Chapter 8 The sixth case half palm blood print

"Ding Ling Ding Ling..." A burst of urgent phone ringing ruthlessly dragged me out of my dream, who was doing my duty in the duty room.I rubbed my sleepy eyes, and watched Brother Biao who was on duty next to me jump up and rush to the side of the phone. I know that Brother Biao's quick response is not driven by excitement, but a conditioned reflex.After so many years, I really felt the anxiety of hearing the phone ring in the middle of the night.I think that all the detectives are probably like me, very allergic to the ringtone of the phone, and the allergic reaction is very serious.What's even more frustrating is that our phones must be on standby 24 hours a day.

"Forensic Center." "I am the 110 Command Center. A murder case occurred in Fenghua New Village. The police in the area have already started to protect the scene. Please arrive at the crime scene within 20 minutes." With no time to wash up, Brother Biao and I took the forensic investigation box, boarded the investigation vehicle, and rushed to Fenghua New Village on the outskirts of Nanjiang City like lightning.I raised my wrist and looked at my watch, it was 5:30 in the morning. We arrived at the scene just after dawn.Because it was early in the morning, there were not many onlookers at the scene, and the police in the jurisdiction pulled the cordon to the door of the unit.The scene of the center is in a house on the 4th floor of Building 23 in Fenghua New Village. At the door of the house on site, two well-dressed policemen are guarding the scene.

The person who reported the case was an old cadre who lived upstairs at the scene. When he went out for morning exercises at 5 o'clock, he found that the door downstairs was ajar. When he opened the door, a strong smell of blood came to his face.Because it was still dark and the lights were not turned on at the scene, he took a flashlight with him and took a photo inside.He saw a dark figure lying on the floor of the living room, but there was no response after calling out a few times, and a large amount of blood could be vaguely seen in the living room, so he hurried home and called 110.

The owner of the resident is Liu Gang, a fitness instructor at a nearby fitness center. Liu Gang's wife works in Qiling City, 200 kilometers away, and comes back every weekend in the middle of each month. They have been married for more than three years and still have no children.The young couple's relationship between husband and wife is average. After all, they are separated in two places, and they haven't gone through in-depth investigation, and there are no valuable clues to provide. The site is a two-bedroom apartment, the main entrance is a hallway, a set of shoe cabinets is on the west side of the hallway, and the bathroom is on the east side.After the porch is the living room of the house, which is the central scene.There are two doors on the east side of the living room, leading to two rooms respectively, and one door on the west side, leading to the kitchen.The windows are all intact and closed, that is to say, no one else can get in through the windows, and there is no abnormality in the lock of the door.

The area of ​​the living room was only seven or eight square meters. The floor had been completely soaked in blood, and there was nowhere to go. There were blood splatters, splatters, and rubbings on the walls and on the doors on the east and west sides. The deceased was Liu Gang. He was lying upright on the wall on the west side of the living room, with his eyes wide open and his mouth open, looking at us who were about to enter the scene with a look of despair.We irradiated the corpse with a search lamp, and found that the head of the corpse seemed to be deformed, and the entire neck was bloody and bloody, which could not be seen clearly.The deceased was neatly dressed, and it could be seen that the fitness trainer was very strong.

"Killing such a strong man, it seems that the murderer is even more extraordinary!" I exclaimed. Trace inspection technicians conducted a careful survey of the scene, and found no valuable trace evidence, only half of the bloody palm print on the wall of the entrance porch, after comparison, it was still the deceased's own. Because the blood at the scene soaked the floor of the entire living room, we could only lay down the exploration pedal and approach the corpse step by step. I put on gloves and performed a simple autopsy. Liu Gang's skull had obvious bone friction sounds, which should be a comminuted skull fracture; there was a huge incision in the neck, bilateral carotid arteries and jugular veins, trachea, The esophagus was completely severed, exposing the white cervical spine. There was a large pool of blood around the neck, and a small part had already started to coagulate.

Because of the huge amount of bleeding, the plaques are very light and difficult to find.Rigidity has not yet formed in the large joints, and the cornea is still transparent.I thought that the deceased should have died not long ago, so I took out the thermometer from the investigation box, measured the rectal temperature of the deceased, and calculated the death time of the deceased based on the temperature of the corpse.Brother Biao was checking the dead man's hands. I was busy for a while, counting the time, Brother Biao looked back at me, smiled and said, "He died around 11:30 last night, right?"

I was very surprised: "You...how do you know? This...you can see it by hand?" Because the result I just calculated is 11:30. Brother Biao chuckled: "It's pretty fast, but the observation ability needs to be strengthened." After speaking, he pointed to the watch on the dead man's wrist. I looked up at the dead man's wrist, and the surface of the watch was completely broken. After careful observation, I found that the hands of the watch no longer moved, and it should have been damaged by the blow during the fight between the dead man and the murderer. The time on the watch is exactly 11:27.

In the whole scene, only the traces of the struggle in the living room were very obvious. The rest of the space, including the entrance hall, had no traces. Except for half a bloody palm print on the wall, there was no blood on the ground.Moreover, no traces and physical evidence that could prove the crime and criminals were found at the entire scene, which made all the criminal technicians participating in the scene investigation very frustrated. "Pull the corpse back to the center for further autopsy." Brother Biao said helplessly, wiping the sweat from his forehead. When we left the scene, the parents and wife of the deceased had already rushed back to Nanjiang and went downstairs. The three of them were hugging each other and crying at the door of the unit, crying out Liu Gang's name.

Although we had some ideas of analysis and deduction in our minds, our understanding of the whole case and the general direction of the case detection were still unclear, so on the way back, we all silently bowed our heads and thought about our own problems, without saying a word all the way. Back at the Forensic Medicine Center, Brother Biao and I skipped lunch and immediately started autopsy work. The cause of death was quickly identified. Liu Gang died of brain injury combined with massive hemorrhage. The conclusion of the cause of death issued by the forensic doctor includes the direct cause of death, the main cause of death and the auxiliary cause of death, the inducement and the combined cause of death.The so-called combined cause of death refers to two or more causes that can lead to the death of the body, but the primary and secondary relationship cannot be judged, so the analysis of the two causes of death is the combined cause of death.

In this case, Liu Gang suffered multiple blows to the head with blunt hammers, causing extensive subcutaneous hemorrhage and nine scalp contusions scattered on the head, multiple comminuted skull fractures, and intracranial hemorrhage. , brain contusion, head injury severe enough to cause Liu Gang's death.However, the wound on Gang Liu’s neck was bleeding obviously, which was a response to life, indicating that this huge wound was formed before Gang Liu’s death, and such a large amount of bleeding could also lead to Gang Liu’s death, so we believe that Gang Liu’s death was a combined cause of death. Brother Biao carefully looked at the huge wound on Gang Liu's neck.If the cervical spine was not still connected, this huge wound could even lead to the decapitation of the deceased. Brother Biao pointed to both ends of the wound and said, "Look here." I looked carefully at the corners of the wound, and found that both corners of the wound had obvious tails, like crow's feet at the corners of the eyes. I counted them carefully, and there were seven or eight tails, which were very shallow and only scratched the epidermis. "What does this mean?" Brother Biao asked. I know that this is called trial and wound, and it is often seen in suicides, but this case is obviously not a suicide. I didn't think about it for a while, so I shook my head. Brother Biao said: "This seems to be a trailing mark of a trial cut, but it is actually formed by multiple cuts at the same position. The force on the side will be significantly reduced, and the neck will be cut multiple times, resulting in a huge wound, and multiple skin flaps will be formed at both ends of the wound." I scratched my head, I know this, but I still don't understand what Brother Biao means. Brother Biao went on to say: "Compared to head injuries, neck injuries have a characteristic, that is, they are concentrated. Head injuries are very scattered, which is in line with the formation of fighting, and neck injuries are concentrated, and the direction of blood flow is from front and back, indicating that the injury to the neck was formed when the deceased was already down and unable to resist." I scratched my head again, thinking I know this too. Suddenly, I understood what Brother Biao meant by asking this question: "Understood, Brother Biao. You mean, the deceased had lost his resistance and the damage was enough to cause his death, but why did the murderer cut the defenseless body?" The dead man's neck, right? I think it's out of the murderer's fear of not dying. So I think it's an acquaintance case." Brother Biao nodded approvingly: "That's right. That's what I mean. The acquaintance can be determined to commit the crime, so let's see when and how this acquaintance should have entered the scene?" On the way back to the forensic center, I had already sorted out my thoughts. Facing Brother Biao’s question, I knew everything: “The deceased was well dressed, and next to the body was the toiletries he brought when he went to work in the fitness center. Turn on the light in any room. Combined with Liu Gang’s off-duty time, I think this acquaintance should not have knocked on the door at night, but should have returned to Liu Gang’s house with Liu Gang, and attacked him as soon as he entered the door. Therefore, it is important to check and reconcile The people Gang Liu communicated with in the fitness center, or the people he met when he got off work." "What basis do you have to say that Liu Gang was attacked as soon as he entered the door?" Brother Biao continued to ask. "There is evidence. There is a bloody handprint of Liu Gang himself on the wall at the entrance, but there are no traces of fighting or blood at the entrance. Why do you fight or get injured in the living room, and leave bloody handprints on the entrance? Combining Liu Gang Wearing out clothes but wearing slippers, I think the bloody handprints at the entrance should be that when Liu Gang was changing his shoes at the door, he was hit from behind by others, which caused his scalp to rupture. He subconsciously covered his head with his hands and stained his hands Because the head injury would cause a sense of fainting, he would subconsciously go to support the wall, so he left this half blood palm print. Then Liu Gang was pushed into the living room by the murderer and had a fight with the murderer, because he was injured at the beginning, even though He was physically strong, and he was no match for the murderer with the weapon, so there was the tragedy that followed." "It's well-founded!" Brother Biao gave me a thumbs up, "I agree with your reasoning. But why didn't the murderer do it outside the community where no one is around, instead of doing it after entering the door?" I finally got stuck: "Do you want to go into Liu Gang's house to find something?" "Since he is an acquaintance and knows Liu Gang's house, why didn't he kill someone, get the key, and go find it by himself?" "Perhaps the murderer didn't know Gang Liu's family, or he didn't know Gang Liu's acquaintance who usually lived alone, so he went to confirm where Gang Liu's home was or to confirm that there was no one at home to do it?" Hearing what I said, Brother Biao nodded, "The two possibilities you mentioned are not ruled out." By the time the autopsy was over, it was already four o'clock in the afternoon, and Brother Biao and I ran to the cafeteria to find something to eat hungry.During the meal, Brother Biao asked me: "Tell me, could it be that someone hid in the house in advance?" "Impossible. According to the information provided by the investigation department, Liu Gang is usually very cautious. Only he and his wife have the keys to the house, not even his parents. Isn't his wife working out of town? She had just been notified when we went to the scene , She arrived only after we finished investigating the scene. The investigation department said that they called the boss of her company and said that she has been working normally for the past two days." I said confidently. "Oh." Brother Biao started to gobble it up again. We ate our food in silence, and chatted about the case unconsciously. "What do you think about the number of criminals?" Brother Biao asked. "Although there are two kinds of wounding tools on site, one is a blunt weapon like a hammer, and the other is a sharp weapon like a kitchen knife, but there is a chronological order of use. Therefore, I think one person can complete it." "But if a person kills a person, would he carry two tools?" Brother Biao asked. "This... this... is possible. Maybe he has already figured out the steps to kill people." I thought for a while and said, "But is there any problem with the lighting? If it is one person, there is no other person lighting the situation." It is impossible to hit the head with such precision and cut the neck so densely." "The deceased had already changed into his slippers, which means he turned on the light after he entered the door. The murderer turned off the light when he left." Brother Biao said. "But no fingerprints of anyone other than the deceased were found on the light switch," I asked. "Did you wear gloves?" Brother Biao fell into deep thought. "A sudden attack on the dead after putting on the gloves? How can the dead not notice it? Or in this cold day, wearing gloves all the way home with the dead? And the blood stains on the gloves will also stay on the switch." Doubts arise. "Could it be that after killing someone, wearing gloves...turning things?" "But there is no flipping at the scene." The emergence of this problem makes our entire inference contradictory. After dinner, we went to the Municipal Bureau to participate in the analysis report meeting of the task force.At the meeting, we didn't put forward too many views, after all, our thinking has not been sorted out.We propose that this case was committed by acquaintances, and investigations into the relationship between Liu Gang's hatred and debts should start with the people Liu Gang met in the fitness center on the day of the incident and the people he met after leaving the fitness center.There is no evidence to support whether one person committed the crime or two committed the crime. Biao Ge and I left the conference room dejectedly and returned to the forensic center. I tossed and turned in the dormitory at night and couldn't sleep.Liu Gang was attacked just after changing his slippers at the door, and then fought in the living room. There was no problem in this process.If the scene itself did not turn on the light, but another accomplice was in charge of lighting, Liu Gang had no reason to change shoes without turning on the light; if Liu Gang turned on the light and the murderer turned off the light when he left, there was no reason not to leave the switch on Fingerprints and bloodstains.Could it be that they turned on the light to fight first, and then accidentally touched the switch to turn off the light during the fight?It is also impossible, because there are no traces of fighting or blood at the entrance where the switch is located.It is also impossible that the murderer used other parts of the body to turn off the lights, because the murderer cut the main artery of the deceased, and there should be a lot of blood on the body. After checking the bathroom and kitchen, there is no sign of cleaning. It cannot be such a coincidence. Turning off the lights The part just didn't get blood on it, right? The phone rang suddenly at this time, which really startled me. It was Brother Biao who called: "I guess you're still awake. You're thinking about the light just like me, right?" "yes." "I was thinking, if the murderer put on gloves in order to find the things carried by the deceased after the murder, it might not be possible?" "In that case, the gloves will get blood stains, and turning off the lights will also leave blood stains on the switches." "If he was just looking for things with gloves on, at most there would be blood on the palm side of the glove, but not on the back side. This clean glove covered the blood on his hands instead, and turned off the light with the back side of the glove." I hummed and thought it made sense. Brother Biao said: "Go to the morgue and check to see if there is any blood on the inside of the pocket of the corpse, or if it has been turned over. This will also help us analyze the murderer's motive." According to Brother Biao's instructions, I came to the guard room of the corpse vault alone in the middle of the night when the moon was dark and the wind was high.The guard room is 20 meters away from the corpse vault, and the console inside can manipulate the gate and lighting of the corpse vault. I greeted the doorman, only to hear the roll-up door of the mortuary vault open rumblingly, and then the fluorescent lamps inside were also turned on, making the entire mortuary vault brightly lit. I walked into the morgue alone, found the freezer where Gang Liu's body was stored, pulled out the mortuary bed containing Gang Liu's body, fumbled on Gang Liu's clothes, and checked his pockets one by one. At this moment, the light suddenly went out, and it was pitch black in front of my eyes. What was even more frightening was that my hand was holding Liu Gang's cold and stiff hand. I knew that the doorman might not be able to hear me when I called the doorman, so I fumbled to put the body back into the freezer. At this moment, the door of the corpse vault suddenly closed with a bang.I was locked in a dark corpse vault. My brain is blank, is there really a ghost in the world?Otherwise, why would you close the door and turn off the lights so weirdly?Thinking of this, I felt the hairs all over my body stand on end, and the roar of the freezer seemed to turn into a strange sound of howling ghosts and wolves. I felt that the nerves were stretched to the limit and were about to break. The corpse was next to me. I couldn't see it, but I could smell the smell of frozen blood.I stood there like this for five minutes. Suddenly, the fluorescent lights came on again one by one, and the door opened again with a bang. The doorman showed a grinning face at the door: "How about it, Qin Daoer, are you afraid?" I immediately realized that when I was handling the case before, I told the guard that I was not afraid of anything, and laughed at his timidity when he first started working.He has always held grudges, no, here comes my revenge. My face was pale, and my voice trembled: "So it was you playing a prank! What's there to be afraid of? I thought the switch system was broken. Switch? Yes, switch!" It seems that when people are in extreme fear, adrenaline is secreted in large quantities, which can make the brain very clear and inspire inspiration.At this time, I seemed to have discovered the relationship between the switch and the light in this case.What would happen if the scene happened to trip that day?I didn't have time to think about it, so I ran to the duty room and reported this idea to Brother Biao. "I happened to think of this question too, why don't we call the trace inspectors and go to the scene to have a look?" Brother Biao was very excited. When Brother Biao, trace inspector Xiaofang and I rushed to the scene, we found that there was actually a policeman on duty outside the gate of the scene, which shows that the bureau still attaches great importance to this murder case. The police in the jurisdiction opened the door to the scene for us. We laid out the scouting pedals, entered the scene and began to look for the switch, but found nothing. "This house is not old, isn't the switch at home?" My voice just finished.Brother Biao shouted: "I found it!" Following Brother Biao's gaze, we found that above a small cabinet in the living room, there was a piece of wallpaper that was not as flat as other places. Brother Biao stood on the low cabinet wearing shoe covers, and knocked on the distinctive piece of wallpaper, making a hollow sound. Sure enough, the back of this piece of wallpaper was empty.I carefully took a photo with a bright flashlight, and there were indeed cracks around the wall paper. When I lifted it lightly, the power box inside was exposed. What excites us more is not the power box, but the blood on the cover of the power box.The blood could only splash on the wallpaper, but it was impossible to splash on the power box inside the wallpaper. The murderer must have lifted the wallpaper and moved the power box inside after killing someone. Xiao Fang also stood on the low cabinet, looked at it carefully, and said, "It's all blood stains, no identification value." While carefully opening the power box, Brother Biao said, "It doesn't matter if you can't prove it, but it explains a lot of things." As soon as the words were finished, Brother Biao and Xiao Fang, who were standing on the low cabinet, fell silent. They found a clear and fresh blood fingerprint on the main switch switch. The key evidence was extracted, and the direction of the investigation was clarified. These unexpected gains made us embrace each other happily. "Don't rush to be happy," said Brother Biao, "just think about it." I rushed to say: "The blood fingerprints are fresh, it can be determined that they were left by the criminals, and they are the key evidence. I won't talk about this. Let me explain why the criminals activate the electric switch after killing people. The normal state of the electric switch is open. When we arrived at the scene, the switch was turned on, and the fuse inside was also normal. This kind of old-fashioned switch cannot automatically trip, so the only possibility for the criminal to activate the switch after the murder is that he turned off the switch before killing. Made us suspicious, so after the kill it was restored to its original state." "It makes sense, let's continue." With Brother Biao’s approval, I became more confident. I cleared my throat and said, “Since it is conditional to turn off the switch before the murder, there are only two possibilities. One possibility is that the switch was broken and the worker who repaired it Went into the scene with Gang Liu, and later killed Gang Liu for some reason while repairing the switch. But judging by the state of the switch, the fuse was covered in dust and wasn't new, and the switch showed no other signs of burnt out. Plus At 11:30 in the evening, where can I find an electrician? It can be seen that the second possibility is the truth." Brother Biao couldn't help laughing when he saw that I was imitating his tone. I walked to the entrance, pointed to the bathroom on one side, and said, "The second possibility is that the murderer entered the scene in advance, turned off the main switch, and lurked here. After Liu Gang returned home, he turned on the light and found that it was not on. The fuse burned, so he turned off the light switch, and then changed his shoes. At this time, the murderer came out of the bathroom and attacked Liu Gang. Liu Gang covered the wound, and because of fainting, he leaned on the wall with his hands, leaving bloody palm prints. The murderer took the opportunity Pushing Liu Gang into the living room, he did not expect Liu Gang to be physically strong. Although he was injured on the head, he still fought with the murderer. But in the end, because he was unarmed, he was hit on the head by his opponent many times and fell to the ground. The murderer feared that he would not die. Neck. In the end, the murderer was afraid that we would know that he had entered the scene ahead of time, and turned on the main switch. But at this time, his hands were covered with blood, and he inevitably left blood fingerprints on the main switch. All the contradictions are solved." "Very good. But why did the murderer turn off the switch in advance?" "Because he knew that his physical fitness was not as good as Liu Gang, so he had to attack in the dark." "Then why did the murderer cut the neck so densely without a light? Can he find the position of the electric switch accurately?" "First, it should be someone who is familiar with the home, and second, there should be a second person in charge of the lighting." "But, as you said, there are only two keys to this house, and his wife is indeed not here. So how did the murderer enter the scene in advance?" Brother Biao continued to ask. "Could it be that his wife gave the key to someone else? Or is it the technology to open the lock?" "No, the trace inspection has already ruled out the possibility of lockpicking and technology unlocking." Brother Biao said, "No matter what, he must first control his wife." Came to the meeting room of the task force again, where several investigators slept here after work, leaning against chairs and tables in disorder and snoring.Hearing a few of us enter the door, several investigators woke up and asked, "Aren't you sleeping so late?" "There is a new situation. Liu Gang's wife, Cui Yuhong, may be suspected. I'm afraid we have to control it." Brother Biao said. "I'm going to tell you tomorrow. We found out that Cui Yuhong was having an affair with her boss, and we have sent people to monitor Cui Yuhong." An investigator said. Brother Biao and I looked at each other and smiled, knowing our minds. Brother Biao said: "Since there is an adulterous affair, then the evidence that the boss made about Cui Yuhong's absence is likely to be problematic! Let's arrest him, we have evidence to compare." This night, Brother Biao and I had a good night's sleep, and it was already 9 o'clock the next morning when we woke up.When we arrived at the bureau, we found that everyone was already clapping hands to celebrate. That's how the case was really broken. Cui Yuhong, who is in her 20s, and her boss, Chen Fang, who is in her 40s, both have families, but they have maintained an adulterous relationship for a long time.Once Liu Gang accidentally discovered that Cui Yuhong had a bed photo of her and Chen Fang in her mobile phone. Liu Gang did not act impulsively. He copied the photo and used it as a threat to blackmail Chen Fang for 500,000 yuan.Chen Fang mistakenly believed that he had fallen into Cui Yuhong's trap, so he became furious at Cui Yuhong.Cui Yuhong felt extremely wronged, and was extremely angry and sad that Liu Gang used her as a bargaining chip.In order to prove that she only has Chen Fang in her heart, Cui Yuhong promised that if Chen Fang wanted to kill Liu Gang, she would definitely support her.Just like that, the two hit it off and drove back to Nanjiang City on this moonless night. Because of Liu Gang's excellent physical fitness, Chen Fang was worried that the two of them would not be able to match Liu Gang together, so he turned off the electric switch at the scene and attacked Liu Gang from behind in the dark. He hit Gang Liu on the head many times, and finally killed Gang Liu.In the end, Chen Fang calmly restored the switch, and drove away from Nanjiang overnight. After comparison, the blood fingerprints on the switch were left by Chen Fang, and the blood of the deceased Liu Gang was also found in Chen Fang's car. Because of the adultery that shouldn't have happened, or because of 500,000 yuan, two supposedly happy families were abruptly ruined.