Chapter 3 Case 2 Midnight Gunshots
Although Master hung up the phone, I didn't feel at all that what I said was nonsense.The human body is weird in its own right.Sometimes, what looks like a minor injury can kill you; what looks like a serious injury can survive.
Even if Lin Tao doesn't talk about girlfriends, I always think he is a person who loves the new and dislikes the old. The day before yesterday, he was looking at Su Mei's photos, and today he took the initiative to peel oranges for Chen Shiyu.Of course, he did the same with cases. When he encountered a new case, he forgot the old case.Although we quickly cracked this case that killed many people, the "strange case" with no clues still hangs in my heart, which arouses a sense of ominous premonition in my heart.
"Damn it, I forgot about it." After Lin Tao finished speaking, he smiled embarrassedly.Then he took out his phone and dialed a number.
"Wait, wait." I stopped Lin Tao, "You don't even look at what time it is, who are you calling?"
"Bet on breakfast, Boss Wu has already woken up." Lin Tao didn't stop his movements, "Believe it or not? Believe it or not?"
The call was connected quickly, and Lin Tao talked for a long time on the phone with "hmmm" before hanging up.
"Let's go, let's go to the living room." Lin Tao narrowed his eyes and said, "You treat me on the way."
"It's not even seven o'clock, and Boss Wu is in the office?" I was surprised.In my impression, the document inspection department of our provincial department should be a relatively leisurely unit. I didn't expect that people would go to work so early in the morning. It was really unexpected.
Wu Kang, forty-five years old this year, is the section chief of the Document Inspection Section of the Provincial Department.Although his official rank is not high, he enjoys a high reputation in the country.He said that he was only suitable for business, not for being an official, so he hid in the laboratory every day and fiddled with the pile of documents and materials.His research results in the field of document inspection are even more than those of the professors in the document inspection department of the Criminal Police Academy.
There are also two types of academic research. People who engage in theoretical academic research often give people a stereotyped feeling, but those who engage in practical academic research are usually very simple.Wu Kang is such an "old urchin".
Although forty-five years old is not considered old, but as a middle-aged man, he would call us to play World of Warcraft or League of Legends online whenever he was free. This kind of behavior can only be described as "childlike innocence". .
Because he often plays with us boys in their twenties and early thirties, everyone respectfully calls him "Boss Wu".No matter in terms of academics or character, he is our boss.
"You don't understand this." Han Liang squinted his eyes and drove the car, and said, "There is a saying on Weibo: When you wake up naturally in the morning, it means that you are born in your 100s. For example, if But if you let me sleep, I will wake up naturally after eight o'clock, which means that I am born in the 1980s; old people like Wu Boss get up after six o'clock."
"Nonsense! Boss Wu is still very young, and his appearance and heart are similar to ours." Knowing that Han Liang has a lot of jokes, I interrupted him and said, "This breakfast is yours, otherwise I will go to Boss Wu to sue." You are dark. Also, I think if I touch the pillow now, I can sleep until the afternoon, how old do you think I am?"
"This law does not apply to night owls." Han Liang said.
"I'm forced to become a night owl, okay?" I yawned, "Who doesn't want to go home on time and sleep with his wife?"
I emphasized the word "wife" as if showing off, which aroused Lin Tao's contempt for a while, and then he squinted at Chen Shiyu who was in a daze in the back row.
In the laboratory, there are several text detectors for different purposes: high-resolution scanners, writing time analyzers, seal detectors... Of course, the most eye-catching one is the 45 inch high-definition LCD display.We used to connect our PS2 to this super-large monitor to play live soccer during our lunch break. Later, because we were caught by Master, we didn't dare to "use public equipment for private use" again.
At this time, what was shown on the monitor was the picture that had been lingering in my heart.
"Scavenger" written in blood.
"Come here?" Boss Wu raised his legs and pointed to the monitor, "This photo is not good, it's a little fake."
I glanced at Lin Tao contemptuously.
Chen Shiyu interjected, "I also have photos here." After speaking, she connected her camera to Boss Wu's computer.
Boss Wu's eyes lit up, and he said, "Well, professional level! This is clear."
"Then do you see any clues?" I asked eagerly.
Boss Wu picked up the soy milk on the table, took a sip, and said slowly: "These three characters are written in a rough manner. But judging from the handwriting, they are very elegant. This can suggest that the writer should have a good quality. cultural level."
"Wait, what do you mean by the word 'juanxiu'?" I widened my eyes, "Can you tell the gender of the person who wrote it?"
Boss Wu shook his head: "I've never been very optimistic about judging gender through words. Although there are also topics in this area, the research is all on words written on paper, because the strength of the pen is also a proof. Written on the wall Most of the words written on it are inaccurate when used to judge gender. This case can only show that the murderer has a certain level of education. I also want to remind you that, judging from the writing posture, this person wrote these three When writing, he is very calm."
"Calm?" I frowned, "Does it mean that the murderer has a good mentality? Doesn't he panic when he kills someone?"
"Well, that's one aspect." Boss Wu said, "There's another aspect. The murderer didn't bend over to write, nor did he write while squatting on the ground, nor did he write while tiptoeing."
"Huh?" My eyes lit up, "That's a good inference, you can roughly judge the murderer's height."
I took out my mobile phone and looked through the reprinted autopsy transcripts and on-site investigation transcripts after the autopsy.
"A normal person writes with a standing posture and looks at the head. The height of the center of the font is about between the nose and the lips." Boss Wu added, "How high are these three characters from the ground?"
"One meter five."
"Then add about 20 centimeters, which is the murderer's approximate height." Boss Wu said.
Dabao stroked the mustache on his chin and said, "One meter seven, she must be a tall woman."
"Woman?" I turned to look at Dabao, "How do you know it's a woman?"
Dabao shook his head and said nothing.
Lin Tao said: "This kind of height, if it is a man, it is a bit shorter, and if it is a woman, it is a bit taller. Therefore, this inference seems to be of little use to us who have not found any possible suspects so far. "
"What else?" I asked, "Any other inferences?"
Boss Wu said: "Because it was written on the wall with bloodstains, the bloodstains at the intersections of the strokes are printed and stained with each other, unlike writing on paper with sunken paper, so it is impossible to judge the writing habits from the order of strokes. But for the writing of strokes Habits, there are still some rules to follow."
"What do you mean?" I was surprised.
Boss Wu laughed and patted me on the shoulder, saying, "It's not interesting. I think if you can get the suspect's written materials, it might be of comparative value."
This news, if it is in the late stage of the investigation, will be very good news, because the document inspection and appraisal can provide the court with direct evidence.But in the early stage of the investigation, there were not many surprises.We are like blind cats wandering the streets now, how lucky it is to encounter a dead mouse.The current investigation has no direction, let alone any suspects.Moreover, from Boss Wu's tone, it can be heard that even if there is the suspect's handwriting, it may not necessarily be possible to compare and identify the same.
"I'm less concerned with the evidence now," I said. "It would be nice if it could give the investigation a little direction."
Boss Wu shook his head and said: "This person's handwriting is quite sloppy, and I haven't found any very distinctive features that can be directly used for troubleshooting. Of course, everyone has their own distinctive features when writing, but the information we have now Too few, just three words. Three words! Do you think I am a god?"
"A person at the level of a god should do some things at the level of a god." Lin Tao said.
Boss Wu said: "If there is another serial case, using these three words again, maybe I will find something."
"Please! Please!" I almost knelt down to Boss Wu, "I beg you to seal your golden mouth, Amitabha!"
"How can it be so evil?!" Boss Wu looked disdainful, "If I can get a murder case with just a few words, then I am really a god-level figure."
"Hey, don't talk about it, boss." Lin Tao said seriously, "This matter is so evil. For example, our chief of the Qin University, every time he talks about being idle, relaxed, and boring, there must be a murder. This It's called the crow's mouth."
"Oh?" Boss Wu laughed so hard, "Then I want to see if I'm a crow's mouth: there's a murder case! There's a murder case!"
"I won't play with you anymore, you are playing with fire." I glared at the two of them and said, "The five of us didn't sleep last night and solved a case. Now sleepy bugs are coming to trouble us, we want Go back to bed."
"Hahahaha. If I'm a crow's mouth too, wouldn't you be able to sleep again?" Boss Wu was still entertaining himself.
"Ding Ling Ding Ling..."
As my cell phone rang, everyone put away their smiles.
"Isn't it?!" Boss Wu's eyes widened.
"Is it okay?" Master always spoke so concisely.But when I heard these three words, I knew I had been tricked by the crow's mouth again.
"Uh... okay." I hesitated and said.
Even if the police force is seriously insufficient, the Forensic Medicine Department and the Trace Inspection Department of the Provincial Department will barely make up two teams to prevent them from being overwhelmed when crimes occur at the same time.If I go home and sleep, another team of Xiao forensics and forensics can also rush to the scene immediately.But in the short three seconds after receiving the call, a fierce ideological battle unfolded in my mind.In the end, the temptation to solve the case still overwhelmed the temptation to sleep, so I agreed.
Master said, "There was a gun case in Chengcheng City. You start now and arrive at the scene within two hours."
"Shooting?" I said, "Is anyone dead?"
"Nonsense." Master hung up the phone.
Although Master hung up the phone, I didn't feel at all that what I said was nonsense.The human body is weird in its own right.Sometimes, what looks like a minor injury can kill you; what looks like a serious injury can survive.When I was an intern in my hometown, I encountered such a case.
I was on duty at the forensic clinic that day. At that time, my father was the deputy director in charge of criminal investigation. He called me and said that the procuratorate was handling a case of gunshot wounds. He had already contacted me and asked me to follow and study.
After I answered the phone, I jumped up to Lao Gao. Gunshot wounds are really rare, even the forensic teachers in our university rarely see them.Of course, this is due to our country's strong control over guns.Without even thinking about it, I took a taxi and rushed to the Municipal People's Hospital.At that time, the starting price of a taxi was three yuan, and the distance between the forensic clinic and the hospital was within the starting price.When I got out of the car, I took out a five-yuan note to the driver, and said, "Here, don't need to look for it. You're welcome."
I originally thought that the forensic comrades of the procuratorate would take me directly to the morgue, but unexpectedly they took me into the ward.
In the corridor of the ward, there was a man with a bandage on his head, and he said to the doctor, "I tell you, I was shot. If you don't help me take the bullet out of my brain, I am in a hurry with you!"
This sentence sounded like a tongue twister at first glance, but when I thought about it carefully, I felt very complicated.If I use the current language to describe my mood at that time, it would be "my friends and I were stunned"!shocked!
After seeing the X-rays, I realized that this person was injured by a ricochet.Because the bullet hits the stone, it loses its rotational force, so it loses the "rear cavity effect", and the lethality of such bullets has been reduced hundreds of times.After the ricochet bounced off the rock, it hit the man right in the head.Although the bullet broke through his scalp and skull and entered the cranial cavity, the bullet at this time was like the end of a crossbow, and it had no lethality at all.After the exhausted bullet penetrated into his head, it stopped in the brain parenchyma, without hurting the central nervous system or breaking the large blood vessels.Therefore, the person who was shot did not suffer from cerebral hemorrhage, nor did he show any neurological symptoms and signs, so he can still bluff here.
As a forensic doctor, there is nothing to test for such a gunshot wound. According to the injury identification standards at that time, he was given a serious injury based on the fact that he had an open craniocerebral injury.Later, I also followed his treatment. The doctor easily removed the bullet from the hole in his skull without sawing through the skull.
Because I have had such an experience, I will ask the sentence just now.
Although Dabao and Lin Tao were not very clear about the meaning of my words, the time limit set by Master was very tight. We didn't even have time to criticize Boss Wu, so we rushed downstairs to the motorcade.
Han Liang has not arrived yet, we are waiting anxiously.Lin Tao tidied his hair leisurely and asked Chen Shiyu, "Are you sleepy?"
Chen Shiyu actually ignored him.This surprised me very much. Is the girl in front of me really a woman?There are women who ignore Lin Tao!
We waited anxiously for 20 minutes before we saw an Audi TT driving into the convoy at lightning speed, and Han Liang arrived.
"Is there any mistake? Don't you know you have to be on call?" I was a little angry.
Han Liang said with an aggrieved face: "When you went upstairs, you told me to go back to rest, okay? Who knows that there is another case, should you go to the temple to worship? During these 24 hours, only There were three cases."
"It was so early in the morning, you didn't go to pick up girls, did you?" Dabao asked with a mysterious expression, "You changed your girlfriend again?"
Han Liang shrugged his shoulders: "I just sent a girl I just met to work. Anyway, your autopsy last night, I slept quite comfortably."
"At a time like this, women are more tempting than sleeping?" Even though I know the countless love stories of Han Liang, a rich second generation, I still can't understand what he is doing.
The turbulence of the vehicle quickly drove us to sleep, and I seemed to dream that the person who had been shot was jumping around and accusing us loudly of being slow in calling the police.
As the car passed the speed bump of the expressway, we woke up one by one and saw the two big characters "Chengcheng" on the top of the toll booth.
Here we are.
After sleeping for two hours, we became much more awake. We didn't care about the aches and pains all over our body. We rushed to the scene and started our journey to solve new cases.
Under the guidance of the local police car, our police car drove towards the western suburbs of Chengcheng City.After a while, we arrived at a village.This is a fairly large village, and it looks like it has a thriving population.
The scene was located next to a main road in the center of the village, and a large number of onlookers had already stood outside the cordon.
I rubbed my sleepy eyes, stretched myself, and got out of the car with the investigation box.
As the main road in the village, the concrete road at the site looks very spacious.Because the scene was outside, in order to protect the surrounding traces and evidence, the police who arrived earlier had set up roadblocks and warning belts on both sides of the central scene, 100 meters away.The three of us put on our survey certificates, crossed the security belt, and walked towards the center site.
The gunshot wound this time killed a man.
A man in his thirties and forties was lying under a tree by the side of the road, with a lot of blood around him.Ten meters to the north from the central site, you can see the blood footprints in rows, and the walking direction is towards the central site.
As a trace inspection technician, Lin Tao likes to hear and see footprints.We are still observing the environment around the scene, Lin Tao has already run to the footprints and bent down to check.After observing for a while, he walked to the corpse again, looked at the soles of the corpse's shoes, and said, "Oh, this blood trail belongs to the deceased himself."
"Anyone else's?" I asked.
Lin Tao shook his head and said, "No, judging from the characteristics of the blood footprints, there is only one pair of shoes, which are the ones worn by the deceased."
"Then can't find other people's footprints around here?" Chen Shiyu asked.
"It doesn't make sense, don't forget, this is a big road! There are many footprints, all kinds, but can you tell which one is left by the murderer?" Lin Tao was very disappointed.
I followed the blood trail to the beginning of the trail and looked at the ground.There was a small patch of freshly rubbed dirt on the ground, and there was a large pool of blood next to it.The source of the blood trail is here.I pointed to the pool of blood and said, "The deceased should have been injured here, then walked to the central scene and fell to the ground to die."
"Being shot, can you still go this far?" Chen Shiyu asked.
Dabao rushed to say: "Chen Yu, you don't understand this. First of all, we don't know where the fatal injury is, and whether the fatal injury is serious or not. Secondly, in terms of the behavioral ability after the fatal injury, Individual differences are also very large. Generally, people who are pierced by a knife in the heart will cause cardiac arrest and die quickly, but there are also cases where the heart was pierced and they ran for 100 meters before falling to the ground and dying. Just from the traces, It is normal for the deceased to be injured here and fall to the ground ten meters away to die."
Chen Shiyu nodded, then frowned and said, "Please, my name is Chen Shiyu, okay? What a nice name, to be called like that by you!"
There was a gun next to the body, and there was not much blood on the gun.This is a homemade shotgun, single barrel.In order to ensure that the bullets do not change course when shooting at long distances, the barrel of the gun is made very long, a full 80 centimeters. With the gun body and butt, the total length of the whole gun is 1.2 meters.
The control of guns in my country is very strict. In addition to the control of standard guns, self-made guns are also confiscated immediately once they are found, and those who hide guns must be strictly dealt with or punished.But it may be a problem left over from history. Chengcheng still has a lot of homemade guns.Although the public security department of the Public Security Bureau often organizes large-scale confiscation of guns and large-scale processing of parties involved, the phenomenon of gun production and sales still exists.Especially the guns I made at home, usually hidden in my own home, there is no way to get rid of them.Even if someone reported it and the police searched, it would be difficult to find the place where the gun was hidden in the sparsely populated countryside.
Although it is not surprising to see guns in Chengcheng, the staff of the local police station are still very nervous. After all, it is the uncontrolled guns that hurt people, and the director of the police station is responsible.
"This location is not a good place to kill people." I straightened up and said, "The area around the scene is very open and there is no shelter. Although the nearest house is two hundred meters away, as long as someone stands at the door, you can see clearly. Everything that happened here. In my impression, people who use guns to kill people are usually planned. It is unreasonable to plan to kill people here."
When Dabao heard what I said, he straightened up and looked around.
"Our preliminary investigation is like this." Director Liu of the police station leaned over and said, "The deceased is Hu Qi, thirty-seven years old, and he is from this Hu family village. He is a farmer. He has bad conduct and has a history of petty theft. Moreover, the biggest problem with this person is his alcoholism. He beats his wife and mother when he drinks too much, touches little girls when he goes out, and quarrels with others. These situations have all happened. Anyway, the people in the village People are very tired of him, and they frown when they hear his name. This should be regarded as a bully, and the common people say that this kind of scum deserves more than death."
I knew what the director of the police station meant. He wanted to start with the bad deeds of the deceased to reduce his responsibility.But even if he had this idea, I believe he would not dare to fabricate the plot. The deceased should have had bad deeds during his lifetime.
"Also," the director of the police station added, "we have already seen and verified this gun. It is his own gun. A month ago, he did not know where he got the steel pipe, and he started shooting at himself. The guns at home were made about two weeks ago. Hu Qi’s wife Zhang Yue and his mother Zhao Xiulian can testify to this. We also found leftover materials for making guns in the cellar of their home. There are some homemade projectiles."
"Now the police station has preliminarily determined that Hu Qi, the deceased, went out with a gun in the middle of the night, accidentally fired the gun, injured himself, and died of excessive blood loss." Forensic doctor Yang of Chengcheng City said, "The body has not yet been examined, so we have not yet approved the death." their point of view."
His own gun wounded his own life, which was the best excuse for the director of the police station to reduce his responsibility.
"Did you move this gun?" Lin Tao asked anxiously when he heard that they had already identified the guns at the scene.
I have the same worry as Lin Tao, fearing that the director, who is eager to exempt himself from responsibility, will destroy the marks on the gun.
"No, no." The director said, "We brought witnesses to the scene for identification. There is still a sense of protection of physical evidence at the scene."
"Where are the remaining materials?" Lin Tao frowned, "I want to conduct an overall separation and comparison."
The overall separation and comparison technology is a trump card of the trace inspection profession.The specific method is: use a contrast microscope to detect and splice the broken ends of the two objects, and observe the tiny features of the splicing interface, so as to judge whether the two were once integrated and then artificially divided into two parts.
"I'll ask someone to pick it up." After the director finished speaking, he called the technician at the police station.
"Who reported the case?" I asked.
The director glanced at the crowd in the distance, pointed at a young man, and shouted: "Hu Limiao, come here, tell the leaders of the provincial department how you discovered and reported the case."
Hearing the word "provincial department", the crowd of onlookers suddenly exploded. Everyone suddenly talked a lot. They might think that the provincial public security department sent people down to investigate the case. Something doesn't match.
I scratched my head in embarrassment, glared at the director, and thought to myself, can your voice not be so loud?The onlookers must not know that the Forensic Medicine Department of our provincial department is actually a grassroots unit.Except for some simple and ordinary murder cases, as long as we have enough manpower and can run over, we have to go to the survey site to solve some problems for the grassroots, which can be regarded as helping the grassroots forensic doctors.
Hu Limiao followed a policeman into the cordon and walked towards us.He has wicked eyebrows and mouse eyes, looking around all the way.
"Tell me, what's going on?" I stood in front of Hu Limiao, covering his sight, preventing him from seeing the corpse, and took off the blood-stained gloves at the same time.
Hu Limiao shrank her head and said: "It's like this. I was playing mahjong at my brother's house last night. When I played mahjong around ten o'clock in the evening, I suddenly heard a sound of 'pong', as if someone was setting off a cannon. Oh No, it was louder than a cannon. The four of us ran outside the house to look, but we didn't see any fire or anything."
"Wait, where does your brother live?" I asked.
Hu Limiao and the director pointed to the east of the scene and said, "Three hundred meters to the east is my brother's house."
"Is it the side of the road?"
Hu Limiao nodded.
"Then what do you see?"
"There was a moon at that time, and we saw a figure walking west." Hu Limiao said, "Looking at the back, it seems to be him." After speaking, Hu Limiao pointed to Hu Qi's body on the ground.
I turned to look to the director of the police station for confirmation.
The director nodded and said: "We have made this confession, and several mahjong players have confirmed this fact."
"Are you sure there's only one figure?" I asked.
Hu Limiao nodded firmly.
"Based on this clue, we are basically sure that the deceased injured himself by a firearm," said the director.
I waved my hand: "Don't draw conclusions too early, where does Hu Qi's family live?"
The director of the police station pointed to the west, and said, "Go west for a hundred meters, pass the warning belt, turn left, turn right again, and you will be here."
I looked to the west along the director's finger, and I could only see the corner, and when I turned the corner, my sight was blocked by a public toilet.
"After you heard the gunshots, how long did you go out?" Chen Shiyu asked.She asked the question I wanted to ask.
Hu Limiao lowered his head and thought for a while, then said: "We are in the backyard, opened the door, walked through the yard, opened the door and came out. I guess it will only take twenty seconds."
I said "oh" and said, "Go on, you said you saw a figure just now."
"Ah, yes." Hu Limiao cleared his throat, "We saw Hu Qi staggering towards the west, that is, towards his house. Because Hu Qi likes to drink when he is half-baked, and he likes to hang out when he drinks too much, so We didn't care, we all turned around and went back to continue playing mahjong. This rubbing lasted until dawn, and I won more than 3,000, hehe."
After he finished speaking, he felt uncomfortable, and secretly glanced at the director, seeing that the director did not pursue their intention of gambling, and then said: "Early in the morning, I walked west from my brother's house and followed this road to the end. This is my home. I didn’t expect to see him lying on the ground with a big pool of blood when I got here, which scared me to death.”
The director gave Hu Limiao a wink, and Hu Limiao immediately said: "But this kind of scum, it's best to die."
I shook my hand in disgust and said, "People are dead, so don't be so vicious. Even if he is morally corrupt, he still has the right to live."
"Then is there anything else to ask?" Hu Limiao asked.
"Your brother's house is only 300 meters away from the scene. In the middle of the night, in the dead of night, you didn't hear any sounds of shouting, fighting, fighting, or calling for help? After all, he didn't die on the spot, but died after walking more than ten steps." Dabao asked.
This question is indeed important.
Hu Limiao shook his head and said, "Definitely not, definitely not."
"His own gun went off, and he drank too much, so he may not be able to bark." The director explained.
I heard that what the director said made sense, so I didn't say much, and put on my gloves again to conduct a preliminary inspection of the surface of the corpse.
The deceased was wearing a long-sleeved T-shirt and a pair of slacks. The right leg of the slacks was almost completely stained with blood, but the top was not stained with blood.Dabao reached out to touch the pants of the deceased, but I stopped him: "Don't move, look, there is a muzzle mark on the pants."
Muzzle marks are characteristic of contact fire.Contact shooting is a representation of the distance between the muzzle and the target.
Friends who are interested in military equipment know that there are two main types of guns: rifled guns and smoothbore guns.
Rifled guns refer to the spiral rifling in the barrel, so that when the bullet is fired, it will rotate, thereby enhancing the projectile distance, accuracy and lethality of the bullet.If such a gun is shot by contact, it will leave muzzle marks on the skin; if it is shot at a distance of less than one meter (close range shooting), due to the high-speed rotation of the bullet into the skin, it will leave contusion wheels, wiping wheels on the skin , smoke halos and powder particle burns; if fired at a distance greater than one meter (long-range shooting), it leaves bullet holes in the skin with abrasion rings and dirt rings, smoke halos and powder particle burns are not visible .
However, rifled guns have higher manufacturing process requirements, so among the types of folk self-made guns, smoothbore guns are still the mainstream.Shotguns are also called shotguns. The guns use bullets of a certain caliber. The bullets are filled with gunpowder and projectiles. After the trigger is triggered, the projectiles are launched in a conical shape.Therefore, judging the shooting distance of a smoothbore gun mainly depends on the area where the bullets are distributed on the body surface.If it is just a large injection port, it means that the distance is relatively close; if it is a small hole-shaped injection port, it means that the distance is far away.Shotguns have limited range and are usually more lethal when fired at close range.Of course, like rifled guns, contact firing with smoothbore guns will leave muzzle marks on the skin.
"What's so weird about the muzzle marks? Lin Tao came to take a picture." Dabao gave me a blank look, "The most common shootings are misfires or suicides, which confirms the director's words."
Lin Tao was at the side of the scene holding the materials extracted by the police from the deceased's home, and compared them with the guns extracted from the scene that had been protected with plastic film, and believed that they were the same material.In other words, the gun should have been made by the deceased himself.
Lin Tao came over and told us about his comparison results, but the results were inferred from tool materials.If you want to further confirm the overall separation, you need to test the relevant laboratory.
After taking the photo, Lin Tao observed the muzzle marks and the muzzle of the gun at the scene from the professional point of view of trace inspection for a while, smiled slightly, and said, "However, judging from the marks of the gun muzzle, the gun that caused the injury was the gun at the scene. .”
Indeed, this does not require a professional to judge.The muzzle of the gun was pressed into an oval shape because of its rough production, and the muzzle marks on the deceased's trousers also showed an oval shape, with the diameter exactly the same as the muzzle.
After seeing the muzzle marks, Dabao and I carefully took off the trousers of the corpse and put them in the evidence bag for preservation.As soon as the trousers were taken off, there was an oval, black hole above the deceased's knee.The area around the wound turned black, it was a gunpowder burn.When the corpse's position changed a little, blood flowed out from the black hole.
"Shot in the leg," I said.After speaking, he frowned and began to think.
"Hey, I know that there is a saying in your forensic sciences called the cavity effect of bullets." Chen Shiyu said, "But I didn't expect the cavity effect to be so powerful, it can kill people if they hit the leg."
Dabao ostentatiously asked: "Do you know what is the formation mechanism of the rear cavity effect? The rear cavity effect is caused by the rotation of the bullet, which can only be formed by a rifled gun. This self-made gun is a smoothbore gun. A smoothbore gun How to turn? How hollow?"
Dabao is right, the cavity effect after the bullet is the main mechanism of bullet injury, but this effect will only occur after the bullet is fired from the rifled gun, which is why the rifled gun is more lethal than the smoothbore gun.Using X-ray film high-speed photography technology, it can be observed that after the simulated body is hit by a warhead, a cavity after the bullet will be formed in the tissue where the bullet passes.This cavity appears quickly and disappears quickly. Therefore, when the bullet travels through the body, it will not only tear the soft tissue, but more importantly, it will release the rotational kinetic energy on the bullet to the surrounding tissue, making the soft tissue centered on the ballistic trajectory. Radial displacement around, thus forming a cavity several times larger than the volume of the warhead.Although the short-term duration of the transient cavity after the impact, it can cause the soft tissue around the wound to stretch out, tear and tear the blood vessels.Tissues often rupture due to displacement beyond the elastic limit, showing explosive changes, leaving serious and complex compound damage on the body.After repeated changes such as expansion, contraction, re-expansion, and re-contraction, the cavity gradually disappears, leaving a wound cavity with a much smaller volume than the cavity, which is the bullet wound path that our forensic doctors can finally discover.
The primary mechanism of damage to a smoothbore gun is bullet damage.If the bullet breaks a blood vessel, it will lead to death from blood loss; if the bullet breaks an organ, it will cause blood loss and death from organ failure.For the smoothbore gun of contact shooting, because the projectile is still in the dense stage, there is only one wound path formed, which is formed by the joint action of all projectiles.
"Let me tell you." Dabao said to Chen Shiyu, "Actually, this shot didn't do much damage. Seeing that the deceased's lower limbs were not deformed, we knew that his leg bones were not broken. The reason why so much blood flowed out was because There is a very important and very thick artery in the inner thigh of a person - the femoral artery. If the bullet hits the leg and interrupts the femoral artery, it will be terrible. Such a thick artery cannot self-coagulate. If it is not timely Press it down and let the blood flow like this, and shock symptoms will appear soon, causing coma, and if you don’t rescue it immediately, you will die. The deceased should have died like this.”
"Excessive alcohol dilates blood vessels, speeds up blood circulation, and speeds up the death of the deceased," Forensic Doctor Yang added.
While they were talking, I had already taken out a blunt probe from the exploration box.
The main function of the probe is to detect the length and direction of the wound.The deadly wound of the deceased was a wound. Obviously, this wound interrupted the femoral artery, but we don't know the direction of the wound, and we can only rely on this thin probe.
I carefully inserted one end of the probe into the wound, and then explored in all directions, and soon, I found the wound.The incision is from the wound on the knee upwards, and finally reaches the inner thigh about five centimeters below the perineum.I inserted the probe into the thigh of the deceased along the path of creation, leaving the probe handle outside, and called Chen Shiyu to come and take a picture.
In this way, the direction of Chuangdao's travel can be clearly seen from the photo.
"Do you see any problems?" I looked at Dabao and Lin Tao.
The two looked blank.
I said to the director of the police station: "Please contact the comrades in the funeral home and go to the autopsy room for autopsy."
If through investigation and autopsy, it can be determined that the death of the deceased was caused by a fire accident, it is an accident and an abnormal death event, and the autopsy must be approved by the family members.But if there is a possibility of homicide, the public security organs can force an autopsy.
"The family members do not agree to the autopsy." The director asked why.
"Issuing an autopsy notice and forcing an autopsy." I said, "Because this is a murder case."
“命案？”这出乎所长的意料，他的头发都要竖起来了。
我微微一笑，说：“你们看，创道是从下往上的。你们再看看这支枪，有一米二长。加之这是接触射击，现在我们来还原一下现场。”
说完，我拿过透明物证袋里的枪，把枪口顶在死者膝盖上方的创口处，说：“子弹往上，那么枪托就应该在膝盖下面。你说，这样怎么走火？”
如果是走火，这么长的枪，应该打中死者的腰部以上，或者弹道是往下的。如果是打中膝盖，而且创道往上，这样摆放枪支不合理，而且死者是够不着扳机的。即便是死者坐在地上，用枪顶住膝盖，扳机的位置也在他的脚尖以外，柔韧性再好，也够不到扳机。
“有道理！”在场几人异口同声地说。
“所以，只有可能是别人拿着枪，对着他的膝盖开了一枪。”我说，“现在我们需要对尸体进行解剖。”
程城市公安局法医学尸体解剖室里，陈诗羽仍然默默地站在一边。这是她在两天内看到的第三个现场、第七具尸体解剖，真可谓是填鸭式教育。她现在不仅完全适应了尸检工作，而且已经可以清楚地说出尸体的解剖位置，这让我们不禁感叹她适应能力、接受能力的强大。我也尽自己所能进行规范化操作，好让这个白纸一样的女大学生，对法医的工作有个规范性的认识。
我们对尸体进行了全面的尸表检验，死者除了左侧膝盖上的一处枪创以外，我们还在他的后枕部摸到了一块不小的血肿。血肿的表面还有一些浅淡的擦伤。头皮没有创口，只有血肿和擦伤，用法医的眼光看，这是一个具有一定平面、一定质量、表面粗糙的钝性物体形成的损伤。可能是摔跌倒在地面，也可能是工具形成的。
“你看，果真还有其他外伤吧。”我兴高采烈地说。
大宝拿出手术刀，准备剃除死者的头发。我说：“等等。”
我们把尸体翻了个身，暴露出枕部，然后细细地拨动死者的头发，很快，找到了几个黄色的小颗粒。
我用镊子把小颗粒钳出来放进物证袋，说：“致伤工具已经清楚了，是砖头。”
大宝赞许地点点头，说：“开颅看看，防止是他中枪后摔跌，跌倒在砖头上形成的损伤。”
摔跌导致的损伤，会在颅脑内形成对冲伤，而直接打击所致的损伤不会有对冲伤。
打开死者的颅骨，他的枕部果真有一小块脑挫伤，而对侧的额部则没有发现。
“没有对冲伤，可以肯定是有人用砖头袭击了他。这一处损伤有生活反应，说明他是在中枪前被打击的。”我说，“这么小的一块脑挫伤，不足以致死也不足以致晕，但是为我们提供了一个方向，寻找可能存在的物证的方向。”
开完颅，大宝和杨法医按常规对死者的尸体进行了全面、系统地解剖检验。大宝动刀的时候，可能是因为疲劳，一不小心用手术刀戳破了死者的胸腔。
“哎呀，小心点儿。”杨法医说，“尸检过程是要录像的，别给当事人家属看见了，非说这一处创口是凶手形成的就完蛋了。”
大宝用手抹了抹被他用手术刀刺出的小创口，说：“没事的，这创口这么小，这么薄，看不出来啦。而且没有生活反应，检验前我们也拍了尸体照片，不碍事，不碍事。”
我笑着说：“杨哥，你现在被信访案件闹得草木皆兵啦。法医在尸检过程中不慎对尸体造成损伤是常有的事情，不用大惊小怪的。”
杨法医尴尬地笑了笑，继续和大宝对尸体进行系统解剖。除了在打开死者胃部的时候，一股呛人的酒精味扑出来以外，并没有其他特殊的发现。
在他们进行解剖的时候，我拿起死者的双手，仔细观察了一下，没有说话。
检验完尸体后，我提出要去现场村落附近的小店吃牛肉面。除了这是我的嗜好以外，我还有别的意图。路过现场的时候，警戒带已经撤去，只留下路面上的片片血迹。我叫韩亮停了车，下车在现场周围转了一圈。不一会儿，我就用物证袋拎了一块砖头上了车。
“林涛，一会儿你去看看这块砖头。”我说，“这是凶器。”
大宝好奇地朝车窗外张望了一下，说：“你看这路边好多砖头，你怎么知道这是凶器？”
我哈哈一笑，说：“因为这块砖头上黏附着血迹、毛发。”
熬夜加之旅途的疲劳突然袭来，我们在吃完中午饭后，找了个宾馆美美地睡了一觉，等待着其他实验室的检查结果出炉。
下午四点，我们一起来到了专案组，汇报工作的同时，也听取其他刑事技术专业的检验结果。
“死者系被霰弹枪打中了大腿，导致股动脉破裂。因为没有得到及时救治，失血过多死亡。”我说，“除此之外，死者的枕部还有一处钝器伤，是凶手在开枪前被打击所致。这是一起命案。”
“有点儿奇怪。”侦查员说，“经过我们的调查，死者昨天晚上和几个狐朋狗友喝酒喝到九点多，有人骑摩托车带他到现场附近，他下了车。九点半左右，死者回到家里，问他老婆要钱，他老婆不给，他踹了他老婆几脚，然后硬抢了几百块钱离开家。过了大约二十分钟，死者重新回到家里，摇摇晃晃、骂骂咧咧的，从地窖里拿出枪就离开家了。然后十点钟就出事了。”
“嗯，是这样的，在他的裤子里发现了四百六十块钱。不过，他这不就是要去和人约架吗，怎么奇怪了？”大宝说，“肯定是他和谁吵架了，然后去打架，结果打不过人家，所以被人抢了枪，打死了呗。”
侦查员摇摇头，说：“这个人平时喝多了酒，就喜欢寻衅滋事，这是事实。但是每次都是带着棍子带着刀，吵着喊着要去打架，一旦真的和人家遇上了，又了。而且，附近有人打麻将，并没有听见吵架打架的声音啊。”
“你们说，会不会是这样，”我说，“死者喝多酒以后，想去和他们一起打麻将，所以去家里要钱。打麻将的时候，发生了纠纷，死者就回家里去取枪，在重新往打麻将的地方走的时候，遭到了袭击。因为是这几个打麻将的人干的，他们当然不会说听见什么声音了。”
专案组沉寂下来，都在思考这一可能性。
不一会儿，专案组组长拍了桌子，说：“这是最有可能的！你们去抓人吧！其他专业继续介绍情况。”
几名侦查员应声出门。
理化室的负责人清了清嗓子，说：“我来介绍一下理化检验的情况。死者的心血中，每100毫升血液的酒精浓度高达280毫克，达到80毫克就算醉酒了，他这个数值都接近致死量了。这说明死者是严重醉酒。在这个酒精浓度下，死者的自控能力和身体协调能力应该都非常差了。如果真的是打架，他没有多少反抗能力。”
“严重醉酒，也是加速他失血死亡的一个因素。”大宝补充道。
“另外，”理化室的负责人接着说，“从死者头发里提取的微量颗粒，和现场提取的砖头，认定同一。”
“可惜，”林涛一脸惋惜，“砖头上太粗糙了，只有指印痕，没有指纹，没有获取证据、线索的条件。”
“那枪支检验怎么样呢？”我问。
林涛说：“我进行了整体分离比对，死者家的残余材料和枪支认定整体，也就是说，这把枪确实就是他自己做的那把枪。另外，就是对枪支表面进行了检验，因为表面不光滑等原因，没有发现有比对鉴定价值的指纹。”
这着实是个不好的消息。既然是谋杀，射击的人很有可能在枪支上留下指纹，可惜，没有条件。我接着问：“那枪弹射击实验做了吗？”
这是涉枪案件中必须进行的实验，在实验室中进行。把枪放在枪托上，用线牵引扳机射击，射击固定目标。进行枪弹射击实验，可以了解枪支的性能，从而对枪支射击进行比对认定，是法庭判案的一个依据。
“枪里没子弹，我让派出所所长去家里搜了。”林涛说。
所长接过话茬儿：“死者家里人情绪很激动，开始很不配合，后来我做了很多工作，才对地窖进行了搜查，找到了几枚做好的弹药。喏，在这里。”
说完，他从警服口袋里摸出了几枚自制枪弹。
“那我现在就去做实验。”林涛说。
“明早再说吧。”我说，“一方面，看看今晚对那四个打麻将的人的审讯结果。另一方面，你赶紧先陪我去看看那块砖头。”
我们走出专案组会议室的时候，听见公安局大厅里一片嘈杂。仔细辨听，是有人在喊冤。可想而知，那四个打麻将的人被抓进来了。
我们径直走进刑警大队的小楼，走到物证室里。杨法医从物证存放柜里取出了那块被装在透明物证袋里的砖头。
砖头没有沾血的那一面和两个侧面都已经被熏黑了，这是林涛在检验指纹的时候熏现的。在这一片黑的砖头表面，隐约可以看出几个指印。
指印很小，虽然看不出指纹，但是可以看出指节的印痕。砖头的一侧有一个小小的痕迹，应该是拇指留下的，但是连半个指节都不足；另一侧有三个指印，应该是中指、环指和食指留下的，最多也只有半个指节。
“奇怪，这个问题你考虑了没有？”我转脸问林涛，“我们拿砖头，通常都会留下一个半到两个指节的印痕，但这个印痕不仅细小，而且少。用指尖拿着砖头多不方便？”
林涛皱眉不语。
我也皱眉不语。
想了一会儿，我说：“既然看不出什么指纹，我们就放弃吧。那几个打麻将的，赌资不少，可以治安处罚了。抓他们进来估计也是这个借口，等着审讯结果吧。我们，睡觉去。”
林涛说：“你回去睡吧，我去把枪弹实验做完再睡。”
"it is good."
回到宾馆，案件的一幕幕在眼前浮现，我的直觉告诉我，这个案件距离侦破已经不远了。而且，很显然，这样的案件都是因为仇恨或者激情，范围也不会太大。还是“清道夫”案件比较棘手，那会是什么人干的呢？杀那些无辜的人，还用了那么复杂的反侦查方式。既然用了复杂的反侦查方式，为什么又要在墙上写字，给我们留下线索呢？
连续几天的疲劳重重压来，我想着想着，很快就进入了梦乡。林涛什么时候回到宾馆，我全然不知。
第二天早晨八点，我准时醒了过来，拿起床头柜上的手机看了看时间。屏幕上显示的数字，让我突然想起韩亮说过的笑话。几零后的人，早晨就会在几点钟自然醒，看来一点儿没错，这个理论是经过实践验证的。
我推了推另一张床上的林涛，他睡眼惺忪地醒了过来。
“嗯……几点了，猪？”林涛说。
“你才是猪。”我注意到他对我称呼的改变。
“昨晚回来我想叫醒你来着，结果你连着打呼，都停不下来。不是猪，是什么？”林涛嬉笑着说。
“昨晚有什么发现没有？”
“没有什么。”林涛说，“就是普通的自制霰弹枪。”
他在我失望的表情中顿了顿，说：“不过他的技术不过关，枪没有做好。”
“什么意思？”我燃起了希望。
“这支枪的扳机盒和枪膛之间有缝隙。”林涛说，“击发后，有很多火药从扳机这里出来。我打完以后，看看枪托，都是火药残渣。”
“太好了！”我从床上跳了起来，“这还叫没发现？这是大发现！重大发现！”
林涛一脸茫然。
“我在检验尸体的时候，仔细看了看死者手上的皮肤，没有任何火药颗粒附着。”我说。
“唉，”林涛一阵失望，“咱们不早就判断出死者并非死于自己扣动扳机吗？”
“是啊。”我说，“但是凶手手上肯定会遗留火药颗粒啊！这是线索，也是证据啊！”
“这个问题我也想到了。”林涛说，“可是，毕竟是前天晚上的事情，即便凶手手上粘有火药颗粒，现在也被洗掉了吧？”
“这就不是你的专业了。哈哈。”我喜笑颜开，说，“枪支射击的时候，一般都会有火药冒出，黏附在射击者的手上。但是这在短枪案件中比较多见。在这么长的枪导致的伤亡案件中，火药很难黏附到射击者的手上，所以我让你进行枪弹实验。没想到枪支制作有漏洞，也可以冒出火药。”
“你没说到重点。”林涛关心的是火药颗粒能不能被洗掉。
我说：“火药之所以可以从枪口冒出，是因为击发后的爆炸所致，这时候的火药是灼热的。一旦黏附到手上，虽然这么点儿热量不足以引起人的痛觉，但是会在皮肤表面，尤其是在手掌的角质层留下一个很小的小坑。这个小坑就足以把火药给'藏'起来。洗手可以洗掉一些黏附的火药残渣，但是不可能把这些被藏起来的火药全部洗掉。我们只需要用放大镜观察，然后用黏附仪提取就可以了。既是线索，又是证据！”
“不重要吧，”林涛说，“说不定胡黎苗他们几个已经招了呢。”
“不，不会是他们干的。”我斩钉截铁地说。
来到专案组，看到侦查员们垂头丧气、一脸疲惫，我就知道我的猜测没错。
“虽然问出了点儿情况，但是没有多大的价值。”侦查员见我和大宝走进门，说。
"Oh? Tell me."
“胡黎苗几个人的口供开始都很一致，和报案的时候说的一样。”侦查员说，“但我们经过摸排，当天晚上全村打麻将的就他们家，胡奇回家拿钱又出门，肯定就是去他们家赌博。用这个撒手锏，我们进行了进一步审讯。审讯的结果是，几个人的供词一致：胡奇晚上九点多经过他们家门口，进门看到他们在打麻将，就离开了。过了二十多分钟，胡奇又回到他们家，要求胡黎苗把位置让给他打。几个人都知道胡奇是属于赢了就跑、输了赖账的人，所以都不愿意和他打。他拿出身上的几百块钱，说这次不赖账。他们还是不同意，胡奇就气鼓鼓地跑了。他们害怕胡奇的死和他们几个扯上关系，所以才约定了攻守同盟。”
"And then?" I asked.
“然后他们过了一会儿就听见枪响。”侦查员说，“出门后看见远处胡奇摇摇晃晃的，也没在意。几个人都是这样说的。”
“看来他们没说谎。”林涛从门外走了进来。之前我让他去审讯室看看几个人的手，有没有遗留火药痕迹。
“既然这样，我觉得我有一点儿思路了。”我揉了揉太阳穴，像一休一样，想让智慧赐予我力量。
“说说看吧。”一夜没睡的主办侦查员疲惫地说。
我说：“首先，我认为凶手是女人。”
“女人？”主办侦查员的嘴角露出一丝不信任的笑容，“这怎么能看得出来？”
“第一，从这块砖头看，”我一边打开幻灯机，一边说，“砖头的两侧都只有指尖的痕迹，没有指腹的痕迹。用指尖拿砖头太累人了，除非这个人手小，不得已而为之。”
我顿了顿，说：“标准尺寸的砖头，宽度是十二厘米。一般男人的手都是可以拿起来的，用指腹捏住砖头两侧。但是女人的手小，只能用指尖捏住。”
有人点头，有人存疑。
我接着说：“第二，用砖头打击头部，会造成比较严重的伤害，但是死者只有头皮和头皮下有个血肿，颅骨没有骨折，硬膜下没有出血，脑组织的挫伤也很轻微，这说明行凶者的力气很小。综合这两点，我认为凶手应该是个女人。”
“那什么女人会杀他？”主办侦查员接着问，“调查中没有发现他有什么不正当男女关系啊？”
我说：“这就是我要说的第二个问题。凶手应该和死者熟识，关系非常亲近。我们可以把现场重建一下：死者被人用砖头打中枕部，然后倒地，他拿着的枪也就掉落在一旁。凶手捡起枪，对着他的腿部打了一枪。”
“死者是处于躺着的体位被打的？”大宝插话道。
“当然，也可能是坐在地上。”我说，“弹道和腿骨几乎是平行的，方向从下往上。枪有那么长，除非死者的双下肢是平放的，不然不可能形成这样的创道。”
“有道理。”大宝像是在和我说相声，“没有不正当男女关系？关系亲近？”
我接着说：“既然在这个过程中，那几个已经被排除嫌疑的人说了没听见动静，说明死者并不惧怕凶手，他认为她不敢开枪，他不需要对她进行抵抗，他不需要叫喊呼救。中枪后，因为高度惊恐、大量失血以及酒精作用，他也没能发出叫喊声。”
我见大家都在奋笔疾书，记录我的分析，便喝了口茶，顿了顿，留出他们写字的时间，然后说：“第三个问题，我认为凶手的住址，应该是在现场往西一百米左拐弯的那个巷道。结合现场环境，如果凶手往东走，必然要经过胡黎苗的哥哥家，而且走到离现场三百米外，至少需要一分多钟。那么听见枪声后二十秒就出门的几个人，肯定可以看见。如果凶手往西跑，二十秒的时间，能跑一百多米，如果经过那个巷口继续往西，她同样会被东边数百米的几个人看到身影。所以，凶手应该在这二十秒的时间内，恰巧拐到巷道里。我看了现场，因为公共厕所的阻隔，几个打麻将的人看不见那里。”
“那个巷道里住了七八户人家呢。”侦查员说，“包括死者自己家。”
我笑了笑，说：“第四个问题，你们有没有想过，凶手为什么要打死者呢？我说的是打，不是杀。当时死者躺在地上，由于酒精作用，并没有多少反抗能力，如果凶手想杀人，随便打哪里都可以杀人。为什么她要选择最不可能死人的地方——腿部呢？当然，打断股动脉这个结果，是出乎凶手意料的。结合你们的调查，死者喝多酒之后，就会用脚踹他的老婆，还会满村到处跑，惹是生非。那么最恨他这条腿、最讨厌他满村跑的人，因为这事儿最没有面子的人，肯定是他老婆。”
“他遇害前，还踹了他老婆。”大宝继续补充。
“所以，这应该是一起激情伤害引发的死亡案件。”我说。
“有一定的道理。”主办侦查员说，“不过，我们没有证据，没法甄别他老婆张越是不是凶手，没法定案啊。”
“有办法。”我笑眯眯地从包里摸出一个放大镜。
这是个金属边、红色木柄、造工精细的放大镜，是我的一个叫作包包的好朋友送给我的生日礼物。看来这个时候它要派上用场了。
我说：“死者制作的这支枪有一个缺陷，就是扳机盒没密封，会有火药从扳机附近漏出来，黏附在扣动扳机的人的手上。这种黏附因为有烧灼作用参与，所以不易被洗掉。你们只需要用这个放大镜看看张越的手上有没有火药残渣，就可以了。”
“好。”这个意外的惊喜，让侦查员们信心倍增，拿了我的放大镜就走出了公安局。
可能是由于巨大的恐惧和内疚吧，当侦查人员再次走进张越家的时候，张越乖乖地伸出双手，戴上了手铐。甚至连我的放大镜都没有发挥作用，这起案件就破了。
在押解张越回公安局的路上，技术人员用黏附仪，获取了她手上残留的火药作为呈堂证供。这个风韵犹存的女人，走进审讯室后就哭着交代了她的全部罪行。
张越十八岁的时候，就嫁到了胡家村，成为胡奇的妻子。因为外表出众，胡奇曾经非常非常爱她。但结婚时间长了，胡奇的本质也就渐渐暴露出来了