Detective: Open your eyes, I am handcuffed in the interrogation room.

Chapter 604 Abnormal Woman
The Jingcheng case is more difficult than the Jiangcheng case.

The big point is that no new cases have emerged in the Jingcheng case, and the investigation coverage has reached 99%, making it difficult to find a breakthrough.

However, Chen Yi already had a rough outline of the murderer, and needed clues to fill in the details.

A father avenges his daughter.

Combining the personalities of the three victims and human nature, this is the biggest possibility at the moment.

The next afternoon, in less than a day, the information had been retrieved. The operation was very simple. In the age of electronic information, you can use a computer to supplement your student information and then screen based on keywords.

Student records are basic citizen information, linked to the ID card, and are public information to the police.

The victim, Qiao Rui, had tens of thousands of alumni among the 65,000 patients, including elementary school alumni, middle school alumni and university alumni. After excluding those over the age of 31 and under the age of 19, there were still 4,000 people left.

Of the four thousand people, three thousand were women.

Most of them are from primary and secondary schools, and there are only eight alumni from universities because Qiao Rui went to university in another place.

Among the eight people, five are women.

The proportion of people with depression, including mild depression and men, is about 3%, or 120 people.

Three percent is not a low proportion. It does not include those who did not come for treatment or those who went to well-known hospitals in other places. This shows that the lives of a considerable number of young people are not so good.

In six years, Xiang Shu has treated a total of ninety young women with depression, who were of the same age, gender, and school.

After getting the data, Chen Yi immediately gave an order: "Coordinate 18 investigators, two people in a group, each group is responsible for 10 people, and interview them in person. You must see the person in person and make sure he is still alive."

Chai Ziyi: "Don't worry, Chen Xun, there will be no mistakes. I will make the arrangements first."

After Chai Ziyi left the special case team's temporary office, Chen Yi focused his attention on the remaining 3,900 people.

Again, depression is just a guess. If A exists, it is unknown whether she is depressed or not. She may have other diseases.

"On balance, A is definitely a woman...but the possibility of a man cannot be ignored."

Chen Yi touched his chin, which felt noticeably frosted; he had forgotten to shave that morning.

"Should we contact them again by phone, or should we mobilize police forces to conduct a comprehensive visit?"

There are 3,900 people. If we see ten of them a day, it will take 390 days. This time can be shortened by using the number of police officers. If there are 7,000 police officers, theoretically they can be seen in one day.

Even if you go to another place, you can ask the local police to assist in the investigation.

But does A really exist? Is she really on Xiang Shu's patient list?

While thinking, Chai Ziyi returned and the order had been issued. The ninety people would complete the visit within a few days. The purpose of the visit was to determine whether the person who answered the phone before was the real person.

This is the second blind spot in this case that is not considered an investigative blind spot. Chai Ziyi did a very good job back then. He made calls to more than 60,000 people one by one to look for potential medical accidents. He was very decisive.

"Chen Xun, I have a question." Chai Ziyi said.

Chen Yi casually swiped the computer to scan the list: "Go ahead."

Chai Ziyi: "If 90 patients with depression are alive, it seems that they cannot be ruled out as suspects? Because there is a possibility that depression killed someone but the murderer did not commit suicide. I checked the records and there are no young women who died abnormally."

Chen Yi turned around and asked: "Chai Zhi thinks the murderer might be a woman?"

Chai Ziyi: "Of course the possibility of a boy being the most likely, but..."

Chen Yi: "I understand what Chai Zhi meant. It is difficult for a woman to kill three adult men in a row, and she did it by hanging. But it is theoretically possible. However, every step we take now may be wrong. It is a process of trial and error, so don't think too much about it for now.

To borrow a phrase: make bold assumptions and verify them carefully. "

It is impossible for the investigators to have exactly the same ideas. Chen Yi will not impose his own judgment on Chai Ziyi. The other party is also worried about wasting time. After all, they have been investigating for so many years and are worried about gains and losses.

But the probability that the murderer is a woman is very low in his opinion.

It can even be said that he was certain that the murderer must be a man.

As the leader of the special case team, Chen Yi has the right to decide the direction of the investigation, but he cannot say this explicitly. He is quite willing to make friends with Chai Ziyi.

"I understand." Chai Ziyi nodded and asked, "How should we deal with the remaining 3,900 people? Should we call them or visit them in person?"

Chen Yi: "If we visit in person, how long does Chai Zhi estimate it will take?"

Chai Ziyi thought for a long time and replied: "We will draw police forces from various sub-bureaus and police stations to cooperate, including auxiliary police, and under the premise of ensuring the normal public security in the city... there will still be 500 to 600 people."

It is normal to coordinate 600 people to investigate a major serial murder case. If it is not enough, more people can be transferred from other cities.

In the 1980s, in order to investigate a serious shooting case, the Imperial City mobilized 30,000 police officers across the country. It took seven months to solve the case, and a carpet search was conducted during the arrest.

The more serious the case, the higher the level of attention it will receive. In contrast, it is impossible for the police to dispatch a large number of police forces to help search for someone's mobile phone or electric bike being stolen.

Chen Yi weighed the issue for three seconds and decided: “We’ll wait for the results of the interviews with ninety people first. If there is no result, we’ll start a comprehensive interview and everyone must see it.

This time, we will use the human wave tactic. If the police force is insufficient, we will send letters of assistance to surrounding cities in the name of the special case team."

Chai Ziyi accepted the order: "Yes!"

……

The time came three days later.

The results of the interviews with ninety people have come out. There is nothing unusual, all of them are alive and well, and no one said they knew Qiao Rui.

At that moment, Chai Ziyi immediately notified all the police stations and branches in Jingcheng, and mobilized a total of 580 people in one day to conduct a comprehensive visit to the 3,900 patients.

Work in pairs to ensure no one is left out.

If you have moved to another place, you can drive to a nearby city, or ask the local police to assist in the investigation in a far city. Be sure to meet them face to face and ask in detail whether they know Zhang Wenyang and Qiao Rui.

Before the mission began, Chai Ziyi provided all investigators with a written note of caution: the people they were visiting might lie, so they had to observe each person carefully, capturing the subtle changes in expression and tone, and keeping good records.

It is mainly to remind the police officers in the police station that they lack experience in investigating serious cases and are prone to making mistakes.

During this period, He Shixin and others reported real-time investigation results one after another.

First is the item tree.

Doctor Xiang Shu has good medical ethics, and there are no errors recorded in the files. Almost all colleagues and patients have positive comments about Xiang Shu, and the remaining few negative reviews are highly subjective.

No matter how perfect it is, there is no guarantee that everyone will like it, unless it is a hundred-dollar bill.

In terms of business, Xiang Shu worked very hard. After joining the Economic Development Zone Hospital, he was promoted from attending physician to deputy chief physician in five years. He has a bright future. If he has certain medical research results in the future, he will become one of the few chief physicians in the Economic Development Zone.

In addition to these, He Shixin also investigated whether Xiang Shu had any misdiagnoses during his work, which led to adverse consequences but were not recorded.

The probability of misdiagnosis is already very low. With the current level of medical care, it is almost impossible to occur as long as the doctor performs his duties conscientiously.

To put it simply: I may not be able to cure you, and I may not know what disease you have, but once I make a conclusion, I will never make a wrong diagnosis.

The doctor is still very cautious in this matter.

And if you don’t understand, you can ask seniors.

Some people who cannot get an appointment with the chief physician will choose to see a very young attending physician. This is because young attending physicians have little experience and dare not speak carelessly if they encounter complicated conditions, and then take the initiative to ask senior doctors in the hospital.

You make an appointment with a director and he will treat you.

If you make an appointment with a attending physician, and if you are lucky, several directors may come to see you, which is equivalent to a consultation in an outpatient clinic.

Therefore, the motive of Xiang Shu being killed due to misdiagnosis can be ruled out.

"Oh, what a pity."

He Shixin lamented Xiang Shu's death, which was a loss for the Economic Development Zone Hospital and the national medical system.

It seems that he heard a lot about Xiang Shu in the hospital and was moved.

Zhang Wenyang's interpersonal relationships are a little complicated. As a dance teacher, he knows people from all walks of life. Everyone's evaluation of Zhang Wenyang is pretty good. Although not as rave reviews as Xiang Shu's, at least no one scolds him for something.

What surprised Chen Yi was that Teng Dabin and Su Ying actually found something that was not in the file. It turned out that the combination of men and women had miraculous effects, but it was not of much use for the time being.

"Zhang Wenyang is eligible for recommendation for the Peach Blossom Award Dance Competition. Not many people know about this, so we must ask specifically and ask the right person to find out." Su Ying reported.

Teng Dabin affirmed Su Ying's investigative ability: "Forensic doctor Su is still a bit good. He said that apart from murders of passion, other murders with clear targets and male victims must be traced back to interests.

So, she wanted to find out whether a professional dance teacher had certain social resources.

It is definitely impossible to have money, that Chai guy has already found out everything clearly. "

"Call Chai Zhi or Captain Chai! Put away your gangster spirit!" Chen Yi reminded him. Different trades are like different worlds. He had never heard of this competition: "Peach Blossom Award?"

Su Ying explained: "The Taohua Award is one of the top competitions in the domestic dance industry. There are certain requirements for registration. I have asked several girls who study dance, and they all have the dream of participating in the Taohua Award. Even if they are just runners-up, they can gain a certain degree of fame.

Zhang Wenyang has connections who can recommend entries for the competition. As long as he recommends, he can be selected to participate. I don’t know whether he has recommended entries over the years. We need to check with the competition committee.”

Hearing this, Qin Fei said, "Sister Su, is this clue helpful to the case?"

Su Ying: "I don't know. One more clue won't hurt. Let me tell you a possibility: someone asked Zhang Wenyang to recommend him to participate in the competition, but Zhang Wenyang refused. The other party killed him out of hatred."

Qin Fei felt it was a bit far-fetched.

Chen Yi smiled and said, "That's a very good guess. Reality is illogical. Some lunatics kill people for reasons that even psychiatrists can't understand.

I would like to add to what you said. A girl wanted to participate in the competition but Zhang Wenyang refused, so she hanged herself. The father blamed Zhang Wenyang for his daughter's death and also hanged Zhang Wenyang to death.

Su Ying nodded: "What Chen Xun said is more reliable. How is Qiao Rui's investigation going?"

Chen Yi said: "We are still investigating. The scope has been expanded to all his schoolmates. In terms of interpersonal relationships, Qiao Rui has the simplest one among the three and is the youngest. It is relatively easier to investigate and find abnormalities, so he is the focus of the investigation."

Su Ying was a little surprised: "How many people will that take?"

Chen Yi: "There is more than one victim. We need to find overlaps. Xiang Shu's patients are the basis for screening. There are not many, maybe around 3,000."

The investigation of this case adheres to the principle of starting with the easy and then moving on to the difficult. If there is nothing abnormal with the patient and the alumni, Chen Yi will have to carefully consider how to move forward with the case, and even be prepared for the special case team to return empty-handed.

Teng Dabin: "I was wondering why there are so few people in the detachment today, I guess they were all sent out to visit.

Chen Yi, how confident are you in this case? "

Chen Yi habitually took out his cigarette case and said with a smile, "It's not me, it's us. How confident are we? For such an old case with no clues, confidence is necessary. Since you asked, then let's be 100% sure."

Teng Dabin grinned: "It sounds like bragging, but coming from your mouth, I don't mean to despise you at all."

Chen Yi lit a cigarette and said, "The police have the advantage in numbers. As long as they can find the connection between the three victims, no matter how outrageous the connection is, they can get to the truth of the case. Do you understand what I mean?"

Teng Dabin said seriously, "I understand. Investigating a case is not the work of one person, it requires the joint efforts of everyone.

Then you go ahead and do your work. Su Ying and I will leave first. We still have to dig deeper into Zhang Wenyang. I am gradually beginning to like the feeling of deciphering secrets. "

After working undercover abroad for many years, he has been exposed to new things.

……

Another few days passed.

With the intervention of hundreds of police officers, the visit went very smoothly. Each group of investigators only had to be responsible for thirteen people, and today, an abnormal situation finally occurred.

Chai Ziyi placed a person's information in front of Chen Yi.

Name: Ge Shuiyun, female, 34 years old, local.

He is 34 years old now. He was 26 when the crime happened eight years ago. He attended high school in a middle school in the Economic Development Zone. He and the victim Qiao Rui were schoolmates, but they were in the same class.

When he registered at the Neurology Department of the Economic Development Zone Hospital, he was 25 years old and had symptoms of neuralgia and limb numbness. The medical record showed that there was no major problem for the time being. He planned to have a follow-up visit three days later, but the other party did not come for the follow-up visit.

I don’t know whether she has learned to dance. I just got the information and haven’t started investigating yet.

The unusual thing about this girl is that she cannot be contacted. The mobile phone number in her personal information has long been changed, and there is no current number under her ID card.

"Chen Xun, not only can we not contact this Ge Shuiyun, but his ID card has been silent for nine years. Have we found the right person?"

Chai Ziyi sat down and spoke.

"Nine years?" Chen Yi picked up the information, stared at Ge Shuiyun's name for a long time, and said, "Ge Shuiyun? If the name is reversed..."

Chai Ziyi just reacted, his eyes suddenly solemn: "Yunshui Inn?"

Chen Yi: "Dig deeper and get her detailed information."

Chai Ziyi stood up quickly: "Okay, I'll go right away."

(End of this chapter)