikuro was greedy and even complained that he was hungry at the time, so I still have the police department to think about "Look, could it be that when Miss Yonehara cut the cake, she deliberately cut the piece mixed with poison into a larger size?"
"Same size." Ye Geng gave the answer directly.
"Eh?" Takagi Sheba was a little surprised: "But I haven't compared it yet."
"You can see that kind of thing with your eyes... huh?"
Ye Geng frowned imperceptibly.
There is a way to increase the probability of the deceased taking one of the fan-shaped cakes.
"Mr. Ye?" Gao Mushe looked over strangely.
"Oh. I know how to poison." Ye Gengyi said calmly.
"Eh?! Really, really." Takagi Wataru was surprised.
"Fake." Ye Geng's eyes widened.
"Ah! Mr. Ye, I didn't mean that..."
Gao Mushe was a little panicked and hurriedly stood in front of Ye Gengyi, fearing that the other party would abandon him and leave the kitchen.
"Step aside……"
Ye Gengyi continued to stare at the other party with dead eyes, feeling quite speechless at Takagi Shed's behavior.
If he didn't want to take care of it, he wouldn't have brought up that topic just now. What was he doing? Worried about running out of the villa in a 100-meter sprint?
"...There is no need to go to the Memu Police Department. I don't want to explain one thing over and over again."
"Ah? Oh oh oh! I'm going right now!" Gao Mushe hurriedly turned around and walked out as if he had been beaten to death.
Ye Gengyi looked at Gao Mushe's back and rubbed his eyebrows.
He is serious and responsible about his work, but it is a pity that he is not suitable to be a criminal police officer.
He turned around, scooped up the two sliced cakes with a table knife, and arranged them in parallel. After waiting for a while, Mu Mu Shisan also walked over in a hurry. Before he could stop, he couldn't wait to ask:
"Brother Genichi, I heard Takagi say that you know the murderer's method of poisoning?"
"Well, police department, you look at this first."
Ye Geng nodded and turned sideways to give up the cake: "Based on the indentations on the cake on the dining cart at the murder scene, we can see that the last two cakes were arranged in this way."
"One piece is big...one piece is small..."
Megure Thirteen said suspiciously: "Isn't this too obvious? So, Brother Genichi, do you mean that the murderer is Miss Yonehara, the maid who helped everyone cut the cake?"
"The two cakes are the same size. This is Jastrow's illusion." Ye Gengyi said.
"Ja...Ja what?" Mumu Shisan had a question mark on his head.
"Simply put, the principle is that the human visual system's perception of the size, shape and position of objects is relatively dependent on the surrounding environment. So when seeing two objects, the brain will automatically compare a certain part of them as a reference. This creates an illusion.”
Ye Gengyi pointed to two pieces of cake and said as an example:
"For example, these two sectors appear to be of different sizes. In fact, their length and curvature are the same. The murderer only needs to poison the larger one to increase the probability that the deceased will eat it. Of course, this probability is not 100%.”
When he was explaining, Takagi Wataru also curiously picked up one piece and stacked it on top of another, and said in surprise:
"It's really the same size!"
"Um……"
Megure Thirteen's performance was obviously much calmer than that of Takagi Wataru, and he said after a moment:
"According to their testimony, the person responsible for plating the cut cake was the secretary, Ms. Satake, so she must be the murderer, but the problem is that there is no evidence, right? After all, the capsule used for poisoning has been dissolved in the black tea. "
"Police department, have you been with the detective for a long time?" Ye Geng said with a blind eye.
"Eh?" Mumu Shisan was startled.
"This kind of probabilistic killing method itself is difficult to leave evidence, so we only need to issue a report that the poison residue in the corpse's stomach and the black tea are the same, and we can locate the murderer in the living room. The maid can place the poison The cake was left behind, but the location of the plate cannot be determined... Of course, the possibility that she is an accomplice or planning to kill randomly cannot be ruled out..."
Ye Gengyi took out a breath. After saying so many words, he felt like drinking coffee, but he still finished the key part:
"Since that secretary is suspected of murder, police department, you can extract some sebaceous gland secretions and sweat from her hands to check her identity and use some false confession methods."
Megure Thirteen, who has followed Kudo Yusaku and Kudo Shinichi to solve crimes since he started his career: "..."
Wataru Takagi, who has followed Kogoro Mori and Conan Edogawa to solve crimes since he started his career: "..."
Could this still be possible?
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(End of chapter)
