Chapter 179 A One-Kilometer Road
Wang Changjiang and Shen Yan began to conduct further inspection of the corpse after Lu Chuan and others completed the investigation.
Different from the focus of current investigations, forensic doctors mainly determine the time and cause of death of the deceased through autopsy examination.
“Based on the degree of swollenness of the skin of the corpse, the deceased had been soaked in water for more than twenty-four hours.”
The degree of swollen skin of the corpse will vary depending on the time the corpse was soaked in water.
Wang Changjiang is a veteran in this field. He has dissected many corpses with blisters in the past and is very experienced in judging the degree of swollen skin on corpses.
Shen Yan listened carefully and took notes carefully.
Unlike Lu Chuan's cheating, Shen Yan's learning was step-by-step. She learned a lot from Wang Changjiang in the past two years.
"The degree of soaking of the corpse mainly depends on the eyes and fingers."
Wang Changjiang also deliberately taught Shen Yan: "The eyes are the easiest part to get water. The color of the eyeballs after being soaked in water It will become turbid and slightly convex.”
"The skin of your fingers will become wrinkled if soaked in water for more than ten minutes."
"Compared with the degree of swelling in other skin parts, you can determine the approximate duration of the blisters."
"Hmm," Shen Yan is obviously a good student who likes to learn. She records useful knowledge and asks questions from time to time: "Master, there are bite marks on the left ear of the corpse. You said last time that if the corpse has wounds, you can check the wounds after being soaked. How do you judge the time of blistering based on the erosion?”
Wang Changjiang twisted the head of the corpse: “Look here, the bleeding point has disappeared and burrs have begun to appear on the edges. This means that the blisters have been soaked for more than 20 hours. Characteristics."
"But the wound is not rotten, which means that the blisters have been in the wound for less than forty-eight hours."
Whether it is forensic medicine or field investigation, it is all an empirical science.
Theory is important, but experience is even more important.
With the same judgment criteria, the changes of the corpse will be different under different temperatures, different humidity, or different conditions indoors and outdoors.
At this time, only through experience can we make accurate judgments.
"Cause of death... The pinch marks on the neck were obvious, the lips were purple, and the face was blue and purple. There were no other injuries. The cause of death was initially determined to be mechanical asphyxiation."
The reason why Wang Changjiang was initially determined was because the final determination of the cause of death required an autopsy to give a final conclusion.
However, whether the body should be dissected or dissected requires the parents’ opinions.
In the cases Wang Changjiang has encountered over the years, most of the family members will agree to the autopsy in adult death cases.
The family members of some female corpses will disagree.
In cases of minor death, the vast majority of parents will not consent to an autopsy.
Of course, this presupposes that the medical examiner can issue an opinion on the time and cause of death without performing an autopsy.
Family members must also sign and agree.
For example, the deceased had taken certain drugs fed by the murderer before his death, such as sedatives. This cannot be found without an autopsy.
After taking sedatives, he was strangled to death. The cause of death was still asphyxiation.
But the sedation aspect was not performed because the family members did not agree with the autopsy, and an important clue was lost.
This may be the key to solving the case.
So, both parties must sign to confirm.
"Based on rigor mortis... the time of death is about forty-eight hours."
The child disappeared after going to school two days ago, and it was less than fifty years since the body was found. hours.
In other words, according to Wang Changjiang’s judgment, the child was killed about an hour or two after leaving home.
But the soaking time should not exceed twenty-four hours.
In other words, after killing the child, the murderer spent nearly a day and night before dumping the body.
Then the specific time of dumping the body should be between last night and early this morning.
This judgment also supports the judgment of the current investigation team. The area near the motor shaft is indeed not the first crime scene.
After the results of the on-site inspection and autopsy were reported to Qin Yong, all kinds of information were gathered, and Qin Yong could easily make the above judgment based on his experience. "Old Liu, I have to work hard for you."
Open the mobile phone navigation and zoom in on the nearby map.
"This is the child's home. Under normal circumstances, the child goes to school from here. Follow this road and walk about two kilometers to reach Zizitun."
"But Zizitun The surveillance camera did not capture the child.”
After the child was reported missing, the police from the Xijiao Police Station had gone through the surveillance camera and confirmed that no trace of the child was found.
"In other words, the places where the children disappeared are concentrated on a stretch of one or two kilometers."
"After the murder, the murderer hid the body and then dumped it from last night to early this morning."
< br>"Check this section of the road and see if we can do a detailed survey. Maybe we can find clues."
Qin Yong also had the attitude of giving it a try.
Based on the current clues, it can be determined that the murderer took action on this stretch of two kilometers.
But it’s not certain whether they killed people on this stretch of road.
It is very likely that the murderer first kidnapped someone, then went to another place to kill someone, then hid the body, and then dumped it in the evening or early morning while it was dark.
“This section of road, even if it is not the first scene, must be the first place where the murderer kidnapped the child, and...”
Qin Yong zoomed out the map, revealing the deliberately marked A red dot.
“This is the location of the motor shaft where the body was found, about three kilometers away from the section of road where the child disappeared.”
"The murderer will definitely hide the body after killing, Sun Jun!"
"Here!"
"With the well as the center and a radius of five kilometers, investigate all farmers living nearby!"
"Yes!"
"Ren Qiang, your group is responsible for investigating the situation of the children's parents. Do they have any enemies or people with whom they have conflicts? I want to find out everything about their family. Background!”
"Yes!"
Three groups of troops, at full capacity, advanced on three fronts.
Grape picking garden in spring.
Most of the grapes Wang Zihan’s parents planted were grapes for winemaking.
But in recent years, in order to increase income, some edible grapes are also planted near the road. During the harvest in autumn, people from the city will come to pick them.
It's spring now, the ice and snow have just melted, and the grapevines are still buried in the soil to keep warm. There are only endless rows of cement piles on both sides of the road, like lonely wild ghosts, standing motionless in the fields.
Starting from the vineyard where Wang Zihan lived, Lu Chuan, Liu Guodong and Lao Bai headed west.
"Brother Bai, use this. The searchlight can detect biological tissues that we cannot see with the naked eye."
This time, Lu Chuan and others can be said to be fully armed to the teeth.
Liu Guodong is holding a targeted biological trace discovery device, and Lu Chuan is holding an ultra-wide spectrum on-site trace evidence search camera.
What Lao Bai was holding was the laser evidence detector that Lu Chuan had just learned to use.
Looking at the spots that lit up from time to time on the screen, Lao Bai quickly collected the physical evidence that he had searched.
“This thing is really easy to use.”
Grinning, Lao Bai sighed with emotion: “If we had this thing before, there would still be so many backlogs.”
“It’s just...there are too many things discovered...”
(End of this chapter)