Young detective case book

Meng Yanming chewed crisply in his mouth, and nodded with satisfaction: "It tastes good, I will buy it here next time."

After speaking, he put on latex gloves, waved his hand nonchalantly, and drove away the flies buzzing around the baby's corpse.

He took out an evidence bag from the toolbox, picked up a few maggots with tweezers and put them in.

According to the growth state of the maggots, the approximate time of death of the deceased can be judged.

Putting the insect repellent specimens beside the pile of small snack bags, Meng Yanming took out the measuring tape in the card bag.

Ye Zihui knew that this was to measure the basic value of the dead baby, so he didn't care about the discomfort. He tapped his dizzy head, pulled himself together, and took out a notebook to record it.

After measuring the length, head circumference, bust circumference, and waist circumference of the dead baby in sequence, Meng Yanming casually reported the corresponding figures like popping beans.

"Can you roughly determine how old this baby is?" Sun Qisen patted his shoulder and asked.

Meng Yanming shook his head: "I will give you the answer after returning to the bureau to finish the X-ray inspection."

Sun Qisen was a little disappointed, but didn't say anything.

He also knew in his heart that due to the obvious individual growth differences of infants and young children from the embryonic stage, the values ​​measured in various parts of the torso cannot be used as the basis for judging age.

Although Meng Yanming didn't look very prominent, he was always diligent and cautious in his work, and he would not easily say what he was not sure about.

Carefully flicking the dead baby's soft hair and examining her head carefully, Meng Yanming asked casually, "Suye, let me ask you a question. What is the standard recognized in international forensic science when judging a baby's age?"

Suye was staring at his movements intently, and answered without thinking: "Bones and the degree of bone formation."

"Then do you know how many bones there are in the human body? How many parts are they divided into?" Meng Yanming asked again.

Probably because he felt that this question, which even elementary school students knew, was too simple and boring, so he kept silent all day and night.

"Let me tell you..." After waiting for a while, seeing that he had no intention of answering at all, Meng Yanming spoke.

He has good intentions and really wants to teach Su Ye something.

There is no doubt that Suye is a very talented teenager in the study of criminal psychology and criminal behavior.

Meng Yanming knew that in time, Suye would definitely become a top criminal psychology expert in the country and even in the world.

Meng Yanming will not be surprised even if his future achievements surpass that of John Douglas (note 3).

For a criminal psychologist, mastering the necessary knowledge of forensic science will undoubtedly produce twice the result with half the effort when engaging in criminal psychology and criminal behavior research.

Su Ye was not interested in listening to his nonsense, and interrupted him slowly: "It is generally believed that an adult has 206 bones, which are divided into four parts: skull, trunk, upper limbs and lower limbs."

His voice sounded extraordinarily cold in the slightly cramped space.

"That's right," Meng Yanming nodded, and then asked, "You said 'generally believed', do you have other opinions?"

After being silent for a few seconds, Su Ye said lightly: "Actually, the statement of 206 yuan is only for the 'overall' of human beings around the world, and there are individual and racial differences among the population in this regard.

Chinese scientists conducted a large-scale sampling survey in 1985, and the survey results showed that, in fact, most Chinese only had 204 bones.

This is due to the fact that the fifth phalanx of most Chinese people has 2 bones, while Europeans and Americans have 3 bones.1 bone missing from each foot, so only 204. "

Glancing at the baby corpse in front of Meng Yanming, he continued, "As for children, they have more bones than adults.

Because children's sacrum has 5 pieces, when they grow up, they will meet into 1 piece.

Children have 4 or 5 coccyx bones, which grow into one as they grow older.

Children have 2 ilium bones, 2 isch bones, and 2 pubic bones, which merge into 2 hip bones in adults.

In this way, children have 11-12 more bones than adults, that is to say, there are 217-218 bones.

According to medical records, some newborn babies have as many as 305 bones. "

Sun Qisen opened his eyes wide.

In fact, except for Ou Yuchen, everyone else opened their incredible eyes wide open, even Luo Ziyang was no exception, looking at Suye in horror with the eyes of an alien monster.

After half a minute, Meng Yanming muttered in surprise and depression: "Are you not only studying criminal psychology, but also studying forensic science?

I remember that I know better than I. It was true that the back waves of the Yangtze River pushed the front waves, and the front waves were shot to death on the beach. Does this make people confused? "

Sun Qisen rubbed his stubble-covered chin, feeling secretly, this brat is really not a good stubbler, no wonder his colleagues in the bureau were played around by him, and his death was not wronged, not wronged at all.

After Suye slammed that long paragraph, he didn't notice other people's reactions at all, or he didn't care when he saw them, and stood next to Ou Yuchen, transforming into a wooden chicken again.

Being hit hard by him, Meng Yanming completely extinguished his thoughts of "being a good teacher". At the same time, he was also aroused, curious about how much he knew, so he couldn't help asking, "Can you tell me more about how to judge the age of a baby?" ?”

Su Ye replied blankly: "By examining which bones are there and how they are formed, we can make a relatively accurate judgment on the baby's age."

"Exactly," Meng Yanming became even more depressed, "Are you an encyclopedia of crime? How do you know everything?"

He just complained casually, but Suye replied solemnly: "I have read many books on criminology and forensic science. If you read more, you will naturally remember more."

Ye Zihui, who was already dumbfounded, wanted to hit the wall.

If you don’t bring such shocking things, you will know everything after reading the book. Is our police academy for several years for nothing?It's really embarrassing!

Meng Yanming also vomited so much that he wanted to vomit blood, he gently poked the baby's small head, looked at the bruises on her forehead, and said to Sun Qisen: "The corpse has mild * *, preliminary judgment, the death time is about three days.

There are obvious collision injuries near the temples on both sides. With the naked eye, I can't tell whether it is a concussion or a blow injury. "

He endured and endured, but he still couldn't restrain his curiosity or competitive desire, "Suye, can you give everyone a little more science, what is a concussion injury, and what is a blow injury."

Focusing on the baby's corpse, Suye didn't speak for a long time.

Meng Yanming finally felt more at ease, and said with a smile: "I have a few very good books, I'll show them to you sometime, it's always good to learn more."

Suye shook her head.

"Don't want to see it?"

After a few seconds of silence, Su Ye said slowly, "I think your book may not be of much use to me."

This guy is really...too conceited, Meng Yanming almost made him angry.

I just heard Su Ye say nonchalantly, "A concussion injury in forensic medicine refers to a contusion of the cerebral cortex on the opposite side of the force of a blow or collision.

A contusion of the frontal and temporal cortex due to a blow or impact to the occipital region.

Hemorrhages and contusions also occurred in the opposite contralateral brain tissue, but no scalp injury and skull fracture.

This is because, during the high-speed movement of the skull, the head suddenly stops, forming a brain injury at the scalp injury.

Due to inertial movement, the brain tissue on the opposite side hits the inner wall of the skull, causing bleeding and damage.

For example, the brain injury caused by the occipital landing on the frontal and temporal poles and their bottom surface during a fall is a concussion injury.It is generally seen when the head suddenly decelerates in a straight line after being subjected to external force during exercise. "

After a short pause, he went on to say, "To sum up, it is basically possible to diagnose the impact injury as an injury caused by the deceleration of the head, such as falling or hitting the wall with the head.

The so-called blow injury is a direct blow to the head with a tool, which will cause scalp and skull damage, bleeding and contusion of the subcutaneous brain tissue, but the brain tissue on the opposite side will not be bleeding and contusion, that is during the accelerated movement of the head can be formed.

So to put it simply, most of the injuries are caused by the victim's own mistakes or accidents.

In the case of blow injury, there must be an assailant. "

Taking a deep breath, Meng Yanming asked, "What do you think about this corpse? Is it a blow injury or a punch injury?"

Sun Qisen gave him a displeased look, obviously dissatisfied with his endless discussion of the case with Suye, but Meng Yanming was not Ye Zihui after all, and Sun Qisen couldn't say anything (don't doubt, this is the legend of bullying the good and fearing the evil!).

"I tend to be against the bruise." Suye thought for a while.

Meng Yanming remained silent, he and Suye had the same thoughts.

On the baby's face, where the eyeballs had been gouged out, there was only a hollow hole left. Meng Yanming methodically cleaned up the maggots, which were sticky and filled with the turbid liquid secreted by the maggots.

He said to Sun Qisen without raising his head: "There are no obvious bruises or signs of massive bleeding around the eye sockets, which means that the baby girl's eyeballs were gouged out after death.

At that time, her blood had stopped circulating, so there was not even the slightest bruising or hematoma in the orbital area. "

Ou Yuchen glanced at Su Ye, he remembered that Su Ye made the same judgment just by looking at it.

Meng Yanming did not try to remove the mucus from the eye sockets, but continued to look for traces on the corpse that could serve as physical evidence.

Carefully pulling the skin and musculature of the cut open wound on the baby's chest and abdomen, he cursed in a low voice: "Damn, this baby girl's heart is missing. Did we encounter a pervert with cannibalism?"

A pervert with cannibalism?Several people in the room looked at each other, feeling chills from the bottom of their hearts.

In the long history of mankind, there are many criminals who like to eat people.

Take, for example, the notorious American serial killer Albert Fish, whose nicknames were "Extreme Moonlighter," "Ria Werewolf," and "Brooklyn Vampire."

According to the analysis of criminal psychology experts, he is a sadist and a paranoid patient at the same time.

He actually took pleasure in doing evil, and found great satisfaction in a series of crazy and heinous crimes.

In addition to being a proven serial killer and cannibal, Albert was also a pedophile and paranoid.