The professional quality of the male protagonist

Since Liao Qun can't help much, Li Yan can only rely on himself.

After returning to the room he rented, Li Yancheng turned on the computer and uploaded the video to his mailbox to extract it.

The video was not very long. Under Li Yancheng's instruction, what Li Yancheng got was five or six days of surveillance video before and after that.

And the video is not just the warehouse where the man works, but also the surveillance video of the place where the woman works, and he also got it together.

Staring at the two surveillance videos, it took Li Yancheng more than four hours to watch them all.

The surveillance video did record the working hours of the two of them. On the day before and the two days before and after the incident, the man did not go to work for only one day, but the woman was nothing special.

On the surveillance video, the pictures about the two people are not very long, and there is almost no useful information except for the commuting time.

Li Yancheng investigated like other aspects, but the woman was always surrounded by people during working hours, so there was no way to avoid it, so he was basically not suspected at all.

But that's not the case for the man who works in the warehouse. He works in the warehouse. Except for the video of getting off work, no one else can prove it.

Liao Qun was not around, so he could only rely on himself. Li Yancheng was not as familiar with video analysis as Liao Qun, and there was no way to analyze that video as a series of data.

So Li Yancheng spent a lot of time studying the part of the video where he went to work. What came down in the video was the back of a man whose face could not be seen clearly from the angle of top to bottom. It also made him unable to see each other clearly.

Li Yancheng watched all the videos he got before, and it was obvious that in the next 3 days, the other party deliberately avoided the videos, but this 'intention' was very subtle, more like it was done unintentionally.

But after staring at the video so many times, Li Yancheng also vaguely found something wrong, the person in the video was a bit strange.

It's not that the person's expression and behavior are strange, but that he himself is very strange.

According to the information Li Yancheng had seen before, the man in the couple was about 1 meters tall. Although he was not very tall among men, he was still much taller than women.

But the man Li Yancheng saw in the video was a long way from the top of the elevator.

In order to confirm what he was thinking, Li Yancheng went to the surveillance video and walked around, and then asked the person in charge to get the same video.

Sure enough, the height of Li Yancheng walking in the video was much different from that of the man.

The man's height was slightly later than Li Yancheng's, but judging from the video, the man was a head shorter than Li Yancheng.

Such a disparity in height clearly told Li Yancheng that it was not that man.

This is a piece of strong evidence. Even if it doesn't prove that the man may be the murderer, it at least proves that the man has something to do with this matter.

And after contacting the information that Ye Kai said when he called, Li Yancheng probably understood what happened.

On the other hand, Zhang Xuan's investigation has also reached a critical step.

Knowing that the murderer was probably an acquaintance of the victim, Zhang Xuan focused on investigating a few families with good family ties with the victim. There were few such people, so the investigation was not strenuous.

After contacting those who were familiar with the victim, Zhang Xuan and the others learned something surprising.

The situation in the victim's home was not as harmonious as they had heard before. According to their investigation, the victim was spoiled by his parents since he was a child. After dropping out of school, he went out to work and returned home. Go out to work, while his parents work in a neighboring city.

Moreover, what they investigated before was that although the victim did not have a job at home, he was not short of expenses. This was obviously because of the help of his parents.

But when Zhang Xuan and the others investigated the few people who were very familiar with the victim, they learned that the victim's money was given by his parents, but it was not willingly, but 'wanted'.

The parents did spoil the victim when he was young, but when the victim grew up and started to get worse, there was a disagreement with the parents.

But at that time, their two eyes couldn't match the grown-up child, so the victim who caused trouble outside when he was a child began to call the king at home, and if his parents didn't do things according to his wishes, he would be beaten.

This is still extremely minor. The main reason why the victim was unwilling to go to work at home was because the victim caused trouble outside.

This disaster is not small, people were sent to the hospital, and it is estimated that they will be disabled for life.

Originally, the family members of the other party had called the police, but the victim slipped away quickly at that time, so he was not caught, but he was unwilling to go out after that.

The family situation is not favorable, and after such a toss, it will be even more indebted.

His parents had no choice but to go to work. Two people in their 40s and almost 50 years old were doing humble jobs in the company and living in the basement to support their son who was hiding at home.

This is not in line with the protectiveness that the couple showed when they were in the police. When Zhang Xuan presented all the investigations in front of the couple, the two looked at each other, but they didn't say a word to Zhang Xuan. talk.

As long as Zhang Xuan and the others have no direct evidence, all that Zhang Xuan has investigated is just some useless things.

Oman will give some useful evidence at that time, but the evidence is too weak.

Oman carefully checked the marks on the victim's body. He didn't have any obvious wounds on his body. The main marks were all made of soft cloth or something like that. Those marks only appeared within a period of time after the corpse died, and It can almost completely disappear in as little as half an hour.

When Aman came, this period of time had already passed, so it was found out because some corpses that had not fully degenerated in the future were quickly tweeted.

The traces could not be recovered, so Oman put his mind on the set of clothes the victim had worn before.

The set of clothes that the victim was wearing before he died was home clothes that were often worn at home, and they were put away and left untouched.

Oman found some fibers on the victim's clothes, most of which came from the victim's home.

The source is basically the bedding in the victim's home. After running to the victim's house and taking back all the bedding, Aman confirmed the security scene.

The scene of the first crime was in the victim's own room. Judging from the time at that time, the murderer should have entered at the earliest time. When he couldn't hide and was about to attack, Gu Mute entered the victim's house and poisoned him.

All this was witnessed by the murderer, who then followed his example and decided to find a substitute.He also poisoned the water tank after he left, although the reason for this is still unknown.

The murderer did not come out immediately after taking the poison, but waited until the victim drank the poison and appeared in a dizzy state of initial poisoning before appearing, dragged the victim into his own bedroom, and then restrained him.

There were no traces of fighting in the question, and the victim did not have any obvious injuries, so it can be further concluded that the victim and the murderer knew each other. It is very likely that they had met the murderer face to face, but they were completely unprepared.

At that time, the victim had already started to feel unbearable abdominal pain and dizziness due to the initial reaction of the poisoning. The murderer probably took this opportunity to persuade him to go back to the room to rest, and then went to call the doctor or call for help. The victim was not prepared, so he returned. room to bed.

At this time, the murderer started to attack suddenly. He used bed sheets and other things to trap the victim in the room, who was already in unbearable abdominal pain, and prevented him from going out to seek help.

After the victim was completely poisoned and began to have a violent reaction, he dragged the victim from the bed into the room and placed it on the ground, creating the illusion that the victim fell to the ground exhausted after being poisoned, and lost his life after being poisoned.

Then the murderer himself took this opportunity to leave the victim's house.

In this way, the entire crime scene layout is completed.

Gu Mute was poisoned, and there was physical evidence that the murderer was Gu Mute. Almost no one could see the flaws, so no one would suspect him.

With the help of Ye Kai and others, Zhang Xuan has confirmed the process of the murderer's crime, and basically determined that the murderer is one of the two people, no, maybe the two people conspired, but there is no evidence.

Oman has done his best. He can roughly restore the process of the victim's murder and poisoning process, and he can also conclude that the poison given by Gu Duba was not the real cause of the victim's poisoning.

He even found many fingerprints of the couple in the house, but it was meaningless.

Because that was their home in the first place, and after the victim's accident, they went back for such a long time, leaving some fingerprints in their own home is a very normal thing.

But there was still no news about the medicine that poisoned the victim.

It was as if they had disappeared from this world. No matter how they searched, they couldn't find the bottle of medicine.

For a while, they even suspected that maybe the bottle of medicine was buried by the couple at random.

After having this idea, they even borrowed police dogs from the police, but they still got nothing.

It wasn't until Li Yancheng made a phone call to Aman.

Li Yancheng called to ask Oman one thing, how long was the production date of the bottle of medicine used by the mute in the police station?