After committing a thousand perfect crimes, he joined criminal investigation

Chapter 27: Test your skills and measure the flow rate

"By the way, Gao Yi, Wang Yue's autopsy results have come out~"

Just as Gao Yi was thinking about where the deceased's face was cut off, Chen Leer suddenly spoke.

In the morning, after the forensic doctors arrived, they completed the investigation of the scene and immediately organized manpower to transport the body to the Municipal Bureau of Inspection Department.

Not long after the medical doctor and his party left, they received a second report.

As a result, Wang Gang immediately decided to collect blood samples from the deceased and quickly sent them to the city bureau for DNA testing.

Two murders occurred in one day, and the methods of committing the crimes were extremely similar. Anyone could realize the seriousness of the case.

For this reason, the city bureau gave the green light.

That's why they were able to get DNA data so quickly and identify the second victim.

"How to say?"

Gao Yi didn't think too much and asked immediately after hearing this.

"Wang Yue's death time was around 7 o'clock this morning. There were no traces of blunt force blows on his body, but venomous snake venom was detected in his blood. It was initially determined that he was bitten by a venomous snake like a cobra.

During this process, the body of the deceased quickly became paralyzed and his organs rapidly failed. "

As Gao Yi analyzed, Wang Yue was bitten to death by a poisonous snake.

"In addition, judging from the cutting marks on the face, the murderer used a curved planer." Chen Leer said again.

"Planer..." Gao Yi frowned slightly.

This kind of thing is so common that there is no place to look for it.

Then Gao Yi asked: "Where is the blood found on the steering wheel?"

According to his judgment at the time, the blood found in the middle of the steering wheel was probably left unintentionally by the murderer.

"The city bureau sent additional personnel to conduct a blood test. The DNA comparison did not belong to the victim Wang Yue. Unfortunately, the corresponding person was not found in the database."

When Chen Leer received this answer, she felt a pity in her heart, and she sighed repeatedly when she said it.

He was so close to catching the murderer.

"Is it the thief's?" Gao Yi asked again without much emotion.

"Forehead?"

Chen Leer and Wang Gang obviously didn't expect Gao Yi to ask this, but they soon understood what Gao Yi meant -

Based on the traces of blood at that time, it can be concluded that it was left not long ago.

During this process, only the murderer, the victim, and the thief entered the car.

Therefore, if the blood does not come from the victim and is definitely not from the thief, it can only be left by the murderer.

Later, it can be used as evidence to identify the murderer.

"I'll make arrangements when I get back."

Chen Leer, who wanted to understand, said immediately.

"it is good."

Gao Yi hummed, squatted down, and observed the corpse.

Then Gao Yi looked towards the river:
  "The flow velocity is about 1.5m/s. The victim weighs between 75kg. As for the stone..." Gao Yi took the stone in his hand and shook it: "About 30kg."

"Captain Wang, what is Gao Yi doing?"

On the side, listening to the numbers that kept pouring out of Gao Yi's mouth, Chen Leer blinked and finally asked Wang Gang in a low voice.

After all, Wang Gang has seen the world, and after hearing this, he explained:
  "This is not the place where the murderer dumped his body. Gao Yi is probably speculating on the real place where he dumped his body."

"Guess where the body was dumped?"

Chen Leer's eyes widened in disbelief: "Can this also be inferred?"

"It is said that some criminal investigation masters can do this." Wang Gang said.

He looked calm at the moment, but there was already a turmoil deep inside.

Because he knows very well that there are too many factors that need to be considered in this method, and it cannot be concluded by a formula.

And often those who have this method are master criminal investigators who have been working in the criminal investigation circle for decades, have rich experience, and have solved countless cases.

Is it really possible for Gao Yi?

However, Gao Yi didn't know what Wang Gang was thinking at this moment, and could only hear him mutter:
  “按照100公斤计算，且考虑到石头下坠的影响，5——7天的死亡时间……抛尸地点应该在上游100——120米范围内。”

This kind of calculation skill is simply child's play for Gao Yi.

It is indeed a necessary skill.

At this moment, Gao Yi stood up and looked forward along the river.

I saw a small forest 100 meters away and a dense patch of thin bamboo. They were all wild and no one took care of them.

On the side, Wang Gang and Chen Leer also followed Gao Yi's gaze.

But the next second, Gao Yi suddenly looked towards the other side of the river a hundred meters away:
  "Captain Wang, I'll go over there and have a look." "Let Le'er accompany you." Wang Gang hummed and motioned for Chen Le'er to help.

Although he didn't quite believe that Gao Yi could really calculate the accurate dumping point, but now that there were no more clues, he could only treat the dead horse as a living horse doctor.

What if?
  "Xiao Gao, does the Feicheng Police Academy even teach the calculation of the dumping point?"

On the way, Chen Leer couldn't hold back after all and asked curiously.

"I learned it all from books."

Gao Yi is not stupid, so he will naturally not say that he has mastered these skills in practice.

So he replied vaguely.

After that, in order to prevent the other party from continuing to ask questions, Gao Yi pointed to the small woods ahead:

"We don't rule out the possibility that the murderer dumped the body in this area. Sister Xingleer is here to investigate.

I went to the other side of the river. "

"it is good."

Chen Leer nodded.

So the two soldiers divided into two groups.

On the other side, Wang Gang led others to continue exploring the site.

Wei Qiang was questioning passers-by and calling in surrounding surveillance cameras.

Half an hour later, Gao Yi found an earring in the grass on the other side of the river.

Moreover, dragging marks were found around the earrings, along with a series of clearly visible footprints.

At this point, the real dumping point was determined.

So Gao Yi called Wang Gang and others.

On the other side, comrades from the identification department from the city bureau took the victim's body back for examination.

……

Two hours later, the group returned to the Criminal Investigation Brigade.

"Each of us will sort out the clues we found and hold a case seminar in an hour."

After Wang Gang gave the order, he went straight to the office of captain Shi Haoran.

Gao Yi and others also started to get busy.

During this period, Wu Jianzhang sent the results of the investigation to Gao Yi, and together they watched the surveillance video brought back from Wang Yan's tattoo shop.

Unconsciously, an hour passed, and several people from the Sixth Squadron gathered in the conference room——

"Wei Qiang, tell me what you gained there."

In the conference room, Wang Gang first looked at Wei Qiang.

"Yeah." Wei Qiang hummed and stood up:
  “In the morning, at the Linhuai River crime scene, I mainly asked the onlookers, and three people saw a suspicious-looking person, whose description was basically consistent with the thief’s description.

But unfortunately, there were only two cameras in that film, and neither of them captured any trace of the murderer.

At noon, I visited two snake farms in the county. One was run by a middle-aged couple, and the other was run by a young man. There was no one who fit the characteristics of the murderer.

And both families stated that the venomous snakes they raise are mainly used to collect venom and are not sold to the outside world..."

Wei Qiang reported the investigation information.

After it was over, Wang Gang nodded with satisfaction, then looked at Gao Yi: "Come on, Gao Yi."

"it is good."

Gao Yi did not refuse.

I saw that he first sorted out the photos in his hands, picked out a few and spread them out in front of everyone.

"This is?"

Wang Gang picked up a photo in confusion.

The photo shows a tattoo shop, including the entrance of the tattoo shop and part of the road.

Just as he was wondering, Gao Yi asked: "Captain Wang, do you still remember what happened at the tattoo shop of the deceased Wang Yue and Wang Yan?"

"remember."

Wang Gang nodded: "If you hadn't provided this clue, we wouldn't have been able to find out what the two deceased people had in common so quickly."

That is to do something wrong and cause people to be angry.

On the side, Wei Qiang couldn't help but ask:

"What does this have to do with the photo?"

　Regarding the DNA test results coming out on the same day, in order to keep the story compact, the time for the results was written relatively quickly.

　　But what I checked at the time was that in my country, the fastest time to successfully compare DNA to solve a crime is 6 hours. There should be no big problem~
  　　Finally, I would like to thank all readers for your great support. The author bows~
  　　
  　
  (End of this chapter)