"A person who was originally quietly studying in school, suddenly had a planned and premeditated crime to take revenge, commit murder, and commit a serial crime, except for Long Zhiyi, everyone else still has no one alive or dead, such a meticulous and meticulous revenge plan, if it is formulated and implemented by a student who has never committed a crime, is it too jumpy?"

"Isn't it logical to go from not being able to walk upright to suddenly being able to run like flying?"

Then, Li Zhudao drew a white connecting line between two points in time on the blackboard, pointed to this white line and said: "From June 2003 to July 2005, during this period of time, what should have happened to Wang Kang, causing his inner emotional and psychological defense line to collapse, and then committing a crime of passion, or committing crimes such as negligence and accidental homicide, and finally became a hidden case." ”

It should be this hidden case that allowed Wang Kang to find an outlet to release his emotions, and all the negative emotions accumulated before erupted like a volcano. Since he has already started killing, there is no difference between killing one and killing several more for him. Most of the perpetrators of serial homicide cases have such a criminal mentality. Because of this, he first targeted the people who had hurt him. ”

"In the process of committing the first murder, we can't be sure whether Wang Kang had a kind of pleasure in eating the marrow and knowing the taste. But the first case was committed, and it was lucky to become a hidden case. This is very likely to make him gradually calm down and review the entire murder process, summarize the details, seriously think about what conditions caused the murder to become a hidden case, and even reflect on what shortcomings there are. Then build on your strengths and avoid your weaknesses and plan calmly. ”

"From being emotionally and psychologically on the verge of collapse, to manslaughter or accidental homicide, to creating a missing person, or premeditated murder. Looking at it this way, isn't it coherent? ”

Li Zhudao stood in front of the blackboard and drew in circles, muttering to himself.

After a moment of silence, he continued: "The disappearance or murder of Huang Zui and others, let's first assume that it was indeed Wang Kang's doing. So did Wang Kang premeditate and carry out this series of cases purely out of revenge, or out of the pleasure of the murderous process, or both? Based on the available clues, we can't be sure for the time being. If Wang Kang's motive for committing the crime was the need to obtain the pleasure of crime, then how did he satisfy his pleasure after Huang Zui and others disappeared and were killed? ”

In other words, after Huang Zui and others, Wang Kang is very likely to have committed other crimes. And he remained at large until he jumped off the building and became a vegetative person, and his criminal behavior stopped. ”

Xiao Wu looked at the blackboard noted on the blackboard among Huang Zui and others, the last missing person He Xiaoyue disappeared in August 2007, and then Li Haidong jumped off the building in the Baituwen Community on October 21, 2019, and couldn't help but be shocked, if Team Li's speculation is true, then how many crimes has Wang Kang (Li Haidong) committed in these 12 years?

Li Zhudao snorted coldly and continued: "Let's continue to analyze Wang Kang's motive for committing the crime. If Wang Kang had caused the disappearance and murder of Huang Zui and others only out of pure revenge, then he should not have committed other crimes during the period from July 2005 to August 2007 when these four people were killed. Because his motive for committing the crime is clear, the goal is clear, and he will not commit the crime indiscriminately. ”

"But if there is a need for the pleasure of committing the crime among the motives of his crime. So at the same time that these four people were killed, could there be other victims? In serial homicide cases, a considerable number of criminals are motivated by the need to satisfy their own criminal pleasure, so they commit crimes indiscriminately, randomly select the targets of the crimes, and the time of the crimes has a relatively regular periodicity. ”

Li Zhudao circled the time of the disappearance or murder of Huang Zui and the other four people on the blackboard, thought carefully for a while, and continued: "Judging from the time when these four people disappeared or were killed, except for the time when Li Yi and Huang Zui disappeared one month apart, Long Zhiyi's disappearance and murder between these two people, and between the disappearance of these two people and He Xiaoyue, they are all one year apart, which is more regular. Is this law a coincidence, or is it Wang Kang's crime cycle? ”

"If it is Wang Kang's crime cycle, according to this clue, we must continue to trace Wang Kang's behavior after graduating from university, and if there are missing or unsolved murder cases in the public security organs where he lives and lives, and the time of these cases is about a year apart, then it is very likely that Wang Kang committed it."

Therefore, Lao Liu and Ouyang's task is to dig out Wang Kang's life trajectory from graduating from university to jumping off a building in Baituwen Community, that is, from August 2007 to October 21, 2019. And during this period of time, the disappearance cases and unsolved homicide cases of the public security organs where he lives must be brought back together. ”

August 2007 was the time He Xiaoyue disappeared, just a month or two after Wang Kang graduated from university. On October 21, 2019, Wang Kang jumped off the building, and before that, at around 0:00 a.m. on the same day, Wang Kang killed Wang Fang and mutilated her body.

"If the disappearance of Huang Zui and others is only a coincidence, then Wang Kang's motive for the disappearance and murder of these four people should be purely out of revenge. I hope so. ”

However, the disappearance of Huang Zui and others is a year apart, if it is another coincidence. For example, if he commits a crime every six months, or two months, or three months, and each case becomes an unsolved or hidden case, and Huang Zui and others are only a few victims in the many cases he committed, and at the same time, the time when Huang Zui and others disappeared and were killed happened to be about a year apart, and the victims we know are limited to Huang Zui and others, and we will mistakenly think that about a year is Wang Kang's crime cycle......"

Xiao Wu closed his eyes and shook his head, and said, "Team Li, this is a little scary. If this is the case, Wang Kang's crime cycle cannot be mastered at all, and the cases committed cannot be estimated. His psychological state must have been indescribably perverted, so to speak, he does not belong to the category of 'human', but rather a humanoid that walks upright with the pleasure of committing crimes. ”

Li Zhudao frowned and said, "Just because we haven't seen or heard about people or things doesn't mean they don't exist." Wang Kang is Li Haidong, we can basically determine this. Judging from Li Haidong's modus operandi against Wang Fang, do you think he still belongs to the category of 'people'? Wang Kang, or Li Haidong's state of mind, fits this assumption. ”

"The disappearance and murder of Huang Zui and others have been unresolved. More than ten years later, we also had sex with Wang Kang based on Huang Zui and others. This clue of the invasion, I wanted to interrogate these four people, only to find out that they had disappeared or been killed by too coincidence. What does this mean? It shows that Wang Kang is fully capable of creating unsolved or hidden cases. Therefore, for Wang Kang, I think there is only what we can't imagine, and there is nothing he can't do, or can't do. ”

Xiao Wu pointed to the words "Bai Tuwen Broken Corpse (October 21, 2019)" on the blackboard and asked: "Since Wang Kang has this ability, why did he expose his crimes in the WeChat group?" Also, did he kill Wang Fang and dismember the body out of the need to obtain the pleasure of crime, or was there an irreconcilable contradiction between their mother and son? According to clues, Wang Kang's dissatisfaction with his mother Wang Fang should have planted seeds in his heart more than ten years ago. ”

"Whether it is out of dissatisfaction with Wang Fang or out of the need to satisfy his own desire to obtain criminal pleasure, I think Wang Kang has enough ability to continue to make this case a hidden or unsolved case, which contradicts his behavior of exposing his own crimes." Li Zhudao said, "Wang Kang's motive for committing the crime has always been the biggest suspicion in this case. What exactly caused him to commit the crime and expose himself to the crime after committing the crime, according to the existing clues, it is impossible to deduce for the time being. ”

Li Zhudao then pointed to the words "Wen Tao and others raped Wang Kang (June 2002)" on the blackboard and said: "If the disappearance and murder of Huang Zui and others were indeed committed by Wang Kang, then Wang Kang's motive for committing the crime must have been motivated by revenge, and this can be basically determined." The question is, since Wang Kang took revenge on Huang Zui and others, what about Wen Tao? Why is Wen Tao still alive? ”

"Inform Xiao Wang and Lao Tu to find a way to pry Wen Tao's mouth open. Wen Tao gathered a group of people to perform sex on Wang Kang. Aggression, he should not still be alive. It is very likely that Zhang Jing's confession is only part of the incident, and Wen Tao must restore the whole picture of the incident. ”

Xiao Wu saw that Li Zhudao had no other arrangements, so he asked: "When we leave for Qinghe, should we be a few days late?" ”

Li Zhudao touched his forehead and said, "My headache is not so serious, just delay it for a day or two, let's go tonight." ”

According to the plan, Li Zhudao and Xiao Wu were originally going to Qinghe City to visit Li Haijun's spouse Qu Lulu.

According to the information obtained by Duan Ming, Qu Lulu is 31 years old, but before registering her marriage with Li Haijun, she had already registered her marriage 3 times, that is to say, Wang An (Li Haijun), who likes men, ended up marrying a woman who was married 4 times and gave birth to a three-year-old child. This seems paradoxical.

Qu Lulu's tone on the phone was lukewarm, perhaps because Li Haijun had passed away not long ago, and she had not yet recovered from her great grief, and in the face of Xiao Wu's questioning, she refused to answer on the grounds that she did not know much about Li Haijun's original family.

Li Zhudao and Xiao Wu originally intended to go to Qinghe, in addition to visiting Qu Lulu, they also planned to thoroughly investigate Li Haijun's social network in Qinghe. The family of three in Li Haijun's original family seems to have emerged from a crack in the stone, and there is cunning everywhere. This made Li Zhudao unwilling to let go of any opportunity to collect clues about this family.