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

Chapter 553 Hell on Earth
"Where's the hair?"

In the case handling hall, Chen Yi asked as he took the documents handed over by the police officer.

The police officer replied: "The hair belongs to Kou Chaoyi."

Chen Yi flipped through it roughly. The report contained detailed processes and not just results. The principle of DNA detection is to compare each site to determine whether they are the same. Nowadays, the technology is very mature.

"How long does it take for blood to coagulate?" Chen Yi asked again.

Police officer: "The preliminary judgment is that it is several years old. We need to test the growth of microorganisms for further confirmation."

There is certainly a difference between blood stains that have been coagulated for several years and blood stains that have been coagulated for a few days. The main difference lies in the appearance of the blood, color changes, and possible microbial growth.

Fresh blood is bright red. As time goes by, the blood will gradually oxidize and the color will change from bright red to dark red, and may eventually turn to brown or grayish brown.

This process is accelerated in sunlight.

The bloodstains found in Guan Xinmei's dormitory had obviously turned brown, and turned gray in places exposed to direct sunlight, so they were definitely not left there recently.

As for the microbial growth mentioned by the police, it is relatively simple. The blood is rich in nutrients. If the blood is not completely dry in a short period of time, microorganisms may breed.

When the blood has been dry for more than half a year, the nutrients in it will be greatly reduced, which is not conducive to the growth of microorganisms.

Therefore, the number of viruses or bacteria in blood that has been dried for more than half a year is relatively small, and may even have lost its activity.

"Go ahead." Chen Yi waved his hand.

"Yes." The police officer turned and prepared to leave.

"Wait a minute." At this time, Chen Yi suddenly stopped him, picked up the report in his hand and said, "The blood doesn't belong to Guan Xinmei. Is it possible that it is a relative of Guan Xinmei?"

"Relatives?" The police officer was slightly stunned, and quickly replied: "If it's a kinship relationship, we need to re-identify it, but it's definitely not a parent-child relationship. Do we need to do a kinship test, Captain Chen?"

Chen Yi thought about it and nodded to let the other party implement it.

In fact, there was no need for that. He asked about the relationship because he suddenly thought of Guan Xinmei's mother.

This woman is currently out of touch.

It's always right to be more suspicious.

What if?
"She's not Guan Xinmei's mother either..."

Chen Yi stood up with the documents and then went into the forensic room.

The examination of Guan Xinmei has been completed. Fang Shuyu has written the report. When she saw Chen Yi coming in, she handed the report to him without saying anything, letting Chen Yi read it himself.

Chen Yi thought he had made a major discovery, but after looking at it, it turned out not to be. Guan Xinmei did not have any scars on her body, but... she was no longer a virgin.

Guan Xinmei had sex with a man.

"Does she have a boyfriend?" Fang Shuyu asked.

Chen Yi shook his head: "I haven't heard of it. I'll go find out."

After leaving the forensic laboratory, she came to the room where Guan Xinmei was.

At this time, Guan Xinmei sat obediently on the sofa, without drinking a sip of the water in front of her. Maybe it was her first time at the Public Security Bureau, and the nervousness and fear on her face were obvious.

Chen Yi sat down, put the test report on the table, and said, "Guan Xinmei, the bloodstains in the dormitory are not yours, why did you lie?"

This time Guan Xinmei was prepared and answered quickly: "Not mine? Then I don't know. My hand was indeed injured at that time."

Chen Yi knew what she was thinking.

Dormitories are temporary residences. What does the blood stains found inside have to do with the students living there? It's normal not to know.

But her acting wasn't very good and her logic didn't make sense, she definitely knew that.

Just for some reason, I don't want to tell the truth.

What's the reason? What is she worried about?
It is difficult to infer the owner of the blood at the moment since we don't know the owner. From the results of the visit given by Qin Fei, the college student named Wu Yuehan and Guan Xinmei should have both been harmed by Kou Chaoyi.

Wu Yuehan stopped at indecent assault, but what about Guan Xinmei?

Has it succeeded?

Kou Chaoyi's private hair was found in the dormitory, and Guan Xinmei herself was not a virgin, so the probability of success was very high.

She has never chosen to graduate and go to college, and the reason she gave was that she wanted to take the undergraduate entrance exam. Is it possible that she did not want to take the undergraduate entrance exam, but was unable to leave under the pressure of Kou Chaoyi?
Her mother was missing and no one could support Guan Xinmei. She dared not and was powerless to resist.

"Do you have a boyfriend?" Chen Yi asked this question.

Guan Xinmei denied: "No."

Chen Yi: "Who did you have sex with?"

Guan Xinmei stood there in a daze, and only then did she realize what the beautiful forensic doctor was examining. She lowered her head and fell silent.

Chen Yi said in a gentle voice: "Student Guan Xinmei, this is the Public Security Bureau. I am Chen Yi, the captain of the Criminal Investigation Division. You can tell me anything. I promise you that you will never be harmed. Those who made mistakes will also get the punishment they deserve."

Guan Xinmei's shoulders trembled and her head drooped even lower, with no expression visible.

Chen Yi continued, "If you are still afraid, you can learn more about me. You can search Chen Yi's name on the Internet.

All you need to know is that with me, no one can get away with it.

Tell us what happened. "

Guan Xinmei's shoulders were shaking more frequently, as if she was crying.

Chen Yi stood up and tentatively took out a few tissues and handed them over. After Guan Xinmei took them, she was wiping her eyes.

Sitting back in his original seat, Chen Yi stopped talking and waited quietly.

A few minutes later, Guan Xinmei stopped crying, held the wet tissue in her hand, and slowly raised her head.

The red eyes looked at Chen Yi.

Chen Yi looked forward to her next words.

"Captain Chen..." Guan Xinmei said softly, "Nothing happened. I really don't know whose bloodstains are in the dormitory."

Chen Yi's face darkened slightly, not at Guan Xinmei, but at the person behind her.

This person should be Kou Chaoyi.

What happened in Guan Xinmei's dormitory? Why did she hide it?

Judging from her crying just now, Guan Xinmei must be feeling extremely aggrieved, but she insisted on not speaking it out.

Even when he arrived at the Municipal Bureau, and even in the face of the persuasion of the Criminal Investigation Team Leader, he did not waver in the slightest.

"Think about it again. There is a computer over there and you can search for whatever you want. I'll repeat, my name is Chen Yi, Erdong Chen, the more the better."

After saying that, he left the room.

Guan Xinmei sat there quietly and lowered her head again.

"Jiang Jie."

Chen Yi waved Jiang Xiaoxin over and told her to try to make friends with Guan Xinmei. The ultimate goal was to make Guan Xinmei trust the police and tell them everything she knew.

It may not work, but you need to try it. Women are easier to communicate with each other.

Jiang Xiaoxin, a computer major, has never participated in an arrest operation and is relatively friendly in temperament. The other female police officers are a little too serious, which can easily make people feel resistant.

"Okay, I'll try my best." Jiang Xiaoxin entered the room.

Afterwards, Chen Yi went to see Kou Chaoyi.

There is no need to talk about Kou Chaoyi. He knows nothing about anything. If you want to pry something out of him, you might as well go after Guan Xinmei.

"Captain Chen, I really don't know what's going on. Whose bloodstain is that?" After asking a few questions, Kou Chaoyi became a little anxious and started asking back.

Chen Yi did not answer and started talking about Guan Xinmei.

Single dormitory, such a privilege, why? She is not a relative of some school leader.

One cannot help but associate it with words like "a beautiful woman hidden in a golden house" and "two Qiao sisters locked up in a bronze sparrow in the spring". Kou Chaoyi's answer was that Guan Xinmei was an "old man" in the school and had studied for several years just to get a good undergraduate degree. As the saying goes, there is a generation gap between the two. Guan Xinmei lived with other younger students and could not handle the relationship well.

If Guan Xinmei can get good grades, it will be of great help to the student publicity, so she was given a separate dormitory so that she can study hard.

Reasonable, but far-fetched.

"Why are there your hair in her dormitory? Do you go there often?" Chen Yi said.

Kou Chaoyi nodded: "I go there often. Guan Xinmei is a top candidate in the college entrance examination. As the principal, of course I have to care about her. The hair that Captain Chen mentioned...maybe it was accidentally lost. This is normal. Don't we often lose hair in our daily lives?"

Chen Yi stared at him: "I'm not talking about hair."

Kou Chaoyi understood immediately and said calmly: "That's normal. Captain Chen is a man, don't you have similar experiences?"

Chen Yi did not comment.

As long as there is no one caught in the act, no hard evidence, and both parties deny it, there will be no conclusion.

What we need to do now is to identify the owner of the blood as soon as possible.

"Captain Chen, can Guan Xinmei and I leave today?" Kou Chaoyi asked.

Chen Yi stood up and said, "Let's talk about it later."

He left the room.

In the conference room, everyone sat down to discuss the next focus of the investigation into this case.

It's nothing more than two things.

First, whose bloodstains did Guan Xinmei have in her dormitory? How did she get injured? Is she alive or dead?

Second, what did Kou Chaoyi do to Guan Xinmei.

The parties themselves did not tell the truth, which instantly made the case more difficult.

"Since it's in school, he should be a student, right? It will be a huge project to investigate." Qin Fei said.

The large scale of the project does not mean that we will not check it. We do not rule out the possibility of extracting DNA from all students, including graduates, for comparison.

Judging from the amount of bleeding, the injuries are definitely serious and may include death.

Chen Yi tapped the table lightly and said, "Go through the missing cases and see if any of Qingshi's students or teachers have disappeared in recent years, or if there are people related to students or teachers."

The police officer took notes and checked them immediately after the meeting.

"Why don't you tell the truth?" After an order was issued, Chen Yi raised his hand and rubbed his eyebrows.

Qin Fei looked around and saw that no one gave any opinions. He hesitated and said, "Captain Chen, is she protecting Kou Chaoyi? Although it's a bit outrageous, it's possible. At least it can explain the current situation."

Chen Yi was still rubbing, and his voice rang out: "You want to talk about Stockholm syndrome."

Qin Fei: "Yes."

Stockholm syndrome is a rare psychological disorder.

The main manifestation is that when the victim faces extreme threats, he or she develops emotional identification with the perpetrator and even forms a harmonious relationship with him or her.

This mental illness is related to the body's automatic protection mechanism. People will obey if they cannot resist, and then develop a consciousness of worshipping the strong. In serious cases, they will become emotionally dependent.

Simply put, the psychology is distorted, the liking is a deformed liking, and the love is a deformed love.

Chen Yi thought about this possibility. If it was true, it would be quite troublesome and he would need to treat the patient first and then ask about it.

"Why don't we find a professional psychologist to make a judgment? Sister Xue is not here." Qin Fei spoke immediately. He felt that the possibility was still quite high.

There are psychological counselors in the bureau, and the one with the highest level is Sister Xue mentioned by Fang Shuyu before, who is at the national level two.

Their daily work involves providing mental health training, counseling education, group counseling, crisis intervention, etc. to police officers and the public. They are also responsible for providing a 24-hour psychological service hotline for the psychological team.

But she took leave.

I heard that there was a small problem at home, an emotional one, and everyone was speculating and suspected that her husband was cheating on her.

Chen Yi agreed: "It is indeed necessary. Don't worry about it. I will arrange it."

Qin Fei nodded: "Okay, are you still looking for Guan Xinmei's mother?"

"Let's put it aside for now. The most urgent thing is to find the owner of the bloodstain." After saying that, Chen Yi looked at Lu Yongqiang who was sitting on his right, "Brother Qiang, how about this, you take people to thoroughly investigate Kou Chaoyi's office again to see if you can find any useful clues. The search warrant will be issued later.

Oh, and check the walls carefully to see if there is a secret room."

Kou Chaoyi has a serious problem, and the investigation needs to cover a wide area. The office is Kou Chaoyi's second home in school and is very private, so perhaps we can find some clues there.

Lu Yongqiang accepted the order: "Yes!"

After the meeting, Chen Yi called He Shixin and asked him how the search for Du Xun was going.

"No progress for now." He Shixin said on the phone, "We have searched almost 80% of the Internet cafes. The surveillance cameras around the school didn't find any trace of Du Xun. The main places are remote and there are too few surveillance cameras. Oh, by the way, Kou Chaoyi drove away from the school at 10:34 last Sunday night."

Chen Yi: "Where are you going? Are you going home?"

He Shixin: "That should be it. I saw it on the surveillance camera. There is no continuous tracking. Do you need to confirm it?"

Chen Yi: "No need for now, I'll go ask him directly and check all the Internet cafes as soon as possible."

He Shixin: "Okay, if you still can't find her, I'll check all the surveillance cameras in the city, use facial recognition, and look for Guan Xinmei's mother as well."

Chen Yi hummed and hung up the phone.

……

Qing World.

Lu Yongqiang brought people into the school and came to Kou Chaoyi's office.

There is no door lock.

All technical detectives put on shoe covers and gloves, entered the room and began their investigation.

If there are obvious suspicious traces, it is very easy to find them with the intervention of technical investigators. After only ten minutes, there will be results.

"Army!"

Hearing the shout, Lu Yongqiang, who was groping the wall, turned back subconsciously and then walked over quickly.

Squatting beside the sofa, he looked at the sofa leg pointed out by his subordinates. Under the illumination of the trace light, there were some fluorescent spots there, which made the investigators nervous.

"Draw the curtains, reagents!"

Lu Yongqiang gave the order and took a few steps back.

As the reagent was sprayed, blue-green fluorescence appeared, and as the spraying area expanded, there was no interruption at all. The fluorescence continued to appear and extended to two meters away from the sofa.

Because it had been wiped, the area was wide, and a large amount of blue-green fluorescence was felt, jumping wildly in the eyes of all trace examiners, as if venting the buried grievances and roaring out the long-lost truth.

"Go on!" Lu Yongqiang's eyes trembled as he watched.

He was not mentally prepared for the scene before him. When he received Chen Yi's order, he thought he was just here to take a look.

All trace tests are sprayed with reagents, and because the fluorescence will gradually dissipate in thirty seconds, they are very fast.

I can’t stop. I can’t stop at all.

On the floor, on the sofa, on the coffee table, on the wall...

The depth of color caused by the concentration of iron ions can be seen in splashing, throwing, dripping, wiping, immersion, dilution, etc.

Lu Yongqiang sucked in a breath of cold air. The shocking fluorescent blue flash was a bit dazzling to his eyes. In all his years in the industry, he had never seen such a horrifying scene.

This is not Kou Chaoyi's office at all, it's hell on earth.

"Oh my god, what's going on?"

Lu Yongqiang came to his senses and immediately took out his cell phone and called Chen Yi.

(End of this chapter)