Since Zhang Xiuwen and Wang Yuan'e were uncles and sisters-in-law, she would naturally be surprised when she learned that Zhang Pei's purchase of drugs was actually for Wang Yuan'e. At the same time, the relationship between the two was tense, so Zhang Xiuwen did not want to mention a word about Wang Yuange in front of Zhang Pei.
Ma Hongwen quickly figured out the reason why Zhang Pei said that the two people "definitely didn't know each other."
At the same time, the investigators also provided other important clues.
After technical appraisal of the indoor environment where Wang Yuan'e lived, it was found that there were no traces of outsiders' entry or exit. Ma Hongwen once instructed some investigators to continue to investigate outdoor clues, that is, to continue investigating in the community where Wang Yuan'e lived, trying to confirm the case. On the day of the incident, were there any suspicious persons entering or leaving Wang Yuan'e's home?
In Ma Hongwen's view, on-site traces always have the possibility of being "man-made", but it is unlikely that outdoor traces will be artificially changed.
According to the autopsy, Wang Yuan'e's death time was around 3:30 in the morning. Because the crime occurred so late, during the home visits and investigations, residents in the community said they were asleep at the time and did not see or know if anyone had entered or left Wang Yuan'e's home.
The community where Wang Yuan'e lives is of high quality and has monitoring equipment installed. However, in 2008, the monitoring network was not perfect. We could only see people entering and exiting the gate of the community through monitoring, but could not observe each unit building in detail.
However, through surveillance video, as long as someone is found within a period of time before and after the crime, even if he only appears at the gate of the community, this person is also suspected of committing the crime. In the middle of the night, when the crime occurred, others were sleeping at home, but you appeared at the gate of the community not far from the crime scene. If you are not suspicious, who is?
Soon, the investigators discovered a man walking out of the community in the surveillance video of that day. What surprised the investigators even more was that although the scene was pitch black and the man's face could not be seen clearly, under the illumination of the headlights at the entrance of the community, the surveillance video clearly captured the license plate number of the vehicle the man got into.
Based on the license plate number, investigators quickly tracked the man.
After investigation, it was found that the man was not a resident of the community, so what was he doing before he came out of the community? The suspicion of his crime has further increased.
During the interrogation, the man responded with silence when faced with this question from the police. The suspicion of committing the crime has obviously increased.
Finally, when the interrogator casually asked the probing question "What grudge do you have with Wang Yuan'e, and why do you have to kill him?", the man was shocked and turned pale before revealing the truth.
According to the man, he was leaving his girlfriend's house and returning to his own home. Because my wife was on a business trip, she suddenly changed her schedule and suddenly came home, but she didn't see anyone else. I called him and asked him what he was doing. He said he was playing cards and said he would go back soon.
At the same time, because her girlfriend’s husband also works in the public security system, her girlfriend once mentioned to him that her husband seemed to suspect that she had someone outside.
Therefore, when facing the aggressive police officers, the man's first thought was: This may be a "trick" used by his girlfriend's husband. As long as he doesn't admit it, this kind of thing is not to catch women. They were in bed, and no one could do anything to them.
That night, the husband of the man's girlfriend went to a different place to go to the police.
After investigation, it was found that what the man said was true.
After the farce ended, Ma Hongwen proposed a new investigation direction.
Since there were no traces of a struggle at the scene, assuming that Wang Yuan'e's murder was a "homicide", it is more likely that the murderer was an acquaintance.
At the same time, the "murderer" did not appear in the surveillance video of the community gate. Combining the two, if there is a "murderer", then before the crime, the "murderer" most likely used the identity of an acquaintance and appeared in Wang Yuan'e's neighborhood. This can only be achieved on the basis of being fully familiar with the community environment and knowing the blind spots of community gate monitoring.
During the original home visits, when the investigators asked the residents about the situation, they of course not only asked them, "Have you seen any suspicious persons entering and exiting Wang Yuan'e's house on the day of the incident?", they also asked other questions like this Questions like "Does anyone usually come to Wang Yuan'e's house?"
But there is little gain in this regard. Just from the mouths of community residents
Li learned that before Wang Yuan'e became famous, several men seemed to occasionally appear in his home. As for what these men look like, ghosts still remember, but only ghosts know their names.
On this basis, Ma Hongwen arranged to sort out Wang Yuan'e's social relationships, focusing on investigating acquaintances who were relatively close to him, trying to identify people who had visited Wang Yuan'e's home.
He was an acquaintance and had visited Wang Yuan'e's house. Only those who meet these two conditions at the same time are suspected of committing a crime. This is another of Ma Hongwen's investigative ideas.
Wang Yuan'e has no fixed job and makes a living by renting out the storefronts and real estate left by his parents. He can be considered a moderate "renter".
Therefore, the police can only understand, contact and find people who are close to Wang Yuan'e, including Wen Tao, based on Wang Yuan'e's growth experience and by visiting his hometown and school. After interviews, investigations and verification, these people had no motive or time of committing the crime, and were all eliminated as suspects one by one.
At the same time, it was confirmed that the "several men" mentioned by the residents of the community were among the relatives and friends who were excluded from the suspicion of committing the crime.
Therefore, the clues of visiting and investigating among the residents of the community were interrupted. Ma Hongwen's other investigative direction seems to be aborted.
Among the many investigators, there was a person named Duan Ming who had further opinions based on the investigation ideas given by Ma Hongwen.
Duan Ming believes that based on the fact that all traces of outsiders' entry and exit at the scene have been removed and that he successfully avoided surveillance equipment before and after the crime, the "murderer" should have a very high level of anti-reconnaissance, which fully reflects his ability to cover up. The specialized ability of "Murder".
There is no doubt that ordinary people do not have this ability.
Therefore, the "murderer" is most likely not only an "acquaintance" of Wang Yuan'e, but there should also be "professionals" invited or hired by "acquaintances", or as Wang Yuan'e's acquaintances, he himself has the " Mature experience", you can do all this independently.
Judging from the investigation of Wang Yuan'e's few relatives and friends, they are all ordinary people, have no criminal records, and have sufficient alibi witnesses and material evidence.
If the crime is committed alone for an acquaintance, then this person should not be among the target groups investigated by the police.
In any case, it is also possible that Wang Yuan'e's acquaintance hired "professionals", or "professional killers" to help.
While other investigators continued to track and investigate Wang Yuan'e's relatives and friends, Duan Ming decided to try to verify the idea that Wang Yuan'e's acquaintance hired "professional" help.
As an acquaintance, he knocked on Wang Yuan'e's door in the middle of the night, and then looked for opportunities to put an excessive amount of alcohol in Wang Yuan'e's water glass or drink. After he drank and passed out, he followed him all the time. The "professional" standing outside Wang Yuan'e's house called in. He was responsible for hanging Wang Yuan'e on a rope, completing the process of faking "suicide", and was responsible for removing relevant traces from the scene.
This person could even come in openly and greet Wang Yuan'e as a "friend of a friend", and then work with his employer to disguise "murder" as "suicide" under Wang Yuan'e's nose.
The more "advanced" people like "professional killers" are, the more they will "step in" near the scene before committing a crime and become familiar with the environment. This is an inevitable requirement for professionalism. This person did not appear in the surveillance video in the short period of time before and after the crime was committed because he was already fully familiar with the community environment and knew the surveillance blind spots.
But before that, is it possible that the "murderer" appeared in the video without fully grasping the location of the community surveillance? No one is sure.
Even if they appear, it is too difficult to identify who is the suspect in the video of people coming and going.
Duan Ming thought it was necessary to give it a try. In his opinion, handling cases is the same as taking an exam. Sometimes if you want to get good grades in the exam, you need a clear mind and good luck.
Duan Ming retrieved the surveillance video of Wang Yuan'e's community, and then sat in the office alone. After watching it all day and night, he finally noticed a man riding a battery-powered bicycle and wearing a red dress.
woman. This woman is obviously wearing a dress, but she is also wearing gloves and a hat. This kind of dressing up is really strange.
What's even more strange is that this woman only appeared twice on the third day before the incident, at around 1 noon and around 5 pm, and never appeared before or after. In other words, this person is most likely not the owner of the community, but to be sure, further home visits are needed to verify.
Although the property management staff and residents of the community looked at the video screenshot of the woman held by the police, they all said that they had never seen any woman in the community dressed like this before. But no one is sure whether this woman is a resident of the community. After all, the woman's face was not exposed. With just a red dress, gloves, and hat, no one can be sure. .
At this time, other investigators raised questions, saying that maybe this woman was a relative or friend of some family who came to visit her at noon and afternoon, and then the owner who was visited happened to not be at home when we visited and investigated.
Some people also suggested that maybe the woman in red was a resident of the community, but she had just moved here not long ago, so no one knew her. And when we visited and investigated, she happened to be away from home.
These hypotheses all explain the strange behavior of this eccentric woman, and such a possibility does exist.
In the end, Duan Ming eliminated all doubts with a bunch of cucumbers.
This woman always keeps a bunch of cucumbers in the basket at the front of the electric scooter she is riding.
