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

Chapter 603 Reasonable and Logical Speculations

Under the assumption, the murderer is indeed the most likely person among the 65,000 people.

Chai Ziyi agreed and said there was no problem.

Next, we analyze the motives. Why did the patients of Doctor Xiang Shu have conflicts with Xiang Shu?

Can't get away from disease.

Xiang Shu is the deputy chief physician of the Department of Neurology. There are so many diseases related to neurology, such as headache, neuralgia, insomnia, depression, etc., all of which can be treated in the Department of Neurology.

Simply put, as long as the neurological disease does not require surgery, in theory, surgical intervention is neurosurgery.

Since it has escalated to the level of murder, it is obvious that there is a lot of grudge between the two parties, but no medical accident was found, no one died, and no family members came to the hospital to make trouble.

Everything was calm and normal, but Xiang Shu was dead. He was drugged and hanged.

Chen Yi: “Now we have to go against the norm and abandon traditional thinking, because A is also against the norm.

Without considering the authenticity, let's make a guess. We just talked about the murderer's method of killing. Chai Zhi said that the murderer's relatives and friends might have also hanged themselves. Hanging is suicide, so under what circumstances would a person commit suicide? "

Chai Ziyi has an active mind and can follow up: "Depression, and depression is one of the main diseases treated by neurology."

After hearing this, He Shixin and others wanted to say that all the patients had been checked and there were no deaths, so suicide was not true, but they held back and did not say it out loud.

Chen Yi and Chai Ziyi are smarter than them, so it is better for them to remain silent at this moment.

Sure enough, Chai Ziyi immediately spoke up: "If the murderer's related person hanged himself, then the fact that all the patients are still alive is not true.

We did not meet with all 65,000 people one by one to confirm, we just made phone calls. There is a possibility... that the person who answered the phone was not a suicidal patient.

No, it’s not just possible, it’s highly likely that the investigator who made the call couldn’t even confirm who was on the other end of the line.”

Chen Yi: "It's logical, right? Then let's move on. The next person is dance teacher Zhang Wenyang.

Since he is a dance teacher, the unconventional interpersonal relationships are most likely from dance, and A is a dancer.

What kind of conflict would arise between a dancer and a dance teacher? If there is no connection, most of the answers can be ruled out. Who wants to guess? As long as it is reasonable, it will be fine. "

Everyone thought about it.

The police could not find any conflicts connecting the dancers and the dance teacher.

It's a bit difficult.

The first person to speak was not Chai Ziyi but Su Ying: "Zhang Wenyang participated in the national competition. The conflict may have arisen during the competition. A is not necessarily a participant, and the two are not friends, so there is no connection."

Chai Ziyi looked at the forensic doctor of the special case team. This made sense and was not far-fetched.

Chen Yi agreed: “Okay, let’s do as Sister Su said and create conflicts during the competition.

Next is the third person, Jory.

Qiao Rui's life was completely arranged and conformable. He had been very outstanding since he was a child. After graduation, with the help of his family, he went straight into the tobacco industry and got a golden rice bowl that everyone envied. He never had to worry about food and clothing in his life.

What conflict does a dancer with depression have with Qiao Rui? "

After Chen Yi finished speaking, Qin Fei immediately said, "Love killing."

Everyone turned their attention to Qin Fei, who added, "Dancers are mostly female, and they must have good temperament and figure. People with depression are more likely to take advantage of them. Qiao Rui used sweet talk to develop a one-night stand with A, and disappeared the next day, which led to the conflict."

Chen Yi thought about it and felt it was reasonable, so he adopted it.

At this point, a complete speculation framework is completed.

Of course, there are definitely many errors, or even all of them are wrong, but at least the rationality exists.

A. He had a conflict with Zhang Wenyang during a dance competition. Later, he suffered from depression and went to the Economic Development Zone Hospital for treatment. It was of no use to see Xiang Shu. In the end, he indulged himself with Qiao Rui.

If the murderer is A, then she wanted to commit suicide after killing everyone, and she also found three scapegoats before she died.

Or, the murderer was seeking revenge for A and put the blame on Zhang Wenyang, Xiang Shu and Qiao Rui, staging a "I didn't kill Boren, but Boren died because of me" drama purely to vent his anger.

Chai Ziyi went through the process and found it very difficult to confirm or exclude it.

It is definitely impossible to find out about a one-night stand, as Qiao Rui's hotel check-in records have long been known. His private life is still very healthy, probably due to his strict family education.

You can only check dance competitions.

All contestants and staff who appeared in the dance competition were compared with the patient list.

He was about to speak when Chen Yi spoke up: "Let's talk about the second possibility. The murderer or someone related to the murderer is codenamed B, and he is not Xiang Shu's patient.

Just now Chai Zhi mentioned the Jiangcheng case. So, referring to the Jiangcheng case, did B and the three victims experience something together that made B have the idea of ​​killing for profit or personal injury?

Chai Zhi has searched in this direction, but it was quite difficult, so perhaps he didn’t find it.”

Chai Ziyi said: "This possibility is the most difficult to handle. We must use investigation as a supplement and inference as the main method. During the Jiangcheng case, Chen Xun must have been very troubled at the time."

Chen Yi nodded.

The Jiangcheng case did rely mainly on inferences, and then targeted verification of the inferences. Otherwise, it would be impossible to find any connection between two people who had nothing to do with each other, let alone identify the murderer.

If the Jingcheng case is the same, then the investigation area needs to be further expanded, and the method used is: investigate the victim.

What are the personalities, hobbies, living habits, etc. of the three victims?

For example, if someone likes fishing, then the waters he often visits, the fishing friends he knows, the fishing tackle stores he often visits, the fishing friends groups he joins online, etc. are all included in the survey.

Heavy workload.

The special case team was mentally prepared when they took over the case.

Cases that have been pending for many years are definitely not that simple. We must try our best to find and fill in the gaps based on the files and gradually advance the progress of the case.

Perhaps in the course of the investigation new directions will present themselves.

"Chen Xun, should the dance competition be fully implemented? Although many years have passed, we can give it a try. The organizer may keep a record." Chai Ziyi brought up this matter.

Speculations are just speculations. There is no clear direction for investigation now, so we cannot miss any possibility.

Chen Yi: "Let the people below do it. Just send two people. After getting the list, immediately compare and search."

Chai Ziyi accepted the order: "Okay, I know."

Afterwards, Chen Yi looked at He Shixin and the others and said, "Two people in a group, each responsible for three victims. Regardless of whether there is a record in the file, go through it again to prevent anyone from lying.

I don't need to tell you how to investigate, right? The three victims were all local residents of the Economic Development Zone. They had lived in the Economic Development Zone for such a long time, so there was still a lot to investigate.

Except for Qin Fei and I, the rest of you can discuss it among yourselves. If you need police support, just contact Chai Zhi directly. "Chai Zhi said: "You can call me at any time, and I will coordinate."

The four of them discussed for a while and decided that He Shixin and Cheng Hanjun would be responsible for Xiang Shu, Teng Dabing and Su Ying would be responsible for Zhang Wenyang, and Qiao Rui would be left behind.

They probably thought there was nothing to investigate about Qiao Rui.

He comes from a family of scholars and has been an excellent student since childhood. After graduation, he did not have to do anything and went straight into the tobacco industry. His stable life has no ups and downs, but he is the object of envy of countless people.

"Chen Xun, let me go with you." Chai Ziyi said.

He didn't expect that Chen Yi would have to take action personally. In fact, there was no need to do so. There were still sufficient police forces, so he could just stay in the Municipal Bureau to command.

As long as the order is given accurately enough, the investigation results will not make any difference.

But everyone has their own investigative habits, which are the same.

Chen Yi: "Is the team not busy?"

Chai Ziyi: "There are a few cases, just let the people below handle them."

The Jingcheng Criminal Investigation Detachment has several subordinate brigades, which are sufficient to meet the work needs. As the detachment leader, when the special case team moves into Jingcheng, he must give priority to the serial murder case eight years ago.

This case has become a thorn in the side of the Jingcheng Criminal Investigation Team. We hope that the arrival of the special case team can remove it.

"Okay." Chen Yi did not refuse.

Since we are investigating Qiao Rui, the main task today is to meet his girlfriend. As the closest person of the same age, the importance of Qiao Rui's girlfriend to this case is self-evident. She can ask many little secrets that outsiders, including his parents, don't know.

Chai Ziyi had done this before. He had talked to Qiao Rui's girlfriend no less than ten times. It is worth mentioning that he gained new insights every time.

This is how field visits work. There is no guarantee that clues will be fully covered. Human memory is staged and needs to be dug into repeatedly.

Qiao Rui's girlfriend is married and has two children.

Eight years have passed and everything has changed.

My husband works in the Finance Bureau, and I met him through a blind date.

This is an institutional circle. Most of the relatives and friends around me are in the system. Due to the subtle influence of family education, they have a stable income and no worries about food and clothing.

She did not resist the police's sudden visit, and when she talked about her early boyfriend, although she was no longer sad, it was obvious that she still felt regretful.

It has to be admitted that Qiao Rui is a standard marriage candidate. If he were put on the blind date market, he would definitely be snapped up by not only the women but also their parents.

From the surface, there are no flaws at all.

He is tall, handsome, an excellent student, has positive values, a good personality, his whole family is involved in the system, and he himself is in the tobacco industry. As long as the woman is not the type who pursues a luxurious life, who wouldn't want to marry such a man?
Chen Yi was actually quite puzzled as to why such a young man with such a good reputation would suffer a fatal disaster.

Can you know a person's face but not his heart? But I can't find any black spots.

What Qin Fei said might be right. The most likely possibility was that he killed someone out of love.

If Qiao Rui was not at fault, then the murderer's motive for murder would be dark, such as jealousy, unrequited love and other negative emotions.

But where do these emotions come from when there is no connection between us?

You can't just see Qiao Rui living a good life on the street and want to kill him, right? That's impossible.

Chen Yi and Qiao Rui's girlfriend repeatedly confirmed whether there was a woman who liked Qiao Rui. The other party was very patient and affirmatively stated that she had never seen her since she met Qiao Rui, and only recalled the past during their school days when they were chatting.

From elementary school to middle school, and from middle school to university, Qiao Rui had no shortage of admirers at every stage, but he had only had three girlfriends, including her.

These three people are on the police's visiting list and everything is normal.

If it's a secret crush, then it's impossible to know.

What is secret love? Secret love is love that is not expressed. It is not impossible to investigate, but we have to consider whether it is worth spending a lot of police force and time.

After leaving Qiao Rui's girlfriend's home, Chai Ziyi chose a local specialty restaurant to invite Chen Yi for dinner. In the private room, the two sides continued to discuss Qiao Rui's problem.

In the end, Chen Yi gave an answer that was consistent with all the inferences.

Killing of passion.

Hanged.

Combining the two keywords, we can conclude that a girl committed suicide because of Qiao Rui, and the murderer was taking revenge on the girl.

It may not be true, but it is reasonable and logical.

In this way, the girl's outline becomes clear.

First, she suffered from depression, so she got to know Dr. Xiang Shu, a neurologist.

Secondly, she can dance, so she knows the dance teacher Zhang Wenyang.

In the end, she liked Qiao Rui, but the two had no connection or intersection.

Although it is just a guess and cannot guarantee its accuracy, we can try to verify it. At present, we still need to analyze how the girl came into contact with Qiao Rui.

Regarding this question, Chai Ziyi thought for a while and said: "The investigation has not yet covered... alumni and friends who have only met once, this is a huge project.

However, it is relatively easy to screen out female patients with depression from 65,000 people, and then search based on their academic records. If there are any alumni of Qiao Rui or people who live close to Qiao Rui or even in the same community, then..."

He didn't finish.

Chen Yidao: "I checked and found that 70% of outpatients in the Department of Neurology have varying degrees of depression and anxiety symptoms, so depression cannot be used as a label, not to mention it is just a guess.

The scope should be as wide as possible, covering all 65,000 people, including the primary schools, middle schools, and universities that Qiao Rui attended. List the patients who meet the requirements separately to see how many there are. "

Chai Ziyi nodded: "Okay, I think it's inevitable. Jingkai Hospital is not a very famous hospital. Most of the patients who go to see a doctor are locals. Locals definitely go to local schools, so the overlap is still very high."

Chen Yi: “Young people rarely visit neurology departments.

Qiao Rui is 25 years old, plus or minus six years based on the primary school semester. We only checked people who were between 19 and 31 when he was killed. You can calculate the exact age when he was examined yourself."

Chai Ziyi: “Understood.”

After dinner, Chen Yi and Qin Fei returned to the hotel. The special case team arranged their own food and lodging, which was reimbursed by the police chief.

When He Xin and his team also came back, they couldn't find anything after several hours of investigation. At most they got familiar with the people related to the case.

Chen Yi did not call a meeting to let everyone rest early, but stayed in the room to think about the future direction of the investigation of the entire case.

Whether it was depression, dancing, or liking Qiao Rui, they were all just guesses. The probability of finding a breakthrough clue was very low, and he needed to look three steps ahead.

(End of this chapter)