"But the question arises again, what is the suspect doing at the scene of the crime? Is it sterilization and disinfection? As she spoke, Zhang Mengjiao set her eyes on Zhang Mengqi's face. Pen, fun, pavilion www. biquge。 info

Zhang Mengqi exchanged glances with Zhang Mengjiao, and spread her hands.

In many cases, the suspect's modus operandi is also strange, and some seemingly inscrutable behaviors may just be additional actions by the suspect.

"Guoxian, do you have any other discoveries?"

"That's right, I collected a large number of plant cells and tissues around the spike shoe prints, and you analyzed and analyzed it, is it helpful to solve the case?" The old man said and pulled out another report.

"Plant cell tissue? Could it be the sawdust from spikes? After all, the site is laid with laminate flooring, so what's all the fuss about? ”

"The wood chips on laminate flooring are the product of high temperature and pressure, and there can be no cell tissue fluid. Some of the plant cells I extracted in the field had tissue fluid. ”

"Fresh plant cells?"

"Hmm."

"That's not surprising, there is a large forest behind the crime scene building, and it is normal for a gust of wind to blow in some plant seeds or something." Zhang Mengjiao didn't think it was useful to solve the case.

"It's not normal." The old man pondered.

"Brother Xian, can you not sell Guanzi?" Zhang Mengjiao urged.

"A large part of these plant cell debris is embedded in the depression of the spike shoe print, in other words, the debris was brought in by the suspect's shoes and not scraped into the room by accident. And in these plant detritus, I found two kinds of cell layers, the outermost layer of dead cells and the innermost layer of living cells. ”

"What does this mean?"

"If you want to understand it more thoroughly, here is some explanation about botany." The old man cleared his throat, and a few of us were very amusemented and did not interject.

"On the surface of the trees, we will find a phenomenon that the bark is actually waterproof."

As soon as he finished speaking, Xiao Jiao suddenly laughed, Zhang Mengjiao tilted her head to look at him, and laughed along.

"You two, listen to Guoxian's words, what are you laughing at." Zhang Mengqi tapped the table with a pen to signal us to be quiet.

Zhang Mengjiao and Xiao Jiao restrained their smiles, looking like good students who listened carefully.

Lao Xian went on to explain: "The reason why the bark is waterproof is because the young branches of the tree gradually grow xylem over time, and as the xylem divides, the cells thicken outward layer by layer, and the branches slowly thicken, and the outermost cells begin to divide, producing a kind of 'plug' cell, which has an impermeable substance in it, and they become hard and thick, forming the bark. In fact, the cells on the outside of the bark are dead. ”

Hearing the end, Zhang Mengjiao suddenly knew what Lao Xian wanted to express.

"You're saying that the suspect had climbed some kind of tree before entering the room, so he left this kind of plant tissue at the scene with dead cells on the surface and living cells on the inside?"

"yes, that's pretty much what it means."

At this time, Zhang Mengqi spoke: "If the suspect is climbing a tree trunk outside the crime scene, after a long time of walking, the plant tissue adhered to the sole of the shoe will fall off, and it will not remain at the crime scene in large quantities." This shows that the tree that the suspect climbed was very close to the scene of the crime. ”

"Is it the woods behind the unit building?" Zhang Mengjiao replied.

"Yes, only there are eligible."

"In other words, the suspect was lying in the woods in advance, ready to wait for the opportunity to commit the crime?" Zhang Mengjiao's mouth suddenly opened.

Zhang Mengqi closed the notebook:

"It's the best time of the day, hurry up and get the tools in the office, and today we must find the tree where the suspect stepped on, maybe there, the suspect left us a crucial clue!"

A few minutes later, we packed up and set off straight to the foot of the mountain in the mountain town community. There are no security guards in the community, let alone a gate to block it, and the investigation vehicle flashes police lights all the way and drives straight in.

There are nine buildings built along the foot of the hill in the community, with Building 5 at the scene of the crime as the midpoint, and four buildings in the east and west. The building is separated from the mountain by a row of green barbed wire about three meters high, which is connected in sections, and is supported by several inclined metal pipes on the side near the community, resembling the guardrails of a tennis court on a university campus.

The mesh of the barbed wire is very dense, and after measurement, the gravel with a diameter of more than three centimeters can definitely be blocked, but this thin layer of iron wire is estimated to be difficult to stop large pieces of rocks, and it is not difficult to see this from some places that have been bent by mountain rocks.

Due to the sparse population of the community and the fact that no one manages it, the entire row of barbed wire is covered with thick floating ash.

"Fortunately, the weather is good, and there is no snow, otherwise it would have been a problem for me." Zhang Mengjiao said as she took the folding ladder out of the equipment box.

"Xiao Jiao, Guoxian, you two go and help Mengjiao." Zhang Mengqi said with concern.

Zhang Mengjiao smiled knowingly, which was regarded as a thank you to her, and seeing Zhang Mengqi nodding at Zhang Mengjiao, Zhang Mengjiao pulled out the ladder with a smile.

Swish! With the combined efforts of Xiao Jiao and Lao Xian, the two legs of the ladder were pulled out to overcome the resistance. Although the ladder we use is printed with a tall "site investigation" logo, its essence is no different from the figure eight ladder used for ordinary decoration.

The ladder was erected, and Zhang Mengjiao was neatly dressed and climbed to the top.

The barbed wire fence in the residential area is similar to that in the school, and at the top is a cylindrical metal pipe about five centimeters in diameter, which is designed to facilitate transportation and installation.

The suspect had squatted on a tree outside the barbed wire fence and had to climb over it to reach the scene of the murder. Somewhere on the top of the barbed wire, the floating ash must have revealed the original smooth paint surface due to the suspect's scratching.

The barbed wire fence is more than three meters high, and it is impossible for ordinary people to reach the top, so only the suspect remains.

Sure enough, as soon as Zhang Mengjiao glanced at it, she found a metal reflection.

"There it is! Over here. Zhang Mengjiao hurriedly got down from the ladder and moved the figure-eight ladder to the west by more than 30 centimeters. This time, I brought a professional survey light and climbed the ladder again. When these two marks are looked at up close, the finger marks are clearly visible.

"Sister, latex glove print, this should be the suspect's climbing point, the five fingertips of the handprint are bent in the direction of the crime scene, indicating that he turned over from the woods." Zhang Mengjiao lowered her head and said.

"Okay, this confirms our thoughts, the suspect was indeed on the other side of the protective net on the night of the crime, and according to Guoxian's analysis, he should be squatting on a tree in the woods." Zhang Mengqi looked up and said to me.

"By the way, will you see if the suspect has any traces of turning it over?"

"I've seen it, but I haven't."

"There are no traces of turning out...... The suspect did not return to the woods after committing the crime...... Then he should have left the neighborhood directly. Zhang Mengqi muttered to herself.

"Xiao Jiao, is there any monitoring equipment around the community?"

"No, I've seen it."

"Oh." Zhang Mengqi was a little disappointed.

We don't know what the suspect looks like at the moment, or whether it's male or female, and the video is worth analyzing unless there is a specific target at a certain point in time. Take this case as an example, we analyze that the deceased died at about half past one in the middle of the night, if there is a surveillance device in the community and someone is found to be haunting the community at this point in time, then he may be a suspect, and the current dilemma is "blind walking, a smear".

"Mengjiao, you contact the criminal police team and ask them to visit and investigate along the perimeter of the community to see if there are any suspicious people after the incident, especially those with the smell of blood, and tell me in time if there is a situation."

"Okay." Zhang Mengjiao took out her mobile phone and quickly pressed a string of numbers.