"Excuse me, have you ever eaten the snacks brought by Sihuayuan?"
"Excuse me, are you dissatisfied with your boss?"
"Do you want to usurp the throne?"
"Do you want to surpass your boss in reasoning?"
"Excuse me, if your boss is away, are you doing your job well?"
Except for the first and third questions, which were silent, the other three questions all had reactions on the electronic screen in front of Tang Ze.
Seeing that Karasawa was still planning to continue asking, Nanatsuki Koshimizu, who was sitting on the chair, had already taken off the finger clips on his body and the sensor on his head with a dark face.
"I think you're teasing me on purpose!" Koshimizu Nanatsuki said frantically.
"I am fully aware of what I am asking you."
Tang Ze said with a smile: "Sometimes I disappear for several days. If you have any dissatisfaction, you will definitely have it. There is nothing to be embarrassed about."
As for reasoning better than me, that's a good goal and I hope you keep it up."
"I shouldn't have been fooled by you!"
Even after hearing Karasawa's comforting words, Koshimizu Nanatsuki still rolled his eyes and said angrily.
Although the words were true, the two of them knew these emotions well, and even Koshizui Nanatsuki showed them openly every time he came back.
But it still makes people feel embarrassed to have their little thoughts revealed by a lie detector test like this.
"Now you have experienced the power of science." Tang Ze said with a smile: "Okay, let's see if our four suspects can bring us some clues to solve the case later."
Because there were four testers in total, they did not wait to test together, but whoever came first would be tested first.
After contacting four people, the first person to arrive was Eiko Mihara, the first discoverer of the case.
"This investigation is a test conducted in order to find the murderer of the Shanshui Mingqiu case as soon as possible."
Looking at Mihara Keiko in front of him, Karasawa explained: "We will ask you 15 questions, some of which are related to the case, and some of which are unrelated.
You just have to answer "no" to them all."
"I understand." Mihara Keiko, who was wearing a blue skirt, nodded lightly to express her understanding.
"Then is there anything else you don't understand?" Tang Ze asked.
"If the polygraph results show that I am lying, will you arrest me directly?" Mihara Keiko looked at Karasawa and asked.
"We only use machines to assist in investigations, not to solve cases." Tang Ze smiled and said, "These investigations are for reference only."
"I understand, that's fine." Mihara Keiko smiled and said, "Come on."
"Then let's get started." Karasawa smiled and immediately asked the first question: "Is it raining in Tokyo today?"
"No."
"When you killed Shanshui Mingqiu, was the murder weapon used a knife?"
On the polygraph screen, the lines were still smooth.
"no."
"Do you know the person who killed Shanshui Mingqiu?"
When this question was asked, although Mihara Keiko's face was still calm, Tang Ze could see a little unnaturalness and her pupils were a little turbulent.
Tangze looked at the lines on the screen, and as expected, they began to climb higher, which was very different from the previous flatness.
But Tang Ze did not pursue the other party's question, but continued to ask follow-up questions.
After the polygraph test, Tang Ze did not force the other party or ask the other party to speak, but watched the other party leave.
"Senior..." Koshimizu Nanatsuki looked at Mihara Eiko who was leaving with an expression that was hesitant to speak.
"You want to ask me, why don't you continue to ask her?" Tang Ze said with a smile.
"Then there is obviously something wrong." Koshizui Nanatsuki said, "She is protecting someone."
"Sometimes the machine may not be right, so I tell you to control the tool." Tangze smiled.
As he said before, they only use machines to assist in investigations, not to solve cases.
Therefore, they will not use the polygraph results for further interrogation.
If you rely on machines from the ground up, then your judgment is no longer objective, and you are likely to get a wrong answer.
When subjectivity begins to rely on machines, you will be controlled by machines unknowingly.
He realized this when he conducted a brain fingerprint test on the amnesiac "Arashiyama Man" in Kyoto.
Because people are complex individuals, they continue to make cognitive mistakes throughout their lives.
Therefore, the machine can only feed back the concept of individual subjective consciousness, and cannot judge whether this concept is right or wrong.
Even if Mihara Keiko showed the reaction that she might know the prisoner when she answered the question, she might just think he was the prisoner.
Therefore, it cannot be concluded that Mihara Keiko saw the murderer. What they have to do is to use this information to restore the truth of the case.
After the truth confirms what you did in this, Tang Ze and others will ask again, and the other party will naturally tell everything they know honestly.
What Tang Ze and others have to do is to identify the authenticity of the intelligence and finally arrest the criminal.
Karasawa told Koshizu Nanatsuki what happened in Kyoto, and the other party finally understood Karasawa's thoughts.
Shortly after Mihara Keiko left, Koga Kenji was the second to arrive at the Metropolitan Police Department.
After being equipped with a polygraph, Kenji Koga reacted similarly to the question "Does he know the murderer?"
Faced with this result, Tangze continued to ask without any emotion: "Did you steal anything from Shanshui Mingqiu's store?"
Hearing this question, Koga Kenji's eyes blinked repeatedly and his breathing began to become slightly faster.
Along with his answer, the lines on the lie detector screen climbed higher again.
In this regard, Karasawa just recorded the facts and continued to ask, and the test was soon changed to a third person, the deceased's wife, Sansui Eri.
"Is the murder weapon that killed Shanshui Mingqiu a tie?"
"no."
"Is the murder weapon that killed Shanshui Mingqiu a vase?"
At this moment, Shanshui Eri's lips twitched slightly when she heard the question. Although she denied it, the instrument truthfully recorded the various indicators of her climb.
After seeing this result, Koshimizu Nanatsuki changed from understanding to understanding.
Because they dissected the body and confirmed that the body was strangled with a tie, but Shanshui Eri's cognition reacted to the vase, thinking that the vase was the murder weapon.
But both were "correct answers" on the polygraph, and it did test that the other person was lying.
This is an error in cognition, which leads to errors in the results. If you are completely new to the machine, you will only get wrong answers in the end.
Fortunately, at the last exchange meeting, he used "Arashiyama Amnesia Man" as an example to encourage criminals everywhere to use machines objectively.
Otherwise, this new type of lie detector may cause a lot of troubles to criminal cases in various places because of its accurate and powerful functions.
And in Koshizu Nanatsuki, he realized that he had gained a confidant, and soon it was the turn of the last Mr. Hiroki Takase.
Faced with the question "Is the murder weapon that killed Shanshui Mingqiu a vase?", the other party seemed to have no trouble at all.
"Was the murder weapon used to kill Shanshui Mingqiu something like a belt?"
Although the answer was still negative, the instrument fluctuated.
Karasawa glanced at Takase Hiroki and continued to ask: "In addition to killing Shanshui Mingqiu, have you killed anyone else in the past?"
This was originally an issue unrelated to the case, and the other three people also passed it peacefully.
But in Takase Hiroki's case, his reaction was a bit violent.
The trembling eyes and fingers, the rising heartbeat, everything showed that the other person seemed to have had an unusual experience.
And they didn't expect that this fixed question included in the polygraph test would actually screen out a criminal suspect who might have killed someone.
When I chose this question at the time, I just thought it would be possible to check whether one of the suspects had killed anyone before and was a potential murderer who had not been exposed.
It can be regarded as a fixed rough inspection process.
But even Tangze didn't expect that not long after this issue was finalized, they actually discovered someone who might be a problem among the suspects in a case.
However, Tang Ze still did not detain the other party, but watched the other party leave after completing the polygraph test.
"Aren't you going to keep this one too?"
Koshizui Nanatsuki looked at Takase Hiroki's back and said: "The question just now must have alerted the snake. What should I do if he runs away?"
"If he ran away and it proved that he was the murderer, it would save trouble."
Tang Ze smiled and said, "Also, just because I asked him to leave doesn't mean we can't go there.
Don’t forget that he is still one of the suspects in the case. It’s not illegal to send someone to watch him, right?”
"That's what I'm saying." Koshizui Nanatsuki laughed when he heard this: "This situation has already happened, and you still abide by the rules. That's too rigid."
"This question was added to screen out murderers hiding in society who have evaded justice."
Tang Ze heard this and said: "Now that we have discovered a case, we naturally cannot let it go.
Of course, other situations cannot be ruled out, so the investigation of his possible murder will be left to you, is that okay?"
"Put it on me." Nanatsuki Koshizu patted her and promised with a smile.
Judging from her eagerness to try, it was obvious that she was interested in this "murderer" who was found out by the polygraph.
After Yueshui Qigui left, Tang Ze also looked at several questions that the four people responded to during the polygraph questioning, and began to sort them out gradually.
After all, the questions are the same, but the responses of several people are different, which shows that their perceptions are different.
And he also needs to eliminate some wrong options and further narrow the scope based on the current intelligence.
First of all, Hiroki Takase and Eiko Mihara reacted to the tape. This alone raised their suspicions.
Because after an autopsy, it was confirmed that the deceased was indeed strangled.
But they haven't found the specific murder weapon yet, and another question is.
Normally, only the murderer knows what he used to kill people, but now two of them reacted to the murder weapon "belt".
This situation can be divided into many situations. One is that the two committed the crime together, so they naturally knew the murder weapon and the method of killing Shanshui Mingqiu.
The other is that two people committed crimes one after another. The first person thought he killed Shan Shui Mingqiu, but in fact he did not.
After Shanshui Mingqiu woke up, he happened to meet the second prisoner again. The other prisoner learned that Shanshui Mingqiu was almost strangled, so he continued to kill the other prisoner, hoping to inflict the crime on the third prisoner in a "free ride" way.
On a prisoner.
Therefore, while the suspicion of the two people is further raised, further investigation is required to know who is the real culprit.
Of course, if there are people who are under suspicion, there will be people who are cleared of suspicion.
The deceased's wife, Eri Sansui, reacted to the question "Is the murder weapon a vase?"
If the murderer was killed by a vase, he would be a criminal, but unfortunately he was not, so at most Sanshui Eri was charged with intentional wounding.
Finally, there is Koga Kenji, who reacts to the issue of theft. Considering the envelope that Koshimizu Nanatsuki once found, maybe he stole that envelope.
In the polygraph test, they may each be suspected of committing a crime and did something to the deceased in the bar on the night of the crime.
However, their suspicion of murder was reduced, and Tang Ze even realized that there might be someone else who was the real culprit.
Because none of the four of them responded to one of the 15 questions.
No matter it is breathing, skin charge, blood flow, pulse, brain waves, or pupils, there is no obvious reaction in any of them.
And that question asked, "Did you strangle Shanshui Mingqiu to death?"
In other words, the four people may have done something, but none of them strangled the lion's neck. From this point of view, the four people may not be criminals.
Of course, there is also the issue of reactions from all four people.
And the question is "Do you know the person who killed Shanshui Mingqiu?"
In answering this question, all four people responded.
In other words, all four of them probably knew the murderer of Shanshui Mingqiu.
However, there was no prisoner among these four people.
It was obvious that this situation was caused by a cognitive problem among the four people.
Just like "Arashiyama Man" had an impression of an unknown female reporter, it was actually not because of her, but because the work badge sling around her neck was the murder weapon, so she reacted.
But before they realized it, they even thought the instrument was broken.
And the situation that will cause this paradox this time must be a similar reason.
Because everyone's cognition is different, there will be conflicts when all the answers are put together.
Of course, in addition to these gains, there is the fact that Hiroki Takase may have killed other people, and the other party's reaction was as if he had really killed someone else.
As for whether it was an accident or a hidden murderer, it depends on Koshimi Nanatsuki's follow-up investigation.
At this point in the investigation, the advancement of the case has temporarily come to a standstill.
After all, they have too many things to investigate, and these all take time.
Although the case is important, it is only part of the job. Even after dark, you have to go home from get off work and eat.
And early the next morning, all the things that I worked hard to investigate the day before came to fruition.
Karasawa and Takagi also took this investigation evidence and brought Koga Kenji back to the interrogation room and began to interrogate him.
This chapter has been completed!