Chapter 20 Case 18 Blade of Madness

"From the CT scan, the concussion injury is obvious. The skull fracture line is continuous and runs through the occipital. Such damage must be formed by contact with a blunt object with a certain contact area, and it should be decelerated." I said. , "Obviously, the wounded lied. His injury was not hit, but fell out." After finishing speaking, several forensic doctors around the conference table nodded in approval. "Since this is the case, it is not appropriate to refer to the identification standards for minor and serious injuries of the human body for injury identification." Chief Hu said.

In fact, this is not an autopsy, but an injury appraisal consultation. Injury identification is another important task of forensic medicine, and the difficulty of this task is no less than that of homicide detection.On the one hand, the identification of injuries involves the conflict of interests between the two parties involved in the dispute, so no matter what conclusion is drawn, one party will always be dissatisfied and think that it is unfair to itself, and then speculate that the forensic doctor is suspected of favoritism and fraud.On the other hand, because many injuries involve internal organs and bones, forensic doctors cannot get an intuitive understanding like examining a corpse, but must use medical knowledge and medical imaging data to diagnose the injury of a living body, and compare the injury identification standard. Identification.

The forensic medicine in the provincial capital is very strong, but it does not dare to neglect the identification of injuries. In order to ensure the scientific, objective and fair conclusion of the appraisal, the forensic department of the Provincial Public Security Bureau will take advantage of its geographical advantages and regularly invite the Provincial Public Security Department, The forensic doctors of the Municipal Procuratorate jointly conduct consultations on some difficult injury identifications, especially injuries that are close to the injury identification standard line. Through brainstorming, the transparency and fairness of the identification can be better reflected.At the same time, forensic doctors in various departments also use this type of consultation work to improve their professional quality and unify their understanding of injury identification standards.

During this period of time, the number of injury appraisals in the provincial capital has suddenly decreased, and the number of difficult cases has also greatly decreased, so this time there is only one case in the consultation work. The case is very simple, there is a dispute between two people, and there are no other witnesses.When the injured reported to the police, he claimed that the perpetrator hit the back of his head with a brick, while the perpetrator claimed that he slipped and fell on his back when the injured chased him and beat him.So the case-handling unit provided the medical records of the injured to the Municipal Public Security Bureau and asked the forensic doctor to solve the problem of the way of injury.Forensic doctors can tell who is the real "villain" in this case with a simple paper appraisal.It sounds amazing, but the shoulders of forensic doctors bear a heavy burden. "You can't let a bad person go, and you can't wrong a good person." This is Master's interpretation of the injury appraisal.

After the consultation, Chief Hu and I chatted in the office.Section Chief Hu was my intern teacher before work, and now his temples are also stained with hoarfrost after a few years. "There are so few cases recently, and I'm a little too busy to panic." Chief Hu said with a smile. "I looked through your registration form. In the past month, you have received 60 injury appraisals. Are you still panicking?" I said. "We accept more than 1,000 injury appraisals every year, and only received 60 this month. Do you think you have a lot of free time?" Chief Hu snapped his fingers, "However, there is a rule in our provincial capital. Once the injury There will be fewer identifications, and there will be difficult murders. But it seems to be calm recently."

It's not that I'm superstitious, but those who do forensic medicine really taboo such words. Although I am also called "crow's mouth", I am definitely not the only forensic doctor with crow's mouth.After listening to Chief Hu's words, I suddenly broke out in a cold sweat all over my back. Before the cold sweat disappeared, the phone in Chief Hu's office rang in response to the occasion. Section Chief Hu answered the phone, his face turned red and white, from surprise to seriousness.After hanging up the phone, he said, "It's really evil, I'm such a bad mouth."

"Is there a murder case?" Although he prayed for peace in the world, but when he heard that there was a murder case, he still had an impulse in his heart. "A young couple died in the small building under the elevated intercity railway in the western suburbs. It is said that it is terrible." Chief Hu frowned. I took out my phone and looked at the calendar: "Tomorrow weekend, why don't I report to Master, and I will go out with you to investigate the scene and investigate this case?" "That would be the best." Chief Hu said happily, "Let's go."

The provincial capital is not big, but we drove for 40 minutes to arrive at the scene.Along the way, we passed the bustling urban area, the quiet farmland, and a dilapidated village, and finally we arrived at the scene.It is completely different from the depressive atmosphere brought by the murder case. This place looks like a paradise. In the early spring, the fragrance of flowers is overflowing, and the exuberant plants surround the three townhouses in the center of the green belt. As soon as we approached, we were enveloped by the fragrance of nature. . I walked around the villa's wall and asked, "How could someone build such a nice house here? Does anyone know that this place will be developed? It's not close to the city."

"This land belongs to a small boss. It used to be a nursery. Later, a high-speed rail elevated was built here. His land was requisitioned. He made a lot of money and changed his career." The police from the district police station said. "He lives here?" I stood on a small slope next to me and looked around.There are nearly 10 acres of land around the villa with various plants.The edge of the nursery is connected to the dilapidated village that we just passed, which is in stark contrast to the low-walled brick houses of the small village. "The little boss changed his career, so he gave this nursery to his sister to take care of, and invested in 3 townhouses here, saying that if they can be developed in the future, they will make money. It’s a good place for Tiannian. At present, the little boss doesn’t live here, and his sister and brother-in-law live here to manage the nursery.”

"In other words, two of these three villas are empty?" I asked. The policeman pointed to the westernmost villa and said: "Yes. It is completely empty and has not been decorated. Only this one has been briefly renovated. The little boss's sister, Bai Changqing, and his wife live here, and they also live here every now and then. It must be on weekends. It's back to the city." I nodded: "Is Bai Changqing the deceased?" The policeman said: "Comrades from the technical department are unlocking the lock technically. You can look at the windows of the bedroom on the first floor."

I put on the on-site investigation equipment, followed the direction pointed by the policeman to a window with a tight anti-theft window, and looked into the house with my head. Curtains were hung on the window, which blocked part of the line of sight, but from a corner of the curtain, one could vaguely see a snow-white arm wearing a silver-white bracelet lying powerlessly on the ground, and the back of the hand was stained with blood.Judging from the obvious corpse spots on the arms and the stench of corruption in the house, we really didn't need to forcefully break the door for rescue. I looked at the policeman who was unlocking the lock, then stepped back and asked the policeman at the police station, "What's the situation?" "Three days ago, on the afternoon of the 25th, Boss Boss, who was doing business in other places, called his brother-in-law Zhou Fang and asked about the situation of the nursery. Zhou Fang said that he had fallen and his ankle was broken and dislocated, and he had been bedridden for a week. , He said he would ask Bai Changqing to call her brother to talk about the nursery until the morning of the 26th." "On the 26th, she didn't call, did she?" Chief Hu interrupted. "Yes." The policeman said, "When Boss Boss called, the phone couldn't be connected. Boss Boss said that Bai Changqing would never turn off his mobile phone, let alone that he couldn't get through, so he called his secretary in the provincial capital company. I drove over and took a look. The secretary found that the door was locked from the outside. It happened that the 26th was Saturday, and the young couple should go back to the city, so they didn't care. The secretary went back to their residence in the city and found that no one opened the door. So I reported the news to Boss Boss. Boss Boss has been uneasy and has been calling for 3 days, but he has been unable to get through. Today, the secretary came to check. The secretary came and found that the door was still locked as it was 3 days ago Yes, I looked in through the crack of the curtain on the first floor and found a dead man's hand." "The lock is open. This lock is really difficult to open. It's a good lock." Just after hearing the preliminary situation of the case, the voice of the police who opened the lock rang out. Chief Hu and I walked to the gate of the villa together, and saw two policemen wiping the sweat from their heads holding a padlock with a unique shape: "This kind of security door is really safe, with built-in locks and padlocks. This This kind of padlock is matched with this kind of anti-theft door. When you go out, you can hang it on the outside and add a layer of lock. At night, you can hang it on the inside of the door and lock it.” "You mean, this lock must belong to the deceased's family?" Chief Hu said. "Yes, absolutely certain." "Then please use the scout pedal to go in and have a look first." Chief Hu turned his head and said to the trace inspector standing aside. Provincial and urban public security bureaus are full of well-trained on-site investigators.The trace inspector quickly put on the inspection pedal, put the board on step by step, and quickly entered the bedroom at the scene.After a while, the trace inspector walked out of the scene along the set-up investigation steps, and said with a dejected look: "Confirmed, two dead." The muscles on Chief Hu's face trembled, and he regretted what he said in the office just now: "I shouldn't say what I shouldn't say in the morning." "Let me tell you, this kind of thing is unbelievable." As I said, I changed the dirty shoe covers, stood up and straightened my chest, and walked into the scene with a sacred feeling. As soon as he entered the gate of the villa, a smell of blood mixed with corruption came to his nostrils. "In this weather, shouldn't it spoil so quickly?" I rubbed my nose.In this early spring season, 3 days should not be highly corrupt. This is a small villa with a standard structure.The first floor is a large living room, kitchen, bathroom, and a bedroom, and the second floor is two rooms.The first floor has been simply decorated, and the stairs leading to the second floor are all rough houses.The trace inspectors were all at the center site—carefully inspecting the traces on the ground in the bedroom, and Chief Hu and I first climbed to the second floor with pedals. The second floor is very quiet, because it is a rough house, the ground condition is very poor, almost nothing can be found.Chief Hu and I carefully checked the windows on the second floor, and they were all locked without exception. "There are anti-theft windows on the first floor, but the windows on the second floor are locked. Could it be that the murderer came in through the door?" I felt very strange. "The anti-theft door on the first floor is double-secured. When you are at home, you will lock it from the inside." Padlock it. Not even a thief can get in." After hearing what I said, Chief Hu looked at me and said, "You can tell it's a case of theft so quickly?" Before we finished speaking, the trace inspector downstairs called us from the stairs: "Chief Hu, Director Zhang is here, let us investigate as soon as possible, and then report the basic situation for further investigation." "What's the situation downstairs?" Chief Hu also shouted towards the stairs. "The two dead are preliminarily determined to be Bai Changqing and her husband Zhou Fang." The trace inspector said, "There is no disturbance at the scene, it doesn't look like a theft case." When Chief Hu heard this, he said to me, "Haha, you're wrong." I shrugged and said, "You understand it yourself. I didn't say that I thought it was a case of theft. I just wanted to express the truth about the lock. good quality." Chief Hu bared his teeth, contemptuous of my sophistry, and then turned his head to the downstairs and said, "The windows upstairs are all sealed, and the entrances and exits of criminals still need to be studied." "There is no problem with the exit." I said, "The criminals must have killed people and left through the gate, and locked the door when they left." Section Chief Hu thought for a while and nodded: "Well, this is the only possibility. But the padlock needs a key to open and lock it. How could the murderer have the key to the padlock? Go down and take Chief Wu of the Trace Inspection Section Instead, Section Chief Wu and I will rule out the possibility of entering from the second floor." I walked downstairs along the steps, called Chief Wu to go upstairs, and stayed in the living room to watch carefully. There is a torn-page calendar in the living room, and the calendar shows that it is the 26th.There is an ashtray under the calendar. There are no cigarette butts in the ashtray, only a ball of crumpled paper.I carefully unfolded the ball of paper, and it turned out to be a calendar that had just been torn off, and "25th" was written on the calendar.I spliced ​​the paper ball and the calendar, and it was undoubtedly torn from the calendar. There is a cement nail nailed on the wall of the gate, which is very conspicuous on the white wall. I walked over to look carefully at the cement nail and its position, and shouted to the upstairs: "Chief Hu, the exit is okay. The key to the padlock should have been hung on a concrete nail at the door, so the murderer could go out smoothly and lock the padlock from the outside." Chief Hu didn't respond, and he seemed not interested in this information. I briefly looked in the bathroom and kitchen and found nothing of value.At this time, a young trace inspector came out of the bedroom, and I said, "By the way, check to see if there are any usable traces on the padlock of the door and the built-in lock handle inside." Seeing the bewildered look on the trace inspector's face, I smiled and said, "At present, the murderer is going out through the gate, and he has to pull the doorknob to leave." After I finished speaking, I walked into the central scene, and suddenly a black shadow flashed in front of my eyes. I took a closer look and found that it was a fly. Then I took a closer look at the corpse, and I was really shocked. A male corpse was lying on the bed, the quilt was lifted, revealing his neat pajamas and pajama pants, his right ankle was wrapped in white gauze, and a sallow foot was exposed in the gap of the gauze.I suddenly remembered the case introduced by the police. Zhou Fang sprained his right ankle a week ago. It seems that the deceased should be Zhou Fang.Lying on the ground on the other side of the bed was a female corpse, also wearing pajamas and pajamas, but the buttons of the pajamas were all unbuttoned, revealing the blood-stained breasts and belly, and the wound was vaguely visible. "It seems that they were killed after they went to bed on the night of the 25th." I said. "Ah? How did you find out?" The trace inspector asked, "Is it through the degree of corruption?" I shook my head and said, "No. There is a calendar in the living room. It can be seen that the page on the 25th was torn off on the night of the 25th. Combined with the clothes of the deceased, we can draw a conclusion." The trace inspector smiled and said, "Oh, let me tell you, this corpse is decomposed in a strange way, and it should be impossible to tell the time." I approached the corpse and took a closer look at the heads of the corpses. The two corpses in front of me were completely unrecognizable. The facial features could not be seen clearly on the dark faces, and there were large bloodstains under the heads of the two corpses.It turned out that the heads and faces of the two corpses had been hacked to pieces, the eyeballs were bulging out of their sockets, the broken teeth were stuck to the jaws, and the noses were crooked to the side, making it impossible to distinguish the faces.The neck of the corpse was completely cut open, exposing the white trachea.The huge wound formed by the connection of many wounds on the head, face and neck of the corpse was open, and white maggots could occasionally be seen wriggling in the wound. "There is a reason for the strange degree of corruption." I know what the trace inspectors mean. They have seen the whole body corrupted, but they have never seen the highly corrupted head and face of the two corpses in front of them, but the body is not corrupted at all.I took out an alcohol cotton ball from the investigation box and wiped the blood on the chest of the deceased woman, revealing her snow-white skin. "Look, the rest of the tissues are not very corrupt." I said, "It's just that the head and face are highly corrupted, and the degree of corruption of the head and face is quite different from the rest of the body. That's what you mean by strange?" The young trace inspector nodded. I said: "We can notice that the soft tissue of the head and face has been completely cut open, and a lot of blood has been lost. Where the corpse is located, there is a large pool of blood under the head. The subcutaneous tissue soaked in the pool of blood and exposed to the air will naturally It rots faster than other parts." I saw Wang's forensic doctor beside me nodded in agreement with me, took out the tweezers in the investigation box, picked up a white maggot in the wound, and put it into a test tube filled with alcohol.After a while, the maggot stopped struggling.I took out the dead maggots again with tweezers, measured them carefully with a scale, and said: "In summer, the maggots grow 0.8 millimeters per day, and this season is slower. The maggots are less than 2 millimeters, and the death time calculated by entomology is also It should be about 3 days." When the trace inspector saw me moving the maggots in a corpse, he couldn't help feeling sick and retched. I smiled and said, "Can you make any preliminary judgment on the nature of the case?" "The whole bedroom has not been messed up, and everything is placed in an orderly manner. It really doesn't look like a case of theft." The trace inspector calmed down and said, "At first we saw that the pajamas of the deceased woman were unbuttoned." , suspected to be rape, but at present, her pajama pants have not been taken off, so it doesn't look like rape. It seems that the possibility of vendetta is relatively high." "Well, the male deceased was killed by beheading his head and face directly while he was asleep. The blood didn't show any signs of movement, which shows that the murderer did it directly after entering the bedroom. I also think it's a revenge killing." Forensic doctor Wang said , "This situation has been reported to the task force, and the investigators also believe that it is more likely to seek revenge, and now Director Zhang has arranged for 5 teams of investigators to start peripheral investigations. I see, those who do business, those who make enemies The possibility is still relatively high.” "Yes." The trace inspector saw that Wang's forensic doctor supported his point of view, and said, "And the head, face, and neck of the deceased were chopped up. It's not because there was a deep hatred. How could such a cruel hand be dealt with?" "The pajamas of the deceased woman were untied, how to explain it?" I asked. "My analysis is that the murderer saw the beauty of the deceased and wanted to molested him." Forensic doctor Wang said, "There were no traces of fighting at the scene. According to the analysis of blood stains, the female deceased should have been awakened because she slept inside the house and could not escape through the door. Those who fell to the ground after being cut on the head did not struggle or turn over after falling to the ground. The dozens of cuts on the face must have been cut at the original position." I squatted on the ground, watched the splattered blood spread around the dead woman's head, and nodded in approval of Wang's forensic doctor's judgment. "So, the murderer didn't intend to rape." Forensic Wang continued, "It was just obscenity after killing." I didn't speak, I stared at the bottom of the TV and said, "What do you see?" Everyone looked towards the middle layer of the TV cabinet, which was empty except for a few exposed wire ends. The trace inspector went to the TV cabinet, carefully picked up the end of the wire, and said, "This is a fresh trace that was cut." I looked around the TV cabinet and said, "There is no cable TV installed in their house. If you want to watch TV, you have to connect DVDs, but the DVDs underneath have obviously been cut and taken away by someone. What is this?" Condition?" Wang Fayi frowned and said, "That's right. If the DVD is broken and sent for repair, it's not necessary to cut the cable. What does this action mean? Is it related to a crime?" I shook my head, expressing that I didn't know.Everyone was silent, and suddenly an excited voice came from the living room, which attracted everyone to the living room. In the living room, the young trace inspector said: "Just now I carefully looked at the handle inside the door, and there seemed to be some traces, so I used a reagent to reveal it and found an incomplete blood fingerprint." "Good thing!" I said happily.It appears that the accurate determination of the killer's exit from the crime scene paid off. "It seems that this case has good conditions to solve the case." The trace inspector who was investigating the bedroom just now said, "There are many blood footprints found on the floor of the bedroom. As long as the suspect's shoes are found, it is also of comparative value." "Fingerprints are enough." I said, "The key is to look at the blood footprints in the bedroom. How many people are there?" "One person's, it can be determined." The trace inspector said, "Also, the blood fingerprint on the doorknob has only the value of exclusion, not the value of identification. It is incomplete." Section Chief Hu came down from upstairs at this time and said: "A dust fingerprint was found on a window on the second floor. I don't know if it has a direct causal relationship with this case." "How?" I asked. "This fingerprint is very fresh, and it looks like it's recent." Section Chief Wu said, "But the windows on the second floor are very high from the ground, and there is no climbing object nearby, unless the murderer brought a ladder and climbed the ladder to enter. , and closed the windows after entering.” "That means the murderer came prepared and has anti-investigation awareness." Chief Hu added, "This possibility is still very high. If the murderer comes in through the window, it can explain a problem." I looked at Section Chief Hu and said, "The windows on the second floor are push-pull, smaller than ordinary windows, and can only be opened halfway, so Teacher Hu means that the murderer is short in stature." Section Chief Hu saw that I understood his mind, smiled and nodded. "It's a pity that the fingerprint on the door handle is not from the same finger, so we can't confirm it further." The young trace inspector compared the two fingerprints while we were talking, and said, "But at least it can show that the murderer didn't wear gloves." "As a person with anti-detection capabilities," I said, "it's a bit contradictory to commit crimes without gloves and leave so many traces." "The mobile phones of the two deceased were not found." Another trace inspector wiped the sweat from his forehead and said, "It should be taken away by the murderer." I lowered my head and thought for a while, but couldn't figure it out, so I said, "Stealing the mobile phone, not looking for money, and not taking the platinum bracelet on the dead woman's wrist, is unreasonable. No, Mr. Hu, let's go to the body for an examination first. " "Wait." A loud voice sounded, and I looked up, and it turned out that Master had arrived. Master said: "Take away the corpse first, let's go for a walk around." Master and I bowed our heads and walked towards the dilapidated small village. Master walked straight all the way as if he had a purpose. "Did Master suspect that people from this village committed the crime?" I could see what Master was thinking. "I just listened to your introduction," Master said, "Since it is possible to bring a ladder to climb the window and enter the house, then this person must not live far away. Who would live far away and bring a ladder to kill?" I nodded, didn't speak any more, and followed Master silently. After a short walk, we came to the entrance of a dilapidated small village.A pile of ashes attracted the master, and he walked slowly to the ashes, put on his gloves, picked up a branch, gently shook the ashes, and said, "Look, there are pieces of clothes here." "The ashes are very fresh." I said, "Do you suspect that someone burned the bloody clothes here?" The master nodded and said: "The two deceased had a lot of wounds, and the murderer must have a lot of blood on his body. The murderer usually burns the bloody clothes near his home. This is a general rule. So I think the murderer probably lives in the In this village." "This village is not small. There are hundreds of people in total." The investigator said, "Shall all fingerprints be taken?" "No." The master said, "Firstly, there is too much movement, and it will startle the snake. Second, the blood fingerprints at the scene are not of value, and the dust fingerprints cannot be definitely related to this case, so it is very difficult to solve the case by comparing fingerprints. Let's take a look first." Corpse." In the dissecting room, there were two young dead people, whose faces could no longer be discerned. The injury of the male corpse is very clear. The massive slashing wounds on the head and face lead to the complete collapse of the facial skull.Unfortunately, the male deceased did not die immediately after receiving such a violent blow, because the incision wound on his neck still had obvious life reactions, the carotid artery was completely severed, and the blood in the corpse was basically drained out.The corpse did not resist the wound, and apparently died of a sudden blow in sleep. The damage to the female corpse is very complicated.The fatal injuries were also a large number of slashing wounds on the head and face and cutting wounds on the neck, but her hands were cut open, and the ring finger and little finger of both hands were only connected to the palm by a trace of skin, which was an obvious resistance to injury. .In addition to these injuries, there were more than 20 small 1 cm long wounds on the chest and abdomen of the deceased woman. The small wounds were scattered around the breasts and navel of the deceased. Some had slight life reactions, and some had no life reactions at all. "Some of these small wounds are near-death injuries, and some are injuries after death." I said, "It seems that the murderer stabbed for a long time. Could it be that he unbuttoned the dead woman's pajamas just to stab these more than 20 wounds?" Wound? What does that mean?" "Think about this issue carefully." Master said, "What I want to know more now is your judgment on the instrument of injury in this case." "A chopper with a certain blade length, sharp, easy to swing, and with a certain weight..." I said, "It should be a kitchen knife or a machete." The master nodded, pointed at the wound on the chest and abdomen of the deceased female with the hemostat, and said, "What formed this small wound?" "The corner of the kitchen knife?" I asked. The master did not comment, pinched one of the wounds with his hand, pointed to the corner of the wound and said: "The wound formed by the corner of the kitchen knife will have one blunt corner and one sharp corner, right? But look, both corners of this wound are blunt. .” "Blunt weapon?" I was at a loss. The master shook his head, lifted the skin, pointed to the abdominal cavity of the deceased, and said, "Some wounds only reached the subcutaneous level, but some had already entered the abdominal cavity. The deepest wound actually injured the ventral side of the spine." "You mean this tool is very long?" I measured the depth of the wound, and it was 15 centimeters long. "Look at this place where the bone is injured." Master said, "The bone marks are not triangles formed by the corners of the kitchen knife, but a line." "It means the tip of the tool is flat," I said. "Flat headed, blunt at both ends, 15 centimeters long..." "Screwdriver (screwdriver)!" I interrupted Master's question. "Yes, it's a screwdriver." Master said, "Since the screwdriver was damaged at the scene, and the murderer did not turn it over at the scene, and there was no toolbox at the scene, it is impossible for the murderer to find the screwdriver at the scene. So what is the problem? " "The murderer brought his own!" I said, "The murderer has a kitchen knife and a screwdriver. Could there be two murderers?" The master shook his head: "There is so much blood at the scene, if two murderers both harmed the deceased, there should be bloodstains on the shoes, it is impossible to find only one person's shoe prints at the scene. Therefore, through trace analysis, it is certain that it is a murderer. The murderer committed the crime." "What does that mean?" Section Chief Hu also asked in surprise. I lowered my head and thought for a moment, and said, "It means that the criminal's purpose of committing the crime is to steal." Master was very happy when he saw that I answered the question correctly, and said, "Very good, that's what I mean. This case should be a theft case." Section Chief Hu nodded in agreement and said: "Yes, at first we thought it was a revenge killing, and now we have to notify the special case team to change the direction of investigation." "It's not important." Master said, "This case is already at hand, and there is no challenge. Next, we should go to the special case team and communicate with the investigation unit, and the problem will naturally be solved." The technician in charge of taking pictures was confused by what we said, and asked: "Wait, how can you be sure that this is a case of theft?" "It's based on experience," Chief Hu said. "Since we have deduced that the murderer must have carried a screwdriver, then we can be sure that the murderer's purpose is to steal. Think about it, how can a murderer bring a screwdriver? A thief The usual tool is a screwdriver, but the kitchen knife is an auxiliary tool for self-defense." I didn't listen carefully to Section Chief Hu's explanation, but I was thinking hard about the meaning of Master's saying "hands on hand".I think this case is still unclear, where is there any sign of "handy"?So I couldn't help asking: "Through our previous analysis, the criminals are likely to live in a village near the scene. But you said that it is very difficult to compare fingerprints, so where did they come from?" "Let's reveal the answer later." The master said, "I'm not sure about my deduction at the moment. I can only make a decision after meeting with the investigation team." I didn't continue to break the casserole to ask the bottom line. I walked silently with Master through the night and walked into the large conference room of the special case team of the Provincial City Public Security Bureau. "Before we said that we would thoroughly investigate the village with ashes at the entrance of the village near the scene." Master cut to the chase, "How is the current investigation going?" "There is only one afternoon, it's too tense." The sponsoring investigator said, "The list of people in this village has been sorted out, and now we are checking the people who are still living in the village around the time when the incident occurred. In order to find out who may have time to commit the crime one by one. This village is located in the urban-rural fringe, and the population flow is also very frequent. There are too many people and too many people, so it is not easy to find out." "At present, the investigation of the conflicting relationship between the deceased has also reached a deadlock." Another group of investigators said, "These two people are concentrating on running the nursery, and they are all in contact with business people. They are currently investigating one by one. Through the investigation in the afternoon, It reflects that the couple are loyal and do not conflict with others." The master bowed his head and thought for a while, then said slowly: "Is there a family in the village with a mentally ill son?" The venue was silent, and suddenly, the director of the district police station said: "There is no mental illness, but there is a son of a family with intermittent mental disorders. The father's name is Wang Hui." The master nodded and said, "Then, is Wang Hui's son short in stature?" The chief of the police station said: "Yes." Master continued to ask, "Is this family very poor?" The host investigator interjected: "I went there today, and the family is poor. There is nothing except a broken bed, a broken table, and a broken TV. There is no electrical appliance such as a refrigerator or an air conditioner. There is a son in the family who got meninges when he was 10 years old. Yan, without timely treatment, is now in a state of mental retardation and mania at times." Master looked at the lead investigator and said, "Did Wang Hui say that his child was at home the day the crime happened?" "That's not true." The investigator said, "But he has always emphasized that his son never goes out, but stays at home, eats and sleeps. But, how do you know these things?" "The corpse told me." The master said with a smile, "Now let me analyze it for you." Master took a sip of water and said slowly: "Let's talk about the main things first. Let's start with the strange knife wounds on the corpses. First, the heads, faces and necks of the two deceased were cut dozens of times. In this way This situation can be seen in two types of cases, one is deep hatred, venting anger and disfigurement, and the other is mental illness homicide. Second, the clothes of the deceased woman were unbuttoned, and there were multiple stab wounds caused by screwdrivers around the breasts and navel, but the autopsy confirmed that the deceased did not Suffering from sexual assault, this situation can also be seen in two cases, one is a murder by a sexual pervert, and the other is a murder by a mental illness. Third, the cut thread of the DVD player was found at the scene, and it was determined that this case was a theft case. Who stole for the purpose of stealing DVD and mobile phone without flipping the scene, and without taking the gold bracelet of the dead woman? There is only one explanation. The murderer has never seen a DVD player, and he doesn’t even know how to pull out the thread. It is very valuable. Such a person can only be mentally retarded or mentally ill. Combining the three aspects, only a mentally ill person can make such a scene." I nodded approvingly, and said: "Intermittent mental disorder, in this case, it can explain why the whole crime scene sometimes makes people feel that the murderer has anti-investigation awareness, and sometimes it seems that the murderer has no anti-investigation awareness, and even brought a ladder when committing the crime. Comprehensible behavior can be done. This is because his behavior has no clear thinking to maintain, sometimes clear and sometimes confused, so the whole crime scene is puzzling." Master went on to say: "The reason why I analyzed that this person's family is very poor is because even if the murderer has a mental disorder, he should be able to understand what a DVD player is under normal living conditions. In this era, even DVD players don't know what it is. You can imagine how poor his family is." I interjected again: "Yes, the short stature is analyzed because the windows on the second floor of the scene are narrow, and those who can get in are naturally short in stature." Section Chief Hu added on the side: "Well, listening to what you said, almost all the doubts can be explained. I have been thinking about a problem before. The male deceased was beaten to death on the bed without any struggle, and even resisted. This is very strange. Because theft and murder usually involve entering the house and flipping things to wake the victim up, and then killing the victim as a last resort. In this case, the murderer killed almost as soon as he entered the bedroom, which is very incomprehensible." The master continued: "It's very simple. I think the murderer should understand the habits of Bai Changqing's family. Victims usually go home on Friday and come back on Monday, and it happened that the day of the crime happened on the 25th, Friday. It is very likely The murderer thought that Bai Changqing had returned to the city, so he came to steal at night. Unexpectedly, Zhou Fang injured his ankle, and it happened that they did not return to the city that night. After the murderer entered the bedroom, he was surprised that there was someone in the bedroom, but because the victim He didn't wake up. If he was a normal person, he might escape or continue stealing quietly. But if the murderer is a mentally ill patient, this level of fright will seriously stimulate his mental state, and it is very likely that he will induce mania. Therefore, This kind of thinking is actually abnormal.” Everyone nodded in disbelief. Master went on to say: "Further consideration, the murderer is mentally disabled, and his mania was triggered after the murder. Although it is possible to lock the gate of the scene with a padlock after committing the crime, it is unlikely that he would have thought of burning the bloody clothes and destroying the evidence. Then, if they的焚烧灰烬确定是血衣的话，很有可能是他的家人帮忙销毁证据，既然证据都销毁了，他自然会极力隐瞒他儿子是有作案时间的。” 就在这时，DNA检验室的技术人员走进会议室，低声和张局长耳语了几句。 张局长说：“灰烬里发现的衣服碎片，检出死者血迹。” “那就抓人吧。”师父和张局长说道。 张局长显得有些迷糊，说：“我们还没有直接指向他的证据，嫌疑人又是精神障碍，贸然抓人，可靠吗？” “相信我，尸体不会说谎。”师父说，“尸体上奇怪的刀伤，已经说明了一切。” 张局长想了想，一声令下，3辆警车驶出了公安局大门。 师父、胡科长和我在专案组会议室里静静地等待着回音。 1个小时以后，张局长的手机突然响起，电话的声音很响：“张局长，是他干的，他家的床底下发现了割断电线的DVD机和两部手机！另外还有一把钥匙，怀疑是死者家大门挂锁的钥匙。” “好吧，把嫌疑人和汪会一起抓回来。”张局长说，“这个汪会涉嫌包庇。” 夜还未深，专案组就得到了好消息。汪会在证据面前很快低下了头。原来26日早晨，汪会发现自己家的梯子横着放在院子里，顿时有了不祥之兆。待他跑到儿子的房间时，发现儿子满身是血地躺在自己的床上呼呼大睡。汪会也不知道儿子干了什么事，只觉得不好，于是把儿子身上的血衣和床单、被褥悄悄地拿到村口焚烧。可是他不知道自己儿子盗窃来的DVD机、手机和钥匙放在床下，留下了致命的证据。 对汪会之子的审讯难度很大，他赘述了很多不相干的问题，但是提到男死者的时候，他咬着牙，眼露凶光地说：“杀！杀！”而提到女死者的时候，他却只会流着口水说：“奶子，奶子。” “从这个嫌疑人的陈述碎片中，已经明确反映出了他的作案过程。”师父说，“既然汪会承认血衣是他儿子身上穿的，血衣上又有死者的血迹，那么这就是直接证据。” “不仅如此。”胡科长说，“刚从痕检部门得到消息，汪会承认烧毁了犯罪嫌疑人的鞋子，我们已经从他交代的地方买到了一双一模一样的鞋子，鞋底花纹和现场一致。现场提取的两枚指纹，也都和嫌疑人对上了。这是铁案。” “铁案又能如何？”我郁郁寡欢，“精神病杀人，不负刑事责任。可怜了这一对苦命的夫妇，那么年轻就枉死了。” “是啊。”师父也受到了我情绪的影响，“住在偏远地区，本身就有风险，夜间关紧门窗太重要了，如果他们二楼的窗户也扣紧，就不会有这样的悲剧发生。仅仅是百密一疏，疏忽了一扇窗户，却酿成惨案，真是可惜了。”