The murderer is a left-handed person!
Su Ming's conclusion made Xu Changsheng stunned.
then.
Then he quickly leaned forward and looked at the screen, his face full of surprise and confusion.
"No, Xiaoming."
"How did you determine that the murderer was left-handed?"
"As for that."
"The muscle texture and cuts of a cooked corpse, don't they have a certain randomness? Can they be used as clues to infer something?"
It's obvious.
Su Ming determined the murderer's dominant hand by the cuts and texture on the victim's body.
at this point.
It was truly beyond Xu Changsheng's understanding.
because.
In criminal investigation.
Judging the murder weapon and direction of attack by the victim's wounds is a technology that exists and is also a commonly used technique in solving crimes.
but.
This dismemberment case at Shanghai University has a notable premise.
That is it.
The victim's body was cooked in advance and then cut into small pieces.
Xu Changsheng has never seen...
in this case.
You can also judge the murderer's dominant hand by the texture and incision!
......
Looking at Xu Changsheng's astonished expression.
Su Ming was not surprised at all and had even expected it.
because.
Looking for clues through the cooked corpse's muscles and textures is beyond the capabilities of normal detectives.
In real criminal investigation.
It is also extremely difficult, or even impossible, to determine the murderer's dominant hand.
because.
When the murderer commits a crime, he basically does whatever is natural, convenient and will achieve his goal.
Even if the murderer in a certain case is left-handed.
However, in order to achieve the purpose of killing, it is very likely that when the person sees that the right hand is closer to the murder weapon, he or she will directly pick it up and attack the victim under the influence of adrenaline.
Handedness is extremely difficult to determine because there are so many uncertainties.
Like a TV show.
It is absolutely impossible to determine the dominant hand just by looking at the wound.
If Su Ming had not used various methods of killing in an attempt to commit a perfect crime, he would not have noticed such details.
It is even more impossible to be so confident that...
The murderer was left-handed.
now.
Su Ming pasted two different photos of the victims’ bodies in front of the screen.
"Brother Sheng."
"It sounds incredible to get clues through muscle texture and incisions, but let me explain it briefly..."
"Now you know why I came to this conclusion."
Speaking of this.
Su Ming did not hesitate at all and pointed his finger at the photo of the victim's body above.
This photo.
It was the first bag of the victim's body parts found, the one that the sanitation worker took away and almost consumed as cooked beef.
"Brother Sheng, please observe carefully."
"In this photo, the muscle texture of the victim's body is obviously darker on the right and lighter on the left, and the incision is also clearer on the right."
“You can imagine it in your mind.”
"At this point, a large piece of meat is placed on the chopping board. When a normal person cuts the meat, they will definitely use more force at the beginning because they don't need to worry about the knife hitting the chopping board."
"When you get to the last point, you will subconsciously hold back to avoid making too loud a sound."
"This is everyone's inertia, or subconscious behavior. If you are in the murderer's environment, you will definitely pay more attention to the volume of the sound."
"This way of exerting and receiving force will result in the area where the force is applied being more distinct in terms of texture and cuts compared to the area where the force is applied."
"When the murderer dismembered the victim, he was actually more careful than we normally cut the meat, which definitely caused the uneven use of force."
"Now the body parts in the picture."
"The texture and cut on the right side are obviously clearer than on the left. According to the normal way of cutting meat, it is undoubtedly cut with the right hand."
"This information means..."
"When cutting up the victim's body, the murderer used his right hand to hold the knife."
This is an explanation from shallow to deep.
Xu Changsheng secretly took a deep breath, and then he placed his right hand horizontally and vertically into a knife shape, cutting downwards in the air, feeling the change in power.
result.
Just as Su Ming said.
Once you feel like you are about to touch the chopping board, you will subconsciously reduce your strength. This is the inertia of the human body that is difficult to overcome! ! !
After confirming that this clue can be verified.
Xu Changsheng sucked his teeth hard, put down the wolfberry water in his hand, and frowned even more.
"Xiao Ming, your method of judging the dominant hand by texture and incision..."
"I can agree with it about 90%."
"But I feel that the application scope of this criminal investigation technology is also very narrow. After all, there are not many suspects who can be like the murderer of the Shanghai corpse dismemberment case."
"They cooked the body and dismembered it so calmly. In most cases, they wouldn't have enough time to dispose of the body, but here we can confirm the dominant hand."
"but."
"It's strange. Judging from this detail..."
"The murderer's dominant hand should be his right hand, not his left hand. How did Xiao Ming get the clue that he was left-handed?"
Although the application scope of this criminal investigation technology is very narrow.
But now we have some tangible gains, including key clues found in the photos of corpses from twenty years ago! ! !
Xu Changsheng had to admit that Su Ming's talent for solving cases was truly astonishing and terrifying.
Having been a detective for so many years, he never thought...
You can even determine each person's dominant hand by the different strength with which they cut meat.
But he became more and more confused.
It is clear from the body parts that the dominant hand is the right hand, but why is Su Ming so sure that the murderer is left-handed?
Xu Changsheng didn't remain confused for too long.
Su Ming pointed to the photo of the corpse below.
This photo.
It was a photo of the victim's cooked head, displayed from multiple angles and looking extremely hideous and horrifying, enough to give ordinary people nightmares.
"Brother Sheng, look carefully at the cut on the neck."
"If you follow the technique we used earlier to determine the direction of cutting the body parts, you should be able to see it very clearly..."
"On both sides of the cervical spine, the muscle texture on one side is more obvious, while the other side is a bit blurry and unclear."
"But the direction is different from the previous corpses."
"The muscle texture on the neck is more obvious on the left side, while the right side is the result of the murderer obviously reducing his strength."
"From here we can conclude that the murderer held the knife in his left hand and cut up the victim's body and head. Now there are two completely different answers."
"When cutting up the body parts, the murderer held the knife with his right hand, and when cutting up the head, he held the knife with his left hand."
“It may seem hard to tell, but you only need to think a little to get the answer.”
"When cutting the body parts, since they are pure muscle, the murderer doesn't need to use much force. When cutting the head, because of the presence of the spine..."
"The murderer must exert greater strength!!!"
now.
There was no need for Su Ming to continue explaining.
Xu Changsheng slapped his thigh suddenly and said excitedly as if he suddenly realized something.
"When cutting hard objects or lifting heavy objects."
"Everyone will subconsciously use their dominant hand to provide greater power. This is inevitable."
"So by comparing the two things of cutting the body into pieces and chopping the neck bones, we can come to a very clear conclusion..."
"The murderer is left-handed, so he used his left hand to chop the bones."
"The reason why he used his right hand to hold the knife to cut the body parts was actually a deliberate cover-up to confuse the police and clear himself of suspicion!"
“But why do you deliberately hide your left-handedness?”
"Although there are fewer left-handed people among the general public, it shouldn't be necessary to deliberately hide it, unless..."
Speaking of this.
Xu Changsheng paused for two seconds, then looked at Su Ming with a gleam in his eyes.
"Unless..."
"This murderer's occupation is somewhat special, and with the fact that he is left-handed, it is easy to find him!!!"
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