Chapter 7 Case 5 suicide girl
As mentioned earlier, a large part of the daily work of a forensic doctor in a grass-roots public security organ is the preliminary handling of abnormal death cases (incidents).The forensic doctor's judgment on the manner of death of the deceased is related to the nature of the case (event).It seems simple, but it is actually a very complicated and responsible job.Song Ci, the ancestor of forensic medicine, summarized this kind of work in the book "Washing Injustice Collection". In seemingly ordinary deaths, through careful inspection, analysis, and exploration, we can clearly detect the traces of crimes and find traces of crimes. The key to clearing up the dead.
In order to prevent mistakes in abnormal death cases (events), most forensic doctors will treat such scenes and corpses with a very cautious attitude.Under normal circumstances, the forensic doctor will go to the scene of an abnormal death, investigate the scene, conduct a simple autopsy on the corpse, preliminarily rule out the possibility of homicide, find out what happened, and then transport the corpse back to the forensic center or funeral parlor. The dead body form is further inspected to prevent the omission of some clues that are not easy to be found.Based on the above-mentioned complete set of steps, the forensic doctor will provide a comprehensive report to the case handling unit, stating the cause of death and the mode of death of the deceased.The so-called mode of death refers to homicide, accident, accident, disaster, sudden death due to illness or suicide.
Every morning at 9 o'clock is the time for the forensic doctors of the Nanjiang Public Security Bureau's Forensic Medicine Center to conduct autopsy.The corpses pulled back to the center after showing up at the scene the day before will be uniformly examined at this time to further rule out the possibility of homicide.
It was a very peaceful day. There was only one scene of a female student jumping from a building in the second year of junior high school, and there were no other scenes.
The little girl was discovered by the old man doing morning exercises in the teaching building of Xinfeng Middle School.When we arrived at the scene at 8 o'clock in the morning, the little girl's rigor had already formed relatively hard. Combining with other corpse phenomena, it was deduced that she died at around 10 o'clock the night before, that is to say, she died at the end of the evening self-study. Died hours later.At this time, there were indeed very few people around the teaching building.This middle school is located in the suburbs, and it is a private middle school. Half of the students live on campus, and the remaining half of the students are basically children of villagers living nearby.After self-study at 9 o'clock every night, the students will return to their dormitories or go home.
According to preliminary investigations, the little girl's home is relatively close to the school and does not live in the school.Her mother worked in a factory 20 kilometers away and lived in the factory; her father made a living by fishing and selling fish in the small fish pond beside his village, and was drinking heavily.The parents cared very little about the little girl, and never went to school to pick up the little girl for self-study.After investigation, on the night of the incident, the little girl's father, Li Bin, slept at home all night because of alcoholism at a party with villagers. He didn't run to the scene in a daze until the village officials informed him of his daughter's death.
Through on-site investigation, only the little girl's fingerprints were found on the iron gate on the roof of the teaching building, which confirmed that the little girl walked up to the roof by herself.The little girl's neat footprints were found on the edge of the roof, confirming that the little girl had indeed stood on the edge of the roof for a period of time.
The little girl was wearing a neat school uniform with a note in the school uniform pocket.A few words were neatly written on the note: "It's better to die than to live in pain. Mom, I'm leaving first. Take care."
This is a suicide note.After comparative analysis by document inspection technicians, it was confirmed that it was written by the little girl herself.
With the above conclusions, combined with the preliminary autopsy, this incident was determined to be a suicide incident, and the conclusion is unquestionable.
When we finished the on-site inspection, a van drove up quickly beside the scene, and when the door opened, a woman in her 30s rushed out.She rushed to the side of the little girl's body, stared at the little girl's pale face, her eyes were full of love, but she didn't show any excess.Afterwards, she turned her head and glanced at the child's father Li Bin, who was standing on the sidelines, before returning to the van.
After questioning Li Bin, I found out that the woman just now was the little girl's mother.Although the expressions of grief of losing a loved one are different, I was a little surprised by the calmness of this woman. She completely expressed what she thought in her heart with two eyes?Especially the look at her husband, I can't tell whether it is blame or resentment, in short, it is an indescribable look.
At 9 o'clock in the morning, the autopsy room of the Forensic Medicine Center.
Today seems like it should be an easy day, with only one post-mortem examination of an event of a definite nature.The little girl was still wearing her neat school uniform, lying quietly on the dissecting table.The weather was getting hot, and the administrator of the mortuary bank carried the little girl's body into the dissection room for thawing at 6 o'clock in the morning to ensure the smooth progress of the autopsy.
The little girl is actually very cute, with thick eyebrows, big eyes, and a straight nose. At the age of 13, she is more mature than children of the same age.This is a beautiful age that should be naive and ignorant, but the little girl wrote such a desperate sentence, and then easily ended her life.
The characteristics of a high fall injury are light on the outside and heavy on the inside. The whole body injury should be formed at one time, with internal organs ruptured and less bleeding.No open injuries were found on the girl's whole body, only a small amount of dark red blood flowed from the nasal cavity and external auditory canal, and the accompanying bruising marks around the eyes were all manifestations of a skull base fracture.There was no open injury, which meant there wasn't much external bleeding, and the scene wasn't bloody.The little girl just lay there cleanly, quietly, as if she was asleep.
I reached out to explore the back of the little girl's occiput, and found a huge hematoma, so I tapped the little girl's forehead lightly with the hemostat, making a "bang bang bang" sound.It is certain that the little girl died of a skull base fracture and head injury caused by a high fall.
"Are children nowadays really under so much pressure to study? Don't they commit suicide at every turn?" I said with emotion.
"I heard that her family seldom cares about her. The inability to feel the warmth of the family is probably an important reason." Brother Biao analyzed and took off the little girl's school uniform with me.
It happened by accident.Faint scars were actually found on the little girl's body.
"It seems that we have to re-analyze the motive of the little girl's suicide." Brother Biao frowned.
"The scar is round in shape, without adhesion to the subcutaneous tissue, the surface is wrinkled, and the shape of multiple scars is consistent." I described the shape while checking.
"This...was from a cigarette burn!" Brother Biao sighed, "Although she is not, and the scars are not obvious, but with so many scars with similar shapes, it should be considered a cigarette burn."
"She is only in the second year of junior high school, and she has never heard of any bad records. She is an honest child." I said.
"It seems that through this autopsy, we have discovered a new crime." Brother Biao shook his head regretfully, "abuse."
The appearance of the little girl's father quickly appeared in my mind: "You mean, her father did it? There is no basis."
"According to the feedback from the survey, the little girl does homework and housework other than going to school, and has no other activities. Who has the opportunity to bully the little girl like this without being discovered by her family and reporting the crime? Besides, you carefully Think about the little girl’s suicide note, she was saying goodbye to her mother, and did not mention her father.” Brother Biao analyzed, “This is a very abnormal phenomenon. The little girl’s mother has been working outside for many years, and she has always been She was taken care of by her father, but she didn't mention her father before committing suicide, why is that?"
I nodded in agreement.
In less than a minute, Brother Biao changed his judgment again.
"This may not be just a case of abuse." Brother Biao said after examining the perineum of the deceased, "It's rape."
my country's criminal law stipulates that anyone who has sex with a woman under the age of 14 is considered rape.
"There are many old ruptures in the hymen. And the little girl was only thirteen and a half years old when she died." Brother Biao added.
"This, couldn't it be her father did it too?" I suddenly felt nauseous, and the disgusting plot emerged in my mind.
"According to the above analysis, if it's not him, who else could it be?" Brother Biao clamped the gauze with the hemostat, and extracted the vaginal swab of the deceased, "No matter what, get the DNA results quickly and then talk about other things. In addition, you have to Find the case handling unit and quickly control her father."
After notifying the case handling unit, we sent the test materials to the DNA laboratory.
Four hours later, news came from the DNA laboratory: human sperm spots were detected in the vaginal swab of the deceased, but after comparison with the deceased's DNA, it was confirmed that the owner of the sperm spots was not related to the little girl.
"Let me tell you, such a disgusting plot can only be made into a TV series, how could it happen in reality?" After denying that it was an incest incident, I felt relieved.
"The DNA results only confirm that her father did not do it, but it is not sure that Li Bin did it, right?" Brother Biao said.
"You mean that Li Bin may not be her biological father, so Li Bin is still the most suspected criminal, right?" I quickly understood what Brother Biao meant and asked.
"Yes, if this child is not Li Bin's biological daughter, then the suspicion of Li Bin committing the crime will be even greater." Brother Biao said, "Call and ask, why hasn't the case agency reported the arrest after so long?"
As soon as I picked up the phone, I found the investigator Xiao Zhang running in with his trouser legs rolled up and sweating profusely: "How's the result here?"
"There are biological test materials, but I'm not sure if Li Bin did it. Has anyone caught it?" Brother Biao looked at Xiao Zhang nervously.
"He...may have absconded in fear of crime."
It turned out that when the investigators arrived at Li Bin's house, they found that Chen Yuping, the little girl's mother, was alone in the house.According to Chen Yuping's statement, after she knew her daughter committed suicide, she went to the factory to pay her wages and quit her job. But when she returned home in the evening, she found that her husband Li Bin was not at home, and his usual fishing tools and overalls were also missing. They disappeared. At that time, she thought that Li Bin had gone fishing, but after waiting all night, when the police came to the house to find someone, Li Bin still did not come back.Several policemen searched possible hiding places near his home, but found nothing.
"I rushed back first, and they went to find it near the pond where Li Bin often fished." Xiao Zhang said after drinking a glass of water in one breath.Seeing Brother Biao's helplessness, Xiao Zhang smiled mysteriously: "Brother Biao, what do you think I brought back? How about it, do you have a sense of evidence?"
We looked up and saw that Xiao Zhang was holding an old toothbrush in his hand.At that time in Nanjiang City, the grassroots police had a certain understanding of extracting DNA evidence. When Xiao Zhang searched Li Bin's residence this time, he extracted Li Bin's toothbrush by the way. Li Bin's DNA was likely to be extracted from this toothbrush.
Brother Biao was very happy, sent the toothbrush to the DNA laboratory, and said to the comrades in the DNA laboratory: "It seems that you are going to work hard again."
As soon as the voice fell, Brother Biao's mobile phone rang suddenly. Brother Biao saw that it was a call from the frontline investigators, and quickly connected the phone: "How is it? What's the situation?"
"We found some of Li Bin's fishing tools, his rubber shoes, and the wooden basin he used to row as a boat by a pond. We suspect that he may have fallen into the water while fishing and is now being salvaged."
"Falling into the water?" This result was beyond our expectations, Brother Biao said, "Let's go, let's go to the scene and take a look."
We drove for more than three hours on bumpy dirt roads before arriving at the remote site.When they arrived at the scene, Li Bin's body had been salvaged, and it was placed on the bank wetly, with water still dripping from his hair. Under the setting sun, he looked eerie.
There were a few policemen standing around the corpse, and they were also wet. It seemed that a lot of effort was spent trying to salvage the corpse.Chen Yuping had also arrived at the scene, and was sitting blankly aside. The village chief was talking to her, but she sat there motionless as if she didn't hear her, staring blankly at the front, without pain or despair, No sadness, just sit peacefully like that.
The deceased was neatly dressed, his fingernails were bruised, and foam was still adhering to the nose and mouth. The signs of suffocation were obvious. His lips and neck were not damaged, and his chest and abdomen were inflated.I used a hemostat to expand the nasal cavity of the deceased, and found a lot of sand inside, and then opened the closed one, and found that there was also a lot of sand in the mouth. These are typical signs of drowning.The so-called drowning means entering the water before death and drowning to death, rather than throwing the body into the water after death. This is very clear.
"The signs of drowning are obvious." I said to Brother Biao while checking, "He didn't commit suicide out of fear of crime, did he?"
"No, if he commits suicide, there's no need to bring so many tools and wooden basins." Brother Biao pointed to some fishing tools and wooden basins beside him.
"Yes, it makes sense. But he is very good at water, how could he accidentally drown?" I wondered.
"It's entirely possible. The bottom of the water is full of aquatic plants!" said the policeman who was in charge of salvaging the corpse just now, while stirring the water surface with a long bamboo pole, "See? Fortunately, we salvaged the body with a long bamboo pole on the shore. If we go into the water, it is estimated that all of our names will be black-framed tomorrow."
"He was good at water, and others would not use such a stupid way of killing him by pushing him into the water, so it is only possible that he accidentally fell into the water and was entangled in aquatic plants, and then drowned." I am very satisfied with my analysis, and feel that there is no leakage.
Brother Biao was noncommittal, but silently used a long bamboo pole to test the depth of the water and the height of the aquatic plants.
Suddenly, Brother Biao's phone rang. It was a call from the DNA laboratory. As expected by Brother Biao, a small amount of sperm spots in the little girl's body was identified as the same as the DNA on Li Bin's toothbrush.
Although we still used the puncture method to take the blood from Li Bin's heart and conducted a DNA test again just in case, but we know that if there is no accident, this rape case should be done by Li Bin.Now that Li Bin has also drowned, according to the law, the case should be dismissed.
Even so, my mood is still very low, it is true that evil comes with evil.It's a pity that the little girl suffered so much trauma to her young heart and so many injuries to her body, so that the flower of her life withered at such a young and beautiful age, it was really pitiful.
Brother Biao at the side suddenly thought of something, walked up to Chen Yuping, squatted down and lit a cigarette, and asked in a low voice, "Aren't you the child's biological parents?"
When Chen Yuping heard this, he jumped up suddenly as if he had been stabbed by a needle, his eyes were full of panic: "Who said that? You are talking nonsense!"
Brother Biao was still squatting there, staring into Chen Yuping's eyes.The two fought with their eyes like this for two minutes, and finally Chen Yuping was defeated.
"My daughter is my own, but not Li Bin's. When Li Bin and I got married, I was already pregnant." Chen Yuping leaned on the haystack like a deflated ball, tears streaming down slowly.In fact, in this era, paternity testing is no longer a rare thing, and most ordinary people know that the public security organs have mastered the technical methods of paternity testing, so it is useless to argue about this kind of thing.
"How is Li Bin treating your daughter?" Brother Biao stared at Chen Yuping with extremely sharp eyes.
"Okay... no, no, no, I don't know. I have been working outside for a long time, so I don't know anything." Chen Yuping looked terrified and spoke incoherently.
Brother Biao didn't ask any more questions, bent down, and cleaned and packed the equipment together with me. After packing, he turned his head and glanced at Chen Yuping. Chen Yuping was looking towards us. When her eyes met, she immediately avoided it.
"Let's go, the body is pulled back to the center."
Brother Biao didn't speak a word along the way, just looked out of the window silently, letting us in the car and the corpse in the rear compartment shake back and forth on the bumpy mountain road.
I had a lot of dreams that night. I dreamed that the little girl was crying, and that Li Bin turned into a ghost and rushed towards us. The dreams were so vivid and suffocating that I couldn't even hear the alarm clock in the morning.
In the morning, Brother Biao knocked on the door of my dormitory: "Wash up and get up, and do an autopsy immediately."
"Anatomy?" I tried my best to think back to the scene that happened yesterday. There was no murder case, and there was no case that needed an autopsy?
But obedience to orders still comes first. I finished washing as quickly as possible, and trotted all the way to the dissection room.
Lying on the dissection table was Li Bin.
"Li Bin? He was obviously drowned, so do we have to do an autopsy?" I wondered.
Brother Biao smiled: "I also know that he died by drowning, but I always have doubts in my heart, so I asked the leader for instructions last night. In order to prevent accidents, I decided to conduct an autopsy."
"What doubts?"
"The little girl died, and judging from the semen spots in her body, she had sex with Li Bin the night before. Li Bin knew that we were going to examine the little girl's body, so he should be afraid of his criminal behavior." We found out that he can still go fishing so leisurely? Then his mental quality is too good, isn’t he too heartless?” Brother Biao said confidently, “Also, take a closer look at his hands. clean."
"Hands? Clean? Doesn't that explain anything?" I asked.
"I don't dare to say what this means, but I know that if he fell into the water in a place full of aquatic plants and was entangled by aquatic plants and drowned, according to the theory of corpse convulsions, there should be aquatic plants in his hands if there is no sediment. ,Right?"
I know that for drowned corpses, due to the desire to survive and the convulsions caused by drowning and suffocation, mud, sand and water plants are usually found between the fingers.
And Li Bin's hands are loose and clean.
We conducted a systematic autopsy on Li Bin's body in silence.In addition to the signs of drowning found in the autopsy, Li Bin's visceral blood stasis, the blood color in the left and right hearts were inconsistent, pulmonary edema was present, sediment and aquatic plants were found in the trachea, a large amount of drowning in the stomach, and the diatoms in the corpse were closely related to the scene. The diatoms in the water samples were identified as the same, and these signs all confirmed that Li Bin drowned in that small pond.
After two hours of autopsy, apart from confirming that Li Bin was drowned, there was no other discovery, which made me and Brother Biao extremely depressed.
We supported the dissecting table with our hands, and just stared at the corpse stupidly from left to right. Suddenly, Brother Biao's eyes lit up again.
I followed Brother Biao's eyes, and the underarms of the deceased Li Bin seemed to be a little abnormal in color, but I couldn't confirm it.
"It looks like bleeding here!" Brother Biao said, "Cut it open and have a look."
Subcutaneous hemorrhage, plaque, and abnormal skin color caused by corruption are usually based on experience and can be identified with the naked eye, but sometimes it is difficult to distinguish. At this time, the skin needs to be cut to observe the state of the cut surface. Identify color abnormalities whether they are lesions, plaques, or decay.
Using a scalpel, I carefully incised along the center of the inconsistent area, and unexpectedly found flakes of subcutaneous hemorrhage in both armpits of the deceased!
"Subcutaneous hemorrhage here is rare. I guess it's from playing with the parallel bars if there is any damage." I joked.
"It's very simple. The injury here may be caused by someone else's hands exerting force on the armpits of the deceased and dragging him." When Brother Biao said it, I suddenly understood.
"Besides, since it is bleeding, it means that there was, and it was formed during his lifetime." The conclusion was already churning in my mind, "However, how can you confirm that there is a direct causal relationship between these two bleedings and Li Bin's death?"
"Subcutaneous hemorrhage has a fixed transition process." Brother Biao pushed his glasses up with his elbow, "In the initial stage of subcutaneous hemorrhage, it may not appear on the surface of the skin, but it will gradually appear on the skin. It is purple, and then the bleeding is gradually absorbed, hemosiderin is formed, and the color of subcutaneous bleeding will change to purple, blue, yellow-green, and even yellowish brown."
"You mean to say that Li Bin died shortly after the hemorrhage under both armpits, so it didn't show up on the skin surface. In this case, the formation of these two hemorrhages, the time before Li Bin's death is very short, so it should be compared with Li Bin's death is related." I drew inferences.
"As I said just now, the damage here should be caused by exerting force on Li Bin's armpit and dragging Li Bin, and Li Bin is not dead at this time." Brother Biao said thoughtfully, "Then..."
"Li Bin was in a coma at that time!" I rushed to say.
"What should we do now?" Brother Biao asked me with a smile.
Without saying a word, I extracted the deceased's blood, stomach tissue and part of the liver, and sent them to the toxicology department for testing.
"When we opened Li Bin's stomach, it was full and there was no smell of alcohol." I said, "This shows that Li Bin died shortly after eating, and he didn't drink alcohol, so the only possibility is that the drugs made him unconscious."
I thought for a while, and then said: "Because he was thrown into the water in a state of deep coma, so although he has obvious signs of drowning, there are no traces of grasping the mud, sand and water plants with his hands."
Brother Biao nodded approvingly: "The analysis is excellent, and it will be analyzed in conjunction with the previous autopsy. As you said, the suspect in this case is very likely to take advantage of the fact that the deceased was a fisherman before his death, deliberately The dead are stunned with drugs and thrown into the water, pretending to be accidental drowning."
"If this is the case, Chen Yuping is the most suspected one." Brother Biao looked at the ceiling, "Her daughter committed suicide because she was killed by a beast like Li Bin, and Chen Yuping's motive for the murder already exists. And, I don't know if you noticed, When Chen Yuping arrived at the scene of her daughter's suicide and death, and when I asked her questions, her eyes were abnormal."
I thought about it.That's right, when he saw his daughter's dead body, he was not sad but angry, and his overreaction to the question of whether it was his own, all revealed Chen Yuping's abnormality in his heart.
The autopsy was over, and Brother Biao and I returned to the office.We didn't speak, and we all fell into deep thought: If it is confirmed that Li Bin was killed by others, how can we find evidence to point to the criminals?
The toxicology test results came out, and sleeping pill ingredients were detected in Li Bin's blood, stomach and liver.
Brother Biao's deduction was confirmed.In other words, we successfully discovered the existence of a murder case from several subtle anomalies.
Sitting in our office, the investigators listened to our inferences as if they were listening to the Arabian Nights, and then asked: "Then how do we solve this case? Do you have any good suggestions?"
I was instantly stopped.Yes, in such a case, if no other relevant biological evidence was detected, how should we solve it?You can't convict Chen Yuping on the basis that she has a criminal motive, can you?
"There is a way to try." Brother Biao said, "On the day the little girl committed suicide, we all saw Chen Yuping arrive at the scene in a car, and then leave in a car. From this moment on, you investigate her trajectory, pay attention to Call the surveillance video near the hospital or pharmacy."
The results of the survey will be available soon.According to Chen Yuping, after she left the scene of the little girl's suicide, she took a car back to the factory where she worked, quit her job, and then took a bus or motorcycle back home.But she concealed an important problem: she got off the bus halfway, went in and out of the pharmacy near the bus station, and took the next bus to leave.This important evidence was recorded by a surveillance video next to the pharmacy.
"Okay, on the one hand, I will interrogate Chen Yuping, and on the other hand, I will ask the doctor in the pharmacy to ask and identify him." Brother Biao, like me, was not happy at all even though he knew that the case had been solved in this way.We know that the origin of this homicide was a mother's anger.
Chen Yuping, who was taken to the criminal police team, already knew that the incident had been revealed. She did not make any resistance, and directly explained the whole story: "I was pregnant when Li Bin and I got married, and he knew it was not his daughter when the child was born. At that time He said he forgave me, and I believed it, but what I didn't expect was that he hid it so deeply and took revenge on me more than ten years later. He beat my daughter and me. I was beaten all over, In a fit of anger, I left home to work. Not long ago, I knew that he had raped my daughter many times while I was away from home to work. From then on, I had the idea of killing him. The death of my daughter strengthened me I must kill this beast." At this time, Chen Yuping was in tears, but what the tears couldn't conceal was the murderous look on her expression, "I bought sleeping pills, and when I got home, this beast had already taken it by itself. After dinner, I put sleeping pills into the soup he stewed. He fell asleep like a dead pig soon after drinking the soup. I packed his clothes, took his usual fishing items, and dragged him to the The tricycle at the door transported him to the pond and threw him into that pond.”
The captain of the criminal police introduced the situation Chen Yuping explained to us with a livid face.I know we are all the same, sorry for this tragedy.
"Who made the first mistake?" I looked blankly at the blue sky above the Forensic Medicine Center, "Why don't we solve the problem through legal means?"
"It doesn't matter who is at fault. It's a pity that an innocent young life has just become a victim of this evil fate." Brother Biao also felt emotional.
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