Sun Jianguo asked again: "Is it possible that it is a ritual in a cult?" The pony's autopsy results mentioned that all the pieces of minced meat were of almost the same size, and it didn't seem necessary to make such a delicate effort if it was just to hide the evidence. ”

Liu Yefang paused when she heard this, looked through the autopsy report again, and said uncertainly: "The possibility is extremely low, if it is a religious ceremony, it should not be disassembled and thrown away." There is a paradox in criminal psychology that is very similar to this, whether the murderer in a homicide case is cruel first and then perverted, or perverted first and then cruel, which is a question that many masters of psychology are considering. ”

"For this case, I personally think it should be cruel first and then perverted, the murderer had premeditated, after forcibly having a relationship with the victim Liu Shuqian, he was afraid of being reported afterwards, so he simply killed the victim Liu Shuqian, in order to prevent the police from discovering clues, he simply did not do anything, and cruelly decomposed the body into pieces. Moreover, the murderer may have left biological characteristics on the victim's body, such as semen, or in the process of resisting, the victim bit a part of the murderer's body and swallowed human tissue into the abdomen, forcing the murderer to destroy his own biological characteristics. And in the process of dismembering the body, the murderer may have developed some kind of perverted pleasure, prompting him to break up each piece of meat into the same size. ”

Liu Yefang put down the autopsy report in his hand and signaled that he was done. Li Jun bowed his head slightly, closed his eyes, and after a few minutes, he opened his eyes and looked at me and said, "Your analysis is reasonable, Xiao Xu, you go and call Ma Zhiyuan, I have a task to give him." ”

I got up and walked out of the conference room in response, and I didn't go far when I suddenly saw Ma Zhiyuan in a white coat running towards me, so I stopped and asked, "Brother Xiaoma, why are you going?" Team Li is waiting for you in the conference room, saying that there is a task for you. ”

"It just so happens that I'm going to look for him too, and the time of the deceased's murder has been confirmed!" Ma Zhiyuan said with some excitement, and ran to the conference room after breaking free. When he was far away, I smelled the strong smell of corpses in the air, and hurriedly covered my nose with my sleeve, and at the same time admired him a little. I couldn't stand in the autopsy room, but he was able to work without interruption. On the way to the conference room, I remembered what Ma Zhiyuan said in the morning that the corpse had been frozen, and the decomposed minced meat slices were cooked at high temperatures, and the lactic acid in the meat slices had already decomposed, how did he judge the time of death?

Before I reached the door of the conference room, I heard Sun Jianguo's unbelievable voice from a distance in the room,

"The victim Liu Shuqian disappeared on July 3, and your identification result is that she died a week ago, so the victim survived for four days after her disappearance?"

I walked to the door and saw Sun Jianguo standing up and looking at Ma Zhiyuan very suspiciously, Ma Zhiyuan nodded excitedly, and replied affirmatively: "Yes, we conducted a rough analysis and comparison of more than 1,000 pieces of minced meat, and finally found that a few pieces of minced meat were raw meat, I immediately tested some of the substances in them, and finally concluded that the victim's death time was about a week ago according to the analysis of the concentration of residual substances." ”

Li Jun said to himself: "Liu Shuqian was not killed immediately after her disappearance, but survived for four days after that, and she should have been placed under house arrest by the murderer during these four days, and finally killed and dismembered her body." ”

Sun Jianguo seemed to remember something, and asked, "Didn't you say that the corpse was frozen?" Frozen corpses excrete lactic acid, and the decomposed pieces of meat are cooked, so it is impossible to judge the time of death? ”

Ma Zhiyuan quickly explained: "The corpse does have traces of being frozen, but when it was frozen, the victim was not dismembered, so the lactic acid discharged was limited, and I carefully analyzed the meat slices, and finally determined that the meat slices were not cooked, but were scalded by hot water and turned white, the surface of the meat slices was white, in fact, there was a layer of blood inside, and if the meat slices after 0.1 mm were cooked, there was no half-baked situation at all." ”

Sun Jianguo was blindsided this time, and asked again: "Why do you say it's hot?" According to our reasoning, the reason why the murderer broke down the body into more than two thousand pieces and cooked them was to erase the physiological characteristics that remained in the victim's body, if you follow what you said, this reasoning does not seem to hold. ”

"Vice, that was originally my reasoning just now, or should I be based on the actual situation." Liu Yefang hurriedly opened his mouth to dispel Sun Jianguo's doubts.

"I think the reason why the murderer is hot is not to erase the evidence left in the victim's body, but to do it as a last resort. As you all know, there is a lot of fat in the human body, and after death, the bacteria in the body cause the fat to break down. When the murderer was dismembering the body, the knife in his hand would inevitably slip after touching the fat, resulting in an unstable hand holding the knife, and even cutting himself, thus leaving further evidence. And the grease will stick everywhere, uncomfortable to see and feel, and even stick to the murderer's own clothes. However, when too much oil accumulates, it will cause the decomposition site to slip and affect the decomposition rate. ”

"The simplest and most practical way to remove grease is to use hot water, which is a common sense choice, use hot water to dissolve the oil produced when decomposing at any time, the higher the temperature of the hot water, the cleaner the grease is melted and removed, this is common sense, so the murderer also adopted such a method, which caused the phenomenon that the corpse parts we see "were boiled", in fact, the murderer kept using hot water to remove the grease when decomposing, and the real reason for the formation was that "the corpse was scalded by hot water many times", and it was definitely not put in the 'pot to boil' as many people inferred. ”

With Ma Zhiyuan's explanation, Sun Jianguo's frowning brows gradually unfolded, and finally looked at Li Jun and said self-deprecatingly: "Lao Li, it's our appearance." After the murder, the murderer who lives in the urban crowd, even if he is a perverted murderer, is in a hurry to deal with all the evidence, traces, and hide the process of the murder, how can it be time-consuming, labor-intensive, and meaningless to "cook" the corpse parts? Why are you "boiling" these corpses? Destroy the semen left in the victim's body? Then you shouldn't boil the corpse parts of the skin part? The argument that "the murderer purposefully cooked the corpse pieces" is obviously untenable. ”

"Yes, I didn't think of this just now, if it was just to erase the biological features left in the victim's body, the murderer could have taken the stomach or abandoned specific tissues alone in the process of dismemberment, and there was no need to laboriously cook all the meat slices." Liu Yefang also agreed with hindsight.

Li Jun didn't say anything after listening to the two of them, but asked Ma Zhiyuan to continue.

"Chemicals can also be used to remove grease, such as: caustic soda, laundry detergent, salt, etc., for the treatment of grease, caustic soda is the most commonly used, the best thing to use. If hot water is used, the hot water must be flowing all the time, but when using caustic soda, the corpse parts should be put together, add hot water, add caustic soda, stir, and put water to remove the grease. However, caustic soda has a consequence: it causes the surface of the treated object to corrode, and this property directly answers another phenomenon: the color of the skull is "red", not because of the "boiled" redness, but because the murderer used the method of using caustic soda to remove the grease and blood stains, which caused the skull to be red due to corrosion. This is the real intention of the murderer to use caustic soda, not to deliberately destroy the victim's face. Ma Zhiyuan finished speaking very confidently, and took out a stack of test report papers full of professional terms and handed it to Li Jun, Li Jun looked at it a little, and directly ordered:

"Regardless of the reasoning, let's investigate according to the results of the autopsy, Liu Yefang, Xu Jifeng, Zhang Bin, the three of you will be led by the deputy captain to immediately investigate Guo Chao in the city hospital, the home of Jin Weijia of Songhai University, and the home of Zhou's Paper who has been exposed to sodium hydroxide chemicals, Wu Shuangshuang, you take someone to bring Guo Chao and Jin Weijia back to the bureau, and leave personnel to block the scene, waiting for the deputy captain to go to check, In addition, I went to Zhou's Paper to find the employees who bought sodium hydroxide chemical raw materials that day and the people I came into contact with afterwards, and brought them all back. ”

"Wu Shuangshuang, remember to be captured alive, and, Lao Sun, it's up to you in terms of on-site investigation, the bathroom and toilet are the focus."

After getting the order, Sun Jianguo sorted out the police appearance and took the three of us to quickly clean up, mainly Zhang Bin's detection tools, and nothing else.

When he arrived downstairs, Zhang Bin took the initiative to ask to drive, but Sun Jianguo did not refuse, and said hurriedly: "Binzi, go to the city hospital to find Guo Chao first, and the rest will come one by one." ”

The siren sounded all the way, and when we arrived at the city hospital to find Guo Chao's residence, we found that the police in the jurisdiction had taken control of Guo Chao's house assigned by the hospital unit, and Guo Chao and his wife were sitting on the sofa under the control of the police.

"What are you going to do? There is no royal law, even if you are a policeman, you can't break into my door like this and control my personal freedom, I tell you, I'm a lawyer, don't use your tricks to scare criminals against me, it's not good. ”

When the four of us walked into Guo Chao's house, we caught a glimpse of the woman sitting on the sofa who was very emotional, waving her arms and pointing at a policeman and shouting at her. The woman's hair was scattered over her shoulders, and her lower abdomen was high and bulging, and it looked like she was pregnant.

Sitting next to him was a man with glasses, with a white face, slightly fat, and a white shirt, who kept accompanying the smiling face and explaining to the ugly policeman: "Comrade policeman, my wife is pregnant, and her temper has not been very good recently. Rest assured, if you have anything to investigate, my wife and I will fully cooperate. ”