The difference between a scalpel and an ordinary knife is the material, as well as the sharpness, in short, the wound caused is absolutely different.

Ordinary people may not be able to see the difference, but as a forensic doctor, Zhang Yu can clearly see the situation around the wound through a microscope, and then distinguish what kind of murder weapon is used.

Xiao Ning pondered, now it can be determined that the murderer understands medicine and has a scalpel, so it seems that surgeons are the most likely profession.

Zhang Yu continued: "Boss, the missing heart and kidneys were taken intact. ”

Yin Zetai took over, "In other words...... Can I get another transplant? ”

"That's right."

Xu Xingteng slapped the table, "I know, it must be a device. Official Sales. The murderer takes a man's vessel. Official, sell it at a high price, that's why you killed so many people, so that everything can make sense. ”

No, it doesn't make sense.

Xiao Ning can't agree with this point of view, if it's really just for the sake of the device. Officer, there are many places to choose from, and even the disposal of corpses can be more professional. You can throw the body, bury it, etc., there is no need to throw it in a crowded place like a school, it is easy to be found, and the risk is too great.

Unless, the reason why the murderer chose to dump the body in the pool is because it is closest to him and at the same time more convenient.

In this case, the murderer should be someone from the school, or live in the vicinity of the school.

Going around and around, it seems to be back to square one.

Xiao Ning stood up, "Come with me to school one more time." ”

This time, he didn't choose to ask anyone, but instead looked around the school.

In fact, as described by the principal and the security guards, the school is enclosed in four walls, all of which are very high, and there is an electrical grid to prevent people inside and outside the school.

In order to ensure the safety of students and academic performance, No. 1 High School really put a lot of effort into getting such things as power grids.

Because the electricity is not very strong, it is not afraid that the students' lives will be in danger, but it can play a good warning role. Even those parents are very much in agreement.

Yin Zetai said: "I heard that the money used for these power grids and fences is still sponsored by some wealthy parents, and they really treat their children like birds in a cage. ”

Xiao Ning didn't answer, but slowly stretched out his hand.

"What are you doing? Boss, this is powered! As soon as Yin Zetai's words fell, the somewhat pale and emaciated finger had already touched the power grid.

No response, no feeling at all.

Xiao Ning turned his head to look at him, "Is it really powered on?" ”

Yin Zetai took out the phone and asked the security guard, and finally learned that there was no electricity, and today because the criminal police team arrived and there were no students, the power grid was deliberately turned off.

Xiao Ning looked at his finger, "Let him open it." ”

Yin Zetai said into the phone: "Let's turn on the power grid first." ”

He didn't hang up until the security instructions had been opened.

Xiao Ning stretched out his hand again, and Yin Zetai stepped forward and pulled him back, "I'll come." ”

After saying that, he poked his finger directly at the power grid.

Yin Zetai's eyes widened, "There is no electricity, there is a problem with the power grid here!" ”

Is it man-made, or is it natural damage?

Xiao Ning looked at the wall, wondering if the corpses had been carried from here again and again, and what they had experienced before they died......

"Boss?" Yin Zetai shouted twice, and Xiao Ning finally came back to his senses.

"Shall we go?"

"Let's go, call someone to check the power grid here, see if it's man-made damage, and when it's damaged." After Xiao Ning finished speaking, he strode out of the abandoned sports field.

Another hour later, the news came.

"The power grid was artificially damaged, cut off from the outside, but when it was, this is not clear, but from the point of view of the degree of rust of the fracture, it was at least half a year ago."

Xu Xingteng repeated, "Boss, it seems that someone should have entered from the outside to throw the corpse." If we don't have to investigate the surrounding area, we might find something. ”

Xiao Ning nodded, of course he couldn't let go of the investigation. The process of solving the case has always been through a lot of screening before you can finally get the clues you want.

However, he prefers that the murderer is someone from inside the school, and if it is someone from the outside, transporting the body outside the school wall, even if it is late at night, someone may pass by.

The first high school is located within the city limits, and there are all kinds of small restaurants and stationery shops behind it, and it is normal for people to be there in the middle of the night.

Xiao Ning raised his head and looked at Li Ke, "Go check the surveillance footage around the wall behind the school." ”

If the body had been thrown in from the outside, the murderer had done it a week earlier, and perhaps something would have been discovered.

"Okay." Li Ke walked out and began to call up the surveillance.

Everything seems to be going according to plan, but in fact there are not many useful clues.

First of all, the murderer may be a surgeon, or he has a lot of knowledge about medicine, and maybe he has clinical experience.

Secondly, the murderer was able to transport the body of a man with a height of 1.8 meters to the swimming pool, whether from the outside or from the inside, there was no way to use any tools, and he could only carry it with his bare hands.

The physical characteristics of the murderer should be male, at least more than 1.8 meters tall, and weigh more than one hundred and five, so that the physical strength will be sufficient.

Of course, people who are born with great strength and have undergone special training are not excluded.

There is also the possibility that the murderer is a woman, which also accounts for 30 percent.

Xiao Ning continued to sort through all the clues he knew so far, trying to put them together.

From the deceased's side, he was strangled to death and there were drug residues in his body.

He raised his head and called Xu Xingteng, "Go and ask Zhang Yu for the specific names of the drugs in the deceased's body, and find out when these drugs were sold and who bought them." ”

There are almost no such medicines in pharmacies, and they can only be purchased in hospitals, and they must have a prescription from a doctor, and the information of the person who bought the medicine can basically be found.

However, he didn't have much hope, in this society, money can do a lot of things, including getting some things unknowingly.

Without waiting for Xu Xingteng to walk out of the office, Xiao Ning's voice came again, "Also, check if there is any theft from the hospital pharmacy, but all pharmacies that have this medicine should be checked." Don't limit yourself to the recent, a year ago, even if it was two years ago, find out for me. ”

Xu Xingteng's face was a little embarrassed, "It's been so long, I don't know if I can find it, I can only say that I will try my best." ”

After he walked out, Xiao Ning got up and lay on the sofa, and the consequence of using his brain too much was that he was in some pain. Fortunately, he has been resting well at home these days, otherwise according to the state after the previous hypnosis case, I am afraid that his head will blow up now.