Panda Criminal Investigation Team

Dong Cheng realized that this was asking for his alibi,

First, they scolded how they could doubt themselves,

After showing evidence that he is a good citizen (no jaywalking, no littering, no overtaking, etc.),

Finally panicked: "No way,

really doubt me? "

"This... Dong Cheng, right?" Yu Renjie glanced at him impatiently.

"It's me! It's me."

Dong Cheng quickly nodded in agreement.

"From now on,

Please answer our questions directly,

If you continue to babble and say something irrelevant, you will be arrested for obstructing official duties. Yu Renjie turned to Hao Jinyang who was taking notes: "Which page is this rule written on?"After a while, you can find it out and show it to Mr. Dong, and don't say that we are abusing our power. "

Hao Jinyang really didn't know which book this rule was written on and which page.

I don't even know if there is such a book, but Dong Cheng was so frightened that he lost his soul and stammered: "No,

Need not,

I'll say it right away!Friday night... no, it should be Saturday morning,

I'm at home. "

"Who can prove it?"

"Can my parents do it?"

"The words of the testimonies of important relatives,

I'm afraid not. "

"My parents are human too,

are good citizens,

My mother was also elected as the building leader by the neighborhood committee!oh,

correct,

That's when I made a call! "

"with who?"

"Bao Rongrong, our IT here, he has something to ask me about work,

I also discussed with him about biological genetics,

If you don’t believe me, ask him! "

"It's so late, two men talking on the phone?"

"It's not for work, let's talk for a while by the way."

"Did you call from your home phone, or your cell phone?"

"Use your home phone."

Yu Renjie told Hao Jinyang: "Yang Kimchi, go and check Dong Cheng's phone records."

Dong Cheng's face immediately changed, and suddenly turned red: "Ah, I remembered wrongly, that happened a few days ago."

Yu Renjie sighed: "We have always wanted to help you, but if you don't answer truthfully, we will invite you to the bureau for tea."

Dong Cheng asked cautiously: "Are the records on the dating site considered evidence? I still have the video."

At the same time, Hao Jinyang angrily crossed out all the parts recorded just now.

Dong Cheng took a laptop from his seat, closed the door of the meeting room tightly, and lowered the curtains before he was willing to enter the password and turn on the screen.

He found a video in a certain folder on the network disk, and there were many similar videos in the same folder, all named after the combination of date and person's name.

After double-clicking the video, Yu Renjie covered half of his face, while Hao Jinyang's entire face was blushing and bleeding.

In the video, a plump woman with heavy makeup and a low-cut top is coquettishly speaking to the microphone, scratching her head and posing from time to time.Every once in a while, she loses a piece of clothing, and after a while, she has nothing to wear.

In the video, besides the woman's voice, there is also a man's voice. The woman followed his instructions and acted. It turned out that this is a paid video of an adult | website.

Yu Renjie asked slowly: "The time shown on this video is the same as the time when the crime happened, but there is a male voice in it, whose is it?"

Dong Cheng excitedly said: "It's mine, it's mine!"

Yu Renjie turned his head to ask Hao Jinyang for his opinion: "Do you think this is his voice? I think it really does resemble it." Before Hao Jinyang could answer, he said, "It's just that the voice is a little low, it would be nice if it was a little louder. Now, I can hear you better."

Dong Cheng immediately amplified the volume, regardless of how embarrassing the voice inside was, Hao Jinyang was already swallowing loudly.

Yu Renjie couldn't see the screen clearly, so he maximized the video screen, and the woman's breasts instantly took up more than half of the screen. Hao Jinyang was so frightened that he covered his eyes with an oops, and could only look at the computer screen through his fingers.

Dong Cheng was eager to prove his innocence, pointing to the screen and said: "The time in the lower right corner is built-in by the system, there is no fraud. You can go to check the website records, the one watching the video is definitely my IP address!"

Yu Renjie hummed: "Give me a copy of the video later, I need to go back and investigate."

Dong Cheng quickly agreed: "Of course, as long as I can prove my innocence."

Unexpectedly, Yu Renjie stood up, opened the door of the meeting room suddenly, and shouted outside: "Guys, who can borrow a USB flash drive? I need to copy a video."

The people outside the house rushed in, and those who couldn't fit stuck their heads by the door, desperately asking the people inside: "What's going on? What's this strange sound?"

Dong Cheng wanted to close the computer right away, but Hao Jinyang was still staring at the screen and recording, he didn't dare, so he had to let his obscene words float out, and the huge breasts on the screen were floating up and down, so it was not perverted.And Yu Renjie took out a USB flash drive from his pocket at this time, and patted himself on the head exaggeratedly: "Look at my memory, I have it with me, so don't borrow it, don't borrow it."

No matter how stupid people are, they would have guessed that he did it on purpose, but Dong Cheng dared not speak out, so he smashed his teeth and swallowed it in his stomach, ruining his fame for the rest of his life.

Before leaving, Hao Jinyang copied all the videos, and obtained Dong Cheng’s consent to extract his oral secretions with a cotton swab as a sample for DNA comparison.But as soon as he went out, Yu Renjie said: "Dong Cheng is not the murderer." Hao Jinyang also felt this way. Dong Cheng is just an arrogant buffoon, not the real murderer. After the video and DNA tests are completed, I am afraid that his suspicion will be closed. was completely ruled out.

That evening, Fat Wei and Xi Shi came back.As soon as Xi Shi came in, she spread her hands and said, "It's a waste of time."

Unlike the big companies advertised in the advertisements, Helios has only a few small assembly lines, and the parts are all supplied by other factories.Helios is located in a small two-story factory building on the outskirts of the nearby provincial capital.The first floor is the production line and warehouse logistics department, the second floor is the sales and support department, and the sales department has twice the number of people in all other departments combined.

Fat Stomach and the others had separate conversations with Sun God's general manager, legal affairs officer, and project leader, and found that all three had alibi.Among them, the general manager and the project leader were on a business trip at the time of the incident, while the legal counsel went to the bar with friends on Friday night and stayed until the bar closed. There are bar staff who can testify.

Among them, the general manager has a particularly irritable temper, pointing at the fat stomach and yelling: "We pay so much taxes, this is how you work? Don't think about it before doing things, isn't it just an old man who is paralyzed, and just pays more money What, do we deserve to kill people! Look at how fat you are! A waste of national food!"

Afterwards, Fat Stomach was aggrieved and said: "Why do you say that about me? I ate my own, but did I eat his? I also want to eat without gaining weight, but I get fat even after drinking cold water. What can I do?"

Xi Shi patted Fat Stomach's generous back to comfort him, bought him a box of chocolates, and he smiled a little.

Taking chances, the second team still sent the DNA of Dong Cheng and the Sun God staff for testing, but they were inconsistent with the DNA extracted from the corpse.Everyone had expected this result—those who were willing to cooperate with the investigation before the search warrant was issued were often not the murderers, but they were still somewhat disappointed when the results came out.In this way, the two directions of tracing the murderer were all cut off.

The golden 72 hours to solve the case have also passed.After these three days, the traces of physical evidence at the scene will disappear one after another, the memory of the witnesses will no longer be clear, and the murderer will have more time to exonerate himself and hide.In an era of scarce police force, as other cases occur, the time a criminal policeman contributes to this case will also decrease.Slowly, it will become an unsolved case.

Since then, another investigation has been carried out on Lu Bing's important people, and no new situation has been found. He has also been involved in the investigation from other directions, but no new clues have been found. This case is the same as many other unsolved cases. It's slowly going unresolved.

But the case without progress also suggested some new directions—maybe the murderer had no clear connection with the deceased, in other words, the case happened between strangers.

Cheng Bin ordered Xi Shi to retrieve the national criminal information database and compare the murderer's fingerprints and DNA with it, hoping to find some clues.When the results came out, everyone was still disappointed and no matching data was found.But also obtained new information from the side, the murderer may be the first crime.

Nevertheless, the focus of the investigation is still on acquaintance crimes. According to past historical data, acquaintance crimes accounted for more than 80% of all homicides, and only about 14% of people were killed by people they did not know. It also includes cases of different natures such as arson, terrorist attacks, and religious killings.The probability of a real one-on-one murder of a stranger is extremely small.

It was not until a month later that the case made new progress, and the second female body was discovered.

The place where the body was found this time was in the suburbs, an industrial city located in the southernmost part of the city.There are many steel factories and chemical factories concentrated there, and it has been reported that unscrupulous factories have discharged waste water into the nearby river, forming a smelly river.There are few residential areas around, and the real estate prices three kilometers away have plummeted for a while, but have not risen back to their original prices after several years.

The body was less than 200 meters away from the stinking river, completely naked, the clothes she had worn were neatly folded aside, her face was covered with her coat, it seemed that the murderer could not bear to look at her Do not rest in peace.

This time the victim had also been sexually assaulted, but no semen was found in her body.The time of death was between 4 am and 22 am on April 1.The cause of death was also mechanical asphyxiation, and there were obvious strangulation marks on his neck.

According to preliminary identification by the on-site forensic doctor, the body and clothes of the deceased had been washed after death, and the river water on the side should be used.In addition, the deceased's brand-name bag was next to him. In the bag, except for the mobile phone, the money in the wallet was also missing, but the credit card and brand-name watch were still there.

On the surface, this case is very different from Lu Bing's murder.

First, the murderer was more cautious this time. Not only did he not leave any semen, but he also deliberately washed the body and clothes of the deceased.

Second, the banknotes in the deceased's wallet were taken away, which is completely different from the previous practice of not taking any money.

Third, judging from the folding of the clothes and covering the face, the murderer expressed self-blame towards the deceased, which was absent in the previous case.

But the two cases also have something in common.

First, the deceased were all strangled to death after being sexually assaulted, and the marks on their necks were very similar.

Second, the cell phones of the deceased were all gone.

The final decisive evidence comes from the forensic doctor's report. According to the strangle marks on the necks of the two victims, it can be determined that the two were strangled to death by the same rope.

The forensic doctor said: "Just like the hemp rope used by children in school for skipping rope, there will be a section of rubber wrapped to increase weight and friction. This section of rubber is easy to break. The rubber of the two ropes is broken the same. The texture is the same."

Based on the above information, the two homicide cases were combined.The case was upgraded to a serial murder case.

As for the difference between the two cases, Cheng Bin explained: "The murderer has improved."

Just as we learn to walk and cook, murderers learn to kill.After the first murder, he may have searched for relevant information on the Internet, and improved his tactics and anti-reconnaissance methods in the second time.And the gap between the two times is so large, which fully proves that the first time was an impulsive homicide, and it may also be the first time to commit a crime.

The murderer wasn't ready then, now he's mature.