Jiang Yuan got Sun Jianyu's information, looked at it carefully, and had his hand and foot marks rubbed, and then compared them with the strangulation marks on the deceased.
Sun Jianyu is less than 1.7 meters tall and weighs just over 80 kilograms. He is a thin dog with a thin waist, thin legs, and thin arms. The victim, Sun Xiuwen, weighs about the same as Sun Jianyu. Although she is a woman, there is a slight difference in strength.
If you want to suffocate it to death, it would be difficult for Sun Jianyu to do it alone.
It’s no wonder that there were strangle marks on Sun Xiuwen’s neck. It was probably Sun Jianyu or Liu Mingxue who performed auxiliary operations. However, the fact that the victim’s hyoid bone was not broken also shows that the strength of the stranglehold was insufficient.
Of course, purely from the perspective of lack of strength, Sun Jianyu’s girlfriend, Sun Xiuwen’s best friend Liu Mingxue, is even less powerful. But based on common sense analysis, as a woman, Liu Mingxue took the initiative to resort to violence and oppression when she lacked strength.
The possibility of killing Sun Xiuwen is still low.
"From the current point of view, the two people should have conspired, with Sun Jianyu as the leader and Liu Mingxue as the assistant, to kill Sun Xiuwen together." Jiang Yuan stood at the crime scene, scrolled through his PAD for a while, and gave an answer that was not unexpected.
Forensic doctors have a very important job, which is to identify the real murderer in a murder case involving multiple people. A typical example is a group of young people fighting each other and someone dies. In this case, the person who bears the main responsibility is not the person who hit the most people.
The one who performed the fatal operation.
Suppose a wine bottle hit the back of the deceased's head, his heart stopped, and his thigh was pierced... Then the medical examiner must determine what the cause of death was. If it was the wine bottle, he would grab and smash the wine bottle. It was his thigh.
As for the one who stabbed someone, or...if he suffered a cardiac arrest, everyone would have to go to jail together.
Jiang Yuan determined that Sun Jianyu and Liu Mingxue committed the murder together. After being sent to the prosecution, there is a high probability that there will be no distinction between master and slave.
Meng Chengbiao listened on the other end of the phone and immediately responded: "I agree, Sun Jianyu must have been involved. Liu Mingxue can't escape either. Both of them are minors and their minds are immature. As for the results of the interrogation, I don't think so."
question."
"Okay, I'll leave it to you." Jiang Yuan identified the murderer, then walked carefully around the secret base of several people, and then returned to Changyang City with Sun Jianyu's motorcycle.
Although the rut marks at the second scene cannot be used to identify the identity, they can be used to rule it out. In this case, the means of transportation must be taken into consideration. Even if the specific motorcycle used cannot be determined, at least it must be proven that Sun Jianyu has the channels
Get the same type of motorcycle.
By the time they returned to the Changyang Municipal Bureau, Wang Chuanxing and others had almost prepared all the materials for handling the case.
The case itself is indeed difficult, but the difficulty is mainly focused on the environment. The heavy rain that night did wash away many things, including the footprints of Sun Jianyu climbing the wall. In the end, it could not be proved. Because the fresh footprints were washed away by the rain, but instead
There are some traces of age left behind.
On the other hand, the behavior of minors who are murderers is also very unpredictable. Including the motive of killing and the way to cover up the killing, they are all non-adult.
If he were an adult, not to mention whether he would kill someone because of the need to clean and tidy up the room. He would not even dare to throw away the pillow for fear of being discovered by his relatives, but could only wash and throw it away.
When the body was found, it would not have been abandoned on the roadside in a hurry, leaving such deep motorcycle ruts.
But to say that the two were brainless, they not only knew how to abandon the body, but also took off the victim's clothes and pants to pretend to be sexually assaulted.
However, Jiang Yuan paid very little attention to these details.
For Sun Jianyu and Liu Mingxue, their ability to resist interrogation is very weak. The current evidence is enough for them to recount the details dozens of times.
Yu Wenshu and others were even more satisfied. After receiving Jiang Yuan, they kept saying: "I didn't expect that this case was committed by two minors. Our case in Changyang City is still not perverted enough..."
"It's quite perverted." Shen Yaowei accompanied the whole process. Although he didn't play any role, he knew the case very well. He said: "Two minors quarreled over a trivial matter, and then my best friend and her boyfriend got together.
Someone was killed and the body was abandoned afterwards. If this case is not solved, in another 10 years, I don’t know how many victims will be unlucky."
Yu Wenshu nodded: "Not completely perverted."
"Thanks to Captain Jiang, our task force here has never pushed the case forward." Cao Chujun sighed with emotion. He is an old captain who is about to retire. He has taken things like face relatively lightly, and he is about to leave.
When I was there, I became more and more interested in solving a few big cases so as to appease myself who had been a policeman for 40 years.
Jiang Yuan smiled and declined. Although he himself assessed that the difficulty of this case was not high, it was difficult for him to say this in front of the former head of the task force, Cao Chujun.
But Cao Chujun saw it. Old detectives have a vision that may not solve the case, but can penetrate people's hearts.
Cao Chujun's heart was filled with excitement. He grabbed the opportunity before Yu Wenshu could speak and said, "Captain Jiang, there are actually a lot of abnormal cases, especially the backlog of cases. Some cases have been around for too long and are difficult to detect..."
This is straight hook fishing.
Cao Chujun looked at Jiang Yuan enthusiastically.
Jiang Yuan smiled, looked at Yu Wenshu, and then said: "Actually, I'm not pursuing any abnormal cases. I can solve some normal murder cases and the sense of accomplishment is also very prominent."
Yu Wenshu said at this time: "You carry more than 30 people with you. For ordinary cases, the cost-effectiveness is too low."
Jiang Yuan was stunned for a moment, but he didn't consider this.
Cao Chujun chuckled twice, read Yu Wen's book, and his tone became more formal, saying: "When it comes to these perverted cases, I think the previous 303 project is qualified."
"Project 303..." Yu Wenshu quickly recalled: "The deceased were the 31-year-old female Zhao Qian, the 28-year-old male Qin Jijian, and the 35-year-old male Gu Daxu... the three of them were doing three-person sports at Zhao Qian's house
At that time, he was hacked to death at home?"
"Yes, it's this case. You still remember the name of the deceased. It's really amazing..." Cao Chujun slapped the most vulgar flattery on the Changyang City Criminal Police Detachment, causing Yu Wenshu to burst into laughter.
"Project 303 is indeed a rather perverted case. The murderer is very skilled and cruel. He has not been able to detect it for seven or eight years. It's time to take another look at it." Yu Wenshu said, looking at Jiang Yuan and said
: "I guarantee that the scale of this case is much larger than the previous case."
"In fact, there is no need to pursue the abnormality or scale of the case." Jiang Yuan sighed.
"This case is quite serious." Cao Chujun changed the topic and said: "The murderer of this case entered through the security window of the balcony. The security window was opened by his hands. After entering, the murderer killed three people in a row.
The man was cleaned and left. His movements were very neat and his skills were very good. No bloody footprints or the murderer’s DNA were found at the scene.”
"Are all three of them single?"
"They are all married." Yu Wenshu knew what Jiang Yuan wanted to ask, and then said: "The partners of the three people have been investigated and there is evidence of alibi. In addition, the three deceased people had more than two sexual partners. There are some possibilities.
It’s still relatively secretive, and the case has never been able to identify a suspect.”
