Chapter 486 Review of Files

Chen Yan found some clues at Zhang Hui's house, which were quite valuable.

First, from the half tablet of fluoxetine found in the dresser drawer, it can be basically determined that Wang Xia has depression or a history of depression.

Second, there is no blood on the door handle of Zhang Hui's house, which is very strange.

According to the analysis of traces at the scene, Zhang Hui should have been stabbed near the coffee table. After being stabbed, he dragged his body towards the door.

The neighbor who reported the crime said that he saw with his own eyes the door of Zhang Hui's house opened, Zhang Hui lying on the ground, and Wang Xia kneeling in a pool of blood with a sharp knife in her hand.

So, who opened the door?

And the expensive computer keyboard in Zhang Hui's study.

A computer costing three to five thousand yuan is equipped with a keyboard costing nearly ten thousand yuan. Why?

After leaving Zhang Hui's home, Chen Yan went straight to the Xishan Funeral Parlor where Zhang Hui's body was stored.

The autopsy was completed on the day of the incident. Zhang Hui was stabbed three times, one in the abdomen and two in the back.

Huang Guojun handed the photo of the time to Chen Yan: "This is the part where Zhang Hui was stabbed. We compared the shape of Zhang Hui's wound with the sharp knife in Wang Xia's hand."

"It's certain that the murder weapon was this sharp knife."

Then came an autopsy report.

Chen Yan put down the photo and took the autopsy report handed over by Huang Guojun. Chen Yan had no objection to the autopsy results of the Hulu Detective Team.

Zhang Hui's death characteristics are obvious, and his fatal injuries are very easy to judge.

Moreover, the murder weapon was at the scene. Just compare the depth and width of the knife edge on Zhang Hui's body and the shape of the sharp knife in Wang Xia's hand to confirm whether the sharp knife was the murder weapon.

In this regard, as long as an autopsy examiner has a little experience, he will not go wrong.

What Chen Yan cared about was the description of Zhang Hui's stab wounds in the autopsy report.

The knife wound on Zhang Hui's abdomen was about 4 centimeters deep, but did not damage the intestines and other internal organs.

There were two stab wounds on the back, one on the left and one on the right.

The knife wound on the right side was 3 centimeters deep and stuck on the ribs of the back, without damaging the internal organs.

The stab wound on the left side was 12 centimeters deep and pierced the heart, causing Zhang Hui to die on the spot.

There were photos of three stab wounds in the autopsy report, and it was these three photos that made Chen Yan a little confused.

Killing is not that easy.

Human vitality is also very tenacious.

Especially for knife wounds, if this kind of sharp weapon injury does not hit the vital point and damages important parts such as the heart and arteries, even if an average person stabs a person dozens or twenty times, it may not necessarily kill a person.

It's like stabbing a person in the abdomen. If you don't know the location of important organs such as the spleen and kidneys, stabbing them several times in a row may not necessarily damage the stomach and other organs.

In other words, even if the person is injured, the person will not die immediately.

It is even possible to live for a long time and take measures to stop the bleeding and wait for rescue to come.

Most deaths caused by severe abdominal stabbing are not due to damage to any important organs, but because the time is delayed for too long and they die from excessive blood loss.

The same goes for stabbing someone in the chest or back.

A stab wound anywhere other than the heart will not cause immediate death.

For example, the three stab wounds on Zhang Hui's body, the stab wounds on his abdomen and the stab wounds on the right side of his back were not fatal.

These two stab wounds could only make Zhang Hui lose part of his mobility, but it was impossible to kill him. Zhang Hui's fatal wound was the knife on the left side of his back that pierced the heart.

The statement that he is proficient in combat, autopsy skills and knife cognitive map is very clear about this.

These three stab wounds gave Chen Yan the feeling.

It's like it wasn't stabbed by one person.

Because the knife on the left side of Zhang Hui's back that pierced the heart was particularly precise!

This knife avoided the protection of the heart by the back ribs and inserted through the gap between the fourth and fifth ribs without damaging the bones at all.

The knife pierced the heart and severed the crown of the heart, causing massive blood loss in the body.

With just one strike, Zhang Hui would be completely dead within ten seconds.

This kind of precision.

Can Wang Xia do it?

If it was intentional, then Wang Xia would definitely not be able to do it without special training.

If it was a coincidence, it was too much of a coincidence.

funeral parlor.

Chen Yan personally inspected Zhang Hui's body.

As with the conclusions in the practice report, there really are no other issues.

All that's left is to investigate the clues just discovered.

Hulu City Detective Team Conference Room.

Chen Yan organized a case analysis meeting.

"First, conduct a detailed investigation into Wang Xia's past medical history."

"We found half a tablet of fluoxetine, a psychotropic drug used to treat depression, in the dresser drawer used by Wang Xia in the master bedroom."

"If Wang Xia is sure to have a history of depression, then whether she committed homicide and the circumstances of her suicide will need to be re-judged."

If Wang Xia suffers from depression, then Wang Xia's suicide is most likely due to the stimulation of external factors such as Zhang Hui's death, which caused her to become ill and commit suicide.

Perhaps it was the environment in the prison or the stimulation of the interrogation that led Wang Xia to commit suicide.

However, judging from the words Wang Xia left on the wall before her death, if Wang Xia really suffered from depression, it seems possible that she was not the murderer.

On the other hand, if Wang Xia suffered from depression, were there others at the scene on the day of the crime?

It is difficult to determine whether there was someone else who killed Zhang Hui, because Wang Xia suffers from depression and has communication difficulties. Even if she saw the murderer, she would probably not be able to express it.

"Team Huang, you are responsible for following up on this matter."

If Wang Xia really has depression, then the treatment should be at the hospital in Hulu City. If Huang Guojun investigates this, it should be faster.

"Second," Chen Yan looked at Liu Qingshan: "Regarding Zhang Hui's background investigation."

"After the incident, Captain Huang and others have conducted a relatively detailed investigation into Zhang Hui's background, but..."

Chen Yan operated the projection, and what was displayed was the hot air limited edition keyboard worth tens of thousands on the computer table in Zhang Hui's study room.

"I found this keyboard in Zhang Hui's study room."

"This is a very expensive limited edition mechanical keyboard, worth about 10,000 yuan."

"People who use this keyboard are either keyboard enthusiasts or have jobs that require special keyboard requirements."

"The possibility that Zhang Hui is a keyboard enthusiast is relatively small, because we did not find other keyboards in his home."

A keyboard enthusiast cannot have only one keyboard. In his previous life, Chen Yan had a college classmate who was a keyboard enthusiast.

I live in a house with two bedrooms and one living room, and I have a shelf in the small bedroom where dozens of various keyboards are placed.

"As for other types of jobs that require a higher level of keyboards, they are most likely to be hackers or text workers."

"But the computer configuration in Zhang Hui's study is not high, just an ordinary desktop computer costing three to five thousand yuan, so the possibility that Zhang Hui is a hacker is very low."

"According to Captain Huang Guojun's early investigation results, Zhang Hui is engaged in the research of new chemical materials at the Hulu City 301 Research Institute, and is not engaged in writing work."

"But according to the browsing history on Zhang Hui's computer, Zhang Hui often browses some websites."

"So, check to see if this Zhang Hui writes part-time."

"yes!"

"Third, Wang Gang, take the lead and check all the surveillance videos of Zijin Community on the day of the incident."

"Check all outsiders that day!"

In the early stage, because the case was relatively clear, Wang Xia kneeled in blood after holding a murder weapon, so Huang Guojun did not conduct a large-scale investigation.

The murderer was at the scene and was caught at the time of the crime. What investigation should be done?

But now it seems that there may be something fishy about Zhang Hui's death.

Naturally, Chen Yan would not let go of such an important clue.

However, when Chen Yan first entered Zijin Community, he discovered that there were relatively few surveillance cameras in Zijin Community, and he wondered if he could find any useful clues.

Everyone started to perform new tasks according to their work arrangements, and Chen Yan was not idle either.

In the office, Chen Yan was carefully flipping through the files on Zhang Hui's death case.

During this period, Chen Yan will review the entire file.

On the evening of July 12, 10:08.

The first detective team of Hulu City received a call to report the crime, and detectives arrived at the scene ten minutes later.

The reporter, Song Jun, is a tenant in Unit 305, Building 3, Zijin Garden, and is Zhang Hui’s neighbor.

The records in the file are very detailed, and there are also transcripts made by Song Jun at that time.

"I was lying on the bed preparing to go to sleep, but just as I was about to fall asleep, I heard someone shouting outside, which woke me up."

This is the first sentence in Song Jun's inquiry transcript.

"I don't have good sleep quality. I sleep very lightly. I can wake up if I make any movement."

"I was afraid that they would make noise again when I fell asleep, so I went out to argue with the neighbor and ask them not to be so loud at night."

"As a result, when I opened the door, I saw the door of room 301 opposite was open. Their man was lying on the ground, and the woman was kneeling in a pool of blood, with a sharp knife in her hand!"

"Damn it, it almost scared me to the point of peeing. You guys didn't know that."

"After it was over, I quickly called the police. I was afraid that the woman would run away, but I didn't dare to step forward, so I called out the people in 303 and 304."

"Didn't you shout at the 302 people?"

"I shouted, but no one came out of that house. I have seen 302's neighbor. He seems to be a doctor. He often works night shifts. He should not be at home at night."

"Not long after that, the police came."

"Is there anything unusual about the residents of 301 recently?"

"There's nothing unusual. I know the man in their family, but not very well. He seems to be engaged in research."

"We occasionally bump into each other in the elevator when we go to work, and sometimes we chat, but we're not particularly familiar with each other."

"When the door is closed, my family lives their own life, and I don't have much contact with my neighbors."

Song Jun's transcript was very short, and mainly explained what happened when Song Jun called the police after discovering that Zhang Hui had been killed.

The records regarding 303 and 304 tenants are also very simple.

What they saw when they opened the door and came out was basically the same as what Song Jun described. However, in their records, when they came out, Song Jun was already at the door of 305.

It was indeed Song Jun who called them out.

Judging from the files, none of the three neighbors behaved abnormally, and the crime scenes they described were similar.

Putting down the interrogation record, Chen Yan picked up his cell phone and arranged work for Zhao Bing: "Conduct background checks on several of Zhang Hui's neighbors, focusing on what these people do."

After hanging up the phone, Chen Yan continued to review the files.

In addition to written records, the file also contains many photos taken at the crime scene.

After receiving the alarm call and detectives arriving at the scene, Zhang Hui was confirmed dead.

According to the scene shown in the photo, Zhang Hui's left hand was in front and his right hand was slightly behind, in a crawling and lying position.

The specific position is the left hand, which has just crossed the threshold, and the right hand has not crossed the threshold.

At that time, Wang Xia was kneeling behind Zhang Hui with a sharp knife in her hands in a pool of blood between her legs, and the door was wide open.

Picking up the photo and looking at it carefully, Wang Xia's expression at that time was a bit hollow, her eyes were dull, as if she was staring at the sharp knife in her hand.

Shifting his gaze, Chen Yan stared at the entrance door of the room.

Something's wrong!

Something was particularly wrong.

When he was at the scene, Chen Yan had carefully observed the entrance door of Zhang Hui's home. There was no blood on the door handle or door panel.

In this photo taken at that time, Chen Yan also found no blood on the door handle and door panel.

This is a bit strange. According to Zhang Hui's crawling and lying posture at the time, Zhang Hui's left hand had already stretched out of the threshold.

Moreover, Zhang Hui's left hand was covered in blood, which was strange.

How did Zhang Hui's door open?

There is basically no possibility that Zhang Hui would open the door, because there was blood on Zhang Hui's hands. If he opened the door, there would definitely be blood stains on the door handle and door panel.

Judging from Zhang Hui's lying position on the ground at that time, Zhang Hui would have left a lot of blood stains on the door handle and door panel when he opened the door. However, the panel and door handle were very clean and there was no blood stain at all.

So was it Wang Xia who opened the door?

It seems unlikely that if Wang Xia opened the door after the murder and her hands were stained with blood, then the process of opening the door would also leave blood stains on the door handle.

If you open the door before killing someone, that doesn't make sense.

If I open the door to my home before killing someone, doesn't that clearly tell outsiders that I'm going to kill someone?

It is currently suspected that Wang Xia suffers from depression, but it does not mean that she is mentally ill.

so!

Chen Yan suspected that there should be a third person present at the scene.

If, the statement assumes that a third person is present at the scene.

Is it possible that she ran away after witnessing Wang Xia killing Zhang Hui?

Of course there is.

But here's the problem, there are no other people's fingerprints on the door handle.

If there is a third person at the scene who did not participate in the killing of Zhang Hui, then this person will definitely run away when faced with the fact that Wang Xia killed Zhang Hui, because this person is afraid that Wang Xia will also kill him.

But in this case, if the third person ran away through the door, he would definitely leave fingerprints on the door handle.

Because he was running for his life, he couldn't wear gloves at this time or wipe off his fingerprints after opening the door, right?

Therefore, it seems unlikely that this assumption has a logical omission.

The only remaining possibility is that the third person at the scene also participated in killing Zhang Hui, or even was the mastermind.

If this person is familiar with Zhang Hui and Wang Xia, and knows that Wang Xia suffers from depression, then he puts the knife into Wang Xia's hand after the murder, framed Wang Xia as a murderer, and then opens the door and leaves by himself. Is there such a thing? What's the possibility?

Of course there is, but the possibility is indeed very small.

Because even if the other party knew that Wang Xia suffered from depression, he couldn't be sure that Wang Xia would not confess during the interrogation, right?

If there is indeed a third person who framed Wang Xia, logically speaking it all makes sense.

It can be explained why Wang Xia committed suicide and why she left the words "She did not commit murder" on the wall.

Because she suffered from depression, Wang Xia was unable to communicate and could not tell the criminal suspect she knew in her heart, so she could only leave some clues and evidence by committing suicide.

This can also explain why there is no blood stain on the door handle or door panel of Zhang Hui's house.

Of course, this is just a situation Chen Yan hypothesized based on existing clues.

At 7:30 p.m., Huang Guojun was the first to bring back the news.

In the conference room, Huang Guojun began to report the relevant situation: "Team Leader Chen, we have found out Wang Xia's past medical history."

Huang Guojun looked very serious at this moment.

It can be seen that Huang Guojun's investigation results on Wang Xia's past medical history should be very valuable.

"We found a case of Wang Xia treating depression at Hulu City First People's Hospital."

"According to Wang Xia's attending doctor, Wang Xia suffers from moderate depression and is accompanied by very severe communication difficulties."

"Wang Xia first went to the First People's Hospital for treatment two years ago, one year after she married Zhang Hui. Later, after one and a half years of treatment, in February of the first half of this year, Wang Xia's condition improved. There has been a big improvement.”

"Wang Xia's depression has been greatly controlled, and she is basically in a state of recovery without being exposed to external stimulation. However, the communication disorder is still very serious."

"The fluoxetine tablets we found at Wang Xia's home were the medicines prescribed by the First People's Hospital."

"I asked Wang Xia's attending doctor for relevant information about the case."

"I learned from Wang Xia's attending doctor that judging from Wang Xia's condition, the information she left behind about committing suicide in the detention center should be true."

"It is impossible for patients with depression and communication disorders to lie. Judging from the information obtained from their clinical experience, this type of patients just have difficulty expressing their inner thoughts or information they know. Once something is expressed, it must be what they particularly want to express, so the possibility of lying is very small.”

"Furthermore, according to the doctor's judgment, Wang Xia's behavior during her detention has shown that she suffered from depression."

"The doctor's advice is that from a medical point of view, Wang Xia's suicide should be caused by an episode of depression. Of course, the specific cause must come from external stimuli, such as Zhang Hui's death!"

The information that Wang Xia suffers from depression has been confirmed.

Moreover, Wang Xia's depression is relatively serious, moderate depression, and is accompanied by severe communication difficulties.

This is also the reason why Wang Xia did not cooperate with the interrogation after being arrested.

Wang Xia's communication disorder prevents her from communicating with other people like normal people.

Moreover, judging from Wang Xia's condition, the information she expressed is most likely true.

In other words, the 10 words Wang Xia wrote on the wall before committing suicide should be true.