Time: 7 o'clock in the evening of the next day

After Xie Yunmeng received Mo Haiyou's notice, it can be said that he took action immediately, and of course the reporter was also included in the list of possible threats to Yun Yeyao, and Xie Yunmeng could not let go of any possibility.

After arranging with Lao Zhao, the person in charge of the task force, the two decided to follow the method of forensic doctor Mo Haiyou, and immediately launched a large-scale search for the oak area again.

Mo Haiyou was also on his way to the oak area at the moment, and after finishing all the work at hand as quickly as possible, he immediately hit the road.

In Mo Haiyou's opinion, none of the four corpses were caused by external forces, whether they were divided or skinned, they were all after death, and from the skin of each corpse, Mo Haiyou more or less detected the arsenic content. Although the amount is very small, Mo Haiyou believes that these four people died of chronic arsenic poisoning.

Although arsenic is the main ingredient in arsenic, unlike arsenic, arsenic is not used as a poison, it is contained in various pesticides and illegal daily necessities.

Long-term use of daily necessities containing arsenic can lead to chronic poisoning, where toxins are deposited in the internal organs, while the residue in the skin is very small.

Mo Haiyou believes that these people are people who have been engaged in the production of illegal daily necessities for a long time, and the toxins existing in the raw materials gradually penetrate into the body from the outside of the skin and accumulate in the internal organs.

Another point is that none of these dead people have registered their identity information, so it can be said that they have been wandering on the edge of the city and have been in a state of illegal existence, so the murderers who killed them must also be among these people.

By extension, the killer may want to hide the signs of arsenic by peeling off the victim's skin, removing internal organs, or soaking the body in water for a long time.

The murderer has a certain knowledge of chemicals, is bold, and may also be an arsenic poisoner, which forms Mo Haiyou's initial impression of the murderer.

In the time when Mo Haiyou had not yet arrived in the oak area, Xie Yunmeng did not stop for a moment, he and Lao Zhao Bing divided into two ways, Lao Zhao not only sent a large number of people to search the surrounding areas of the oak area, but also personally led people to the reporter's home to investigate. Xie Yunmeng continued to conduct careful investigation and understanding of various murder scenes, extracted all dispensable evidence and clues, and prepared to bring them back to the police station for analysis and elimination.

The most important object of investigation at the scene is the traces left by the victim, but gradually, Xie Yunmeng's eyes were attracted by the garbage and ruins, some of the broken wooden sticks of all sizes can be spliced together, and the all-black plastic pieces that were washed away after washing the bloodstains were obviously white, and they were deliberately painted with black paint.

The mottled brown stains on the simple hut are very suspicious, and when the mud is scraped off, it appears as splattery brown spots. What's more, the joints of each plastic partition seem to have been newly spliced together, the gaps are large, and there are not many stains on the inside, which is obviously rebuilt on top of the garbage heap.

The doubts in Xie Yunmeng's heart became bigger and bigger, thinking of the abandoned factory that Lao Zhao said, Xie Yunmeng thought of a bold plan.

Therefore, when Mo Haiyou arrived in the oak area and saw Xie Yunmeng for the first time, he saw that this criminal police officer was in a large open area full of mud, directing many police officers to build house-like things out of disgusting waste materials.

What a smart person Mo Haiyou was, he quickly understood Xie Yunmeng's intentions, and walked over and asked, "Are you wondering if these waste materials were removed from that factory, right?" ”

"Forensic Mo? When did you arrive? Xie Yunmeng asked rhetorically, he really didn't notice that Mo Haiyou came to the scene at all.

"I've been watching you move for a while."

"Indeed, I had this suspicion, and I wanted to try it, and I always felt that the reporter did not need to lie, unless he was the murderer himself. By the way, did you find anything over there? ”

"All of the dead probably died of chronic arsenic poisoning, which means that the prisoner may have only disposed of the body afterwards without actually killing anyone."

"Will there be such a large amount of blood on the corpse after the fact?" Xie Yunmeng asked.

"The amount of blood shed does not mean that there will be very little after death, and if the body is dissected immediately after death, it is not surprising that a large amount of blood will be left at the scene, and it is certain that the prisoner is someone who often haunts the deceased."

"I still have a little judgment," Mo Haiyou said, "Judging from the depth and length of the knife on the deceased's body, as well as the degree of force, it cannot be ruled out that this matter was committed by a woman." ”

"Could it be that the reporter saw the girl who appeared at the scene as the murderer?" Xie Yunmeng was shocked, could a young woman do such a cruel thing? Then she was too bold.

"I'm just saying it's possible, but, Officer Xie, have you considered the feasibility of the current operation?" Mo Haiyou suddenly asked Xie Yunmeng.

Xie Yunmeng didn't understand the meaning of his words for a moment, and asked, "What is the feasibility?" ”

"With today's manpower, how long will it take to erect the abandoned factory you imagined? I don't think you'll be able to finish tonight. The same is true for the dismantling person, who cannot dismantle it in one night and send it to another site after destroying all the materials. What's more, he's still alone! ”

"This ......" Xie Yunmeng was a little discouraged when he heard Mo Haiyou's words, and said, "So we are doing useless work?" ”

"It's not useless, some things can produce optical illusions at night, you look at those cracked black simple sheets, why do you deliberately paint them black? And, you see. Mo Hai pointed to a broken wooden stick at his feet and said, "These pieces of wood have obviously been peeled off, and the spots left behind are much darker than the original color, maybe they were originally reddish-brown or a darker color." ”

"I suspect that the prisoners used reddish-brown wood and improvised black-painted boards to camouflage the iron fences of the factory, as well as blur vision. If you stay at night and look at a large black room, it is impossible to see how many walls there are, only two walls facing you, and the cover of darkness can make you think that it is a complete room. ”

"Further, if your attention is drawn to something even more terrifying, you won't even look closely at the two walls in front of you, just notice someone opening and closing the door and it will automatically create the illusion that this is a house."

"Oh, I see."

"Officer Xie, so we don't have to go through a lot of trouble to restore the factory, what we need to find should be the abandoned mud well that flooded the corpse, only this prisoner can't hide, even if it is landfilled, there will definitely be flaws."

Mo Haiyou's reasoning at the moment actually said Yun Yeyao's thoughts after meeting the reporter, of course, Yun Yeyao and Mo Haiyou thought the same, but the reporter told Yun Yeyao more information, so he thought a little more than forensics. The last remaining bit of reasoning is the reason why Yun Yeyao must insist on entering the oak area during the day.