Chapter 3 Chapter Two: The Mystery of the Two Corpses

The weather is getting hotter, and it has entered the "peak season" of forensic work.According to research by psychologists, people are irritable and easily irritated in summer, so crimes increase accordingly.Indeed, in our forensic records, the frequency of suicides, accidents and homicides in summer is much higher than in other seasons.So forensic doctors don't like summer, not only because there is too much work to do, but also because the corruption caused by the hot weather is accelerated, and the smell always makes people unable to recover for a few days. "I wish I was born in Iceland." Dabao flipped through the photos of a case of highly corrupt corpses sent by the public security organs at the grassroots level, and said, "There is no summer and no highly corrupt corpses. It must be very pleasant to be a forensic doctor in Iceland." things."

"Just be content with it." I said absently, "You should be thankful to the Buddha for not having you born in Africa." For a month, I was constantly disturbed by the same nightmare and couldn't concentrate on doing things.The nightmare scenes are always the same, the screaming girl, the man who can’t see his face, the crying old man, the crowd of onlookers... Ever since Ling Dang told me the story of Xiaoxiao, this unsolved case has become a fishbone, from time to time Earthworm in my throat. But the cases are always continuous, I have never had the opportunity to investigate this old case, maybe now is the best time.I sat in front of the computer, opened the system of the provincial department, and entered the name of "Lin Xiaoxiao" in the victim column.Thanks to the powerful collaborative case handling system, the case information was quickly presented in front of my eyes.

The story that happened that day was roughly the same as what Bell said. At that time, Lin Xiaoxiao, a middle school student who was still living in school, left the dormitory to go to the bathroom at night. She went there for more than two hours. The lights in the dormitory were turned off, and she hadn't come back yet.The girls in the same room went out to look for her and did not find her, so they called the police.The police found Lin Xiaoxiao's body in the woods behind the toilet in the middle of the night. Of course, there are also photos of the scene in the archives.The first one is a panorama.The scene was in a gloomy grove, surrounded by darkness, only a group of red shadows could be seen vaguely.It was only in the next close-up photo that Lin Xiaoxiao's miserable state appeared in front of him.She was lying on her stomach, her long hair covered her face, and her hands were tied behind her back with a green nylon rope.The red pajamas on her upper body were messy, but her lower body was naked.Pajama bottoms and panties were strewn over one side of the body.Lin Xiaoxiao's legs were spread apart, and the soil under her legs had obvious kicking marks. It seemed that this was the first scene where she was killed.If Ling Dang's uncle saw such a scene, how could he not be severely stimulated?

The autopsy report of the forensic doctor was also attached to the file. The report stated that the deceased's mouth and nose were deformed, and there were soil impurities in the mouth and trachea. It was analyzed that the face of the deceased was pressed on the soft soil by the murderer, resulting in mechanical suffocation.The wounds in the place where her hands were bound and in the vagina were not obvious. That is to say, the murderer took Lin Xiaoxiao to the scene of the crime and pressed her face into the mud until she was suffocated and stopped struggling. He was not dead, so he tied his hands and raped him.In fact, Lin Xiaoxiao was already dead at this time, and the murderer was raping the corpse.

From this point of view, the case is not difficult. I thought to myself, with just a few photos and identification documents, I can basically restore the murderer's crime process. Why has Lin Xiaoxiao's case not been solved?I continued to scroll down until I saw the "evidence" column, and I realized that there was not enough evidence in this case to identify the suspect. No, since it is a rape case, there are always sperm spots, right?Why no biological samples were extracted?Judging from the vaginal injuries of the deceased, it was mostly abrasions, and the damage was evenly distributed. It didn't look like obscenity, but it should be a rape corpse.Why can't there be evidence?

Just as I was deep in thought, the phone rang sharply. It was Master who asked me to go to his office. "It's just right, I'm going to ask about the selection." I closed the window of Lin Xiaoxiao's case and said to Dabao. In the past few years, the investigation of the murder scene was mainly carried out by my master. The work pressure of the two of them was huge, so we planned to select a forensic doctor from the grassroots public security organs to join the forensic medicine department of our provincial department.The most ideal candidate is of course Dabao.His one-year study period in the provincial department is coming to an end, and it is our wish to keep him.But as soon as I entered the door, Master poured cold water on me, telling me that the selection examination and interview are not up to us.

"Why don't our employers have autonomy?" I shouted unconvinced. "There are formal organizational procedures for the selection." Master frowned. "This is done for the sake of fairness and justice. Otherwise, why would the Political Department help you with the work? You want whoever you want, so it's not a mess? " "What is fair and just?" I said, "I just want Li Dabao." "Li Dabao?" Master bared his teeth and said with a smile, "It's no use even if you want Li Changyu, you still have to take the exam. Stop talking nonsense, let Dabao concentrate on preparing for the exam, and get ready to go to Tingtang, Tingtang City last night There was a homicide case in the district, one dead and one injured, the nature is bad, and we can talk about other things after the case is solved."

Seeing that the "appeal" was fruitless, I didn't continue to ask about the whole story of the Tingtang City case. I returned to the office with my head bowed and silently packed up the on-site investigation tools. "It's okay." Dabao had already expected this result, "I'll do my best." I stood up suddenly, took off the belt around my waist, pulled the table, and said, "Don't talk nonsense, review, hurry up!" Speechless all the way, I quickly drove to Tingtang City.Zhao Yong, the forensic doctor of Tingtang City Public Security Bureau, who had finished his studies at the Provincial Department, was waiting for me at the exit of the expressway.After not seeing each other for several months, I got out of the car and gave him a friendly shoulder.

"One dead and one injured, do you still need our forensic doctor?" I said, "Can't all the injured in the crime process tell their own stories? There is no need for on-site reconstruction, right?" "Yes." Lin Tao got out of the car, stroked his hair, and agreed. "Don't mention it." Zhao Yong said, "It was the wife of that family who died. The police arrived quickly. Her husband was not dead at the time. He was rescued all night last night. He woke up this morning and felt that he was not very conscious. The police hadn't talked much In other words, when you were still on the road just now, you died."

"Dead?" I was taken aback. This case of one death and one injury turned into a case of two deaths. "That's right." Zhao Yong said, "The injured was diagnosed with a ruptured heart. He underwent emergency heart surgery last night. After the surgery, his condition remained unstable. This morning, he suddenly had cardiac arrest and died." "Who is the dead man?" I asked. "The deceased were an old couple, both elementary school teachers. They usually kept a low profile and did not find any enemies." Forensic Zhao said, "The murderer came to stab people."

"Can it be ruled out as property infringement?" Hearing that both of them were dead, I was eager to understand the basic situation of the case so that I could have a better idea before conducting on-site investigation. "It can't be money infringement." Forensic doctor Zhao said, "The male deceased told the investigators that the murderer stabbed people as soon as he entered the door, didn't say anything, and left after stabbing people." I nodded silently: "The movement is simple and clean, it should be a vendetta." "That's the fault." Zhao Forensic Doctor said, "The old couple's life is very simple. The investigators searched all night and found no contradictions. There is no reason for the killing due to hatred." "Could it be that he killed the wrong person?" I turned cold, "If it was revenge for the wrong person, it would be difficult to investigate." "Let's go to the bureau first and watch the video of the investigator interrogating the dead man when he was awake after being rescued." I nodded, which is a compliment to Tingtang City Public Security Bureau's strong awareness of evidence collection. When he arrived at the forensic office of the Municipal Bureau, Zhao Yong took out a CD and stuffed it into the CD drive of the computer.Soon, a scene of a hospital ICU (intensive care unit) appeared on the display.I shook my head, always feeling like I was watching a TV show. A man in his fifties was lying on a bed in the ICU, with a white quilt covering his neck. Various tubes and wires protruded from the side of the quilt, and a yellow dot flickered on the monitor beside him. The man also had a tube in his nose, and his eyes were half-opened wearily. There were two plainclothes policemen sitting beside the bed, and one of them asked, "With the doctor's permission, we will ask you a few questions. If you feel you can answer them, answer them. If you feel uncomfortable, we will stop the conversation at any time." The man nodded feebly. The policeman asked, "How did you get injured yesterday?" Man: "After ten o'clock, someone knocked on the door. I opened the door and stabbed me when I entered." After speaking, he coughed violently a few times. Police: "How many people? Do you know them?" Man: "An unknown ruffian." Police: "Do you know why he stabbed you?" The man shook his head. Police: "What does he look like?" Man: "Black clothes, white clothes, crew cut, I don't remember the others." "How tall are you? Fat or thin? Are there any characteristics? What color clothes are you wearing?" The man shook his head again. "Do you have any enemies? Or have you offended someone recently?" The man was silent for a while, then shook his head and said, "I have lived my whole life, and I have never made an enemy." At this time, the policeman may have noticed the abnormal expression on the man's face, and suddenly stood up and held his hand, and beckoned another policeman to call a doctor. Ten seconds later, several doctors and nurses rushed in to give first aid to the man. In the end, the doctor straightened his upper body, shook his head, and began to pack the instruments. My scalp was numb. Although I was a forensic doctor and faced death all day long, after the end of my internship in the hospital, I never saw a living life die. I gathered myself together and asked, "He died suddenly. Didn't he just ask for an inquiry? Didn't the family members bother the police?" Zhao Yong said: "The family members of the deceased were very emotional and strongly urged us to interrogate the deceased and solve the case as soon as possible, otherwise we would not ask rashly. Moreover, they only asked after the doctor's permission, and set up the camera to prevent accidents. , I didn’t expect that an accident really happened. No, it can’t be said to be an accident. Later, the doctor said that he had coronary heart disease before his death, and the trauma caused his heart to rupture. , has nothing to do with the inquiry." Feeling a little comforted in my heart, I nodded, and all I could think about were the short words the man said. "From this video, we can only know that the murderer kills as soon as he enters the door, and leaves after he kills." Lin Tao said, "The other thing is that the murderer has a crew cut. Even the clothes are not clear, and the amount of information is too little." "I've been thinking," Zhao Fayi said, "Didn't he have hallucinations at that time, seeing black and white impermanence?" I admit that my laughing point is low. Although I know that I shouldn't laugh at this time, I was still amused by Zhao Fayi's serious face but such imaginative words: "At that time, his mind was really not very clear, and black and white were impermanent." What does it matter? You can’t believe everything you say in this situation.” Xu Jian, head of the criminal police branch of the Tingtang City Public Security Bureau, suddenly walked into the forensic room and interrupted us: "The leaders of the provincial department are here, have you finished watching the video? Then let's listen to the case team's introduction." At the special case meeting, the lead investigator introduced the case: "Yang Feng, the male deceased, was 53 years old, and the female deceased, Cao Jinyu, was 49 years old. They were husband and wife. They both taught in the city's Hongqi Primary School. Teaching third-grade Chinese. They have a son and a daughter who both work in the provincial capital. The family members are low-key and gentle, and never conflict with others. After investigations last night and this morning, no conflicts of love and hatred were found. Last night At 10:30, the small shop near the teaching building of Hongqi Primary School was just about to close. The shop owner saw Yang Feng rushing out of the corridor, covered in blood, and fell to the ground, so he reported the crime. When the police from the police station arrived , Seeing Yang Feng dying, he immediately dialed 120. The ambulance arrived and took him to the hospital. Another group of policemen learned from the shop owner that he was a resident of the building, so they went up to the scene on the second floor and found that the door Open wide, there is a woman lying on the door of the bedroom on the inner side of the living room, and the accompanying doctors failed to save the woman's life after rescue." Xu Detachment added: "The case is like this. It seems very simple, but it is actually very difficult. There are no clues. There is no surveillance within two kilometers of the scene, and the neighbors of the deceased also said that they did not hear any movement or see any strangers. After all, at this time, the scene is on the outskirts of the city, and there are no pedestrians on the nearby roads." I nodded and said, "Don't waste time, let's go and see the scene." The scene is located in the teaching building behind the campus of Hongqi Primary School on the outskirts of Tingtang City.This is a small courtyard composed of three small four-story buildings side by side. There are doors on the east and west sides, and there are walls around the back and front of the building.There is a self-built bungalow next to the door on the east side, which is a small supermarket.The building is an old building built in the 1980s, and the corridors are very dark, even during the day. The center site is located on the second floor of a small building in the middle. In order not to hinder the travel of other residents, the corridors are not blocked.The police sent by the police station took a chair and sat at the door to guard the scene.Seeing us coming, the police from the police station quickly got up and opened the door. Although the house is very old, the internal structure is more in line with the current trend. It can be seen that such a house structure must have been extremely different at that time. As soon as we entered the door, we stood on the westernmost side of a relatively large living room.A set of sofas is leaning against the wall on the northeast side of the living room, and the doors to the two bedrooms are on the east side of the living room. The scene is a concrete floor with many broken places, and sundries are piled on the table in the center of the living room.The overall feeling is that this house does not have the atmosphere of a scholarly family at all, it is more like a lair for a lazy man who lives alone. There was a large pool of blood on the ground at the door of the room, and there were also blood pools formed by dripping blood at the corner between the sofa and the wall. There were dense dripping blood spots between the two pools of blood. , with no obvious directionality. On the other side of the sofa near the door of the bedroom, there was a large pool of blood, which still had traces of mopping. "Is that where the dead woman fell?" I asked, pointing to the pool of blood at the door of the bedroom. The trace inspector at the scene nodded. Lin Tao looked at the ground and said, "Why are there so many bloody footprints?" The trace inspector said: "We have carefully identified these. They are all the footprints of the male deceased and the policemen and doctors who participated in the rescue. No strange footprints were found." Lin Tao said: "Impossible, there is so much blood at the scene, how could the murderer leave no footprints?" I said, "It's possible. If the murderer's action was simple, he left after stabbing two people, and the blood hadn't had time to accumulate on the ground. Of course, there would be no blood footprints." I followed the bloodstains around the living room for a week, and then said: "In addition, the bloodstains are all in the form of drops, without any splash-like bloodstains. It should be that the major arteries were not injured, and the injuries were all important organs. Since there is no arterial spray Splattered with blood, the murderer may not have much blood on his body." "The method is quite ruthless." Lin Tao said, "What kind of hatred is there?" I beckoned Lin Tao to come over, and the two of us squatted together at the corner between the sofa and the wall, and I said, "Look, the dripping blood here is very dense, but how can there be dripping blood here?" Lin Tao looked at the pool of blood at the gate and said, "Yes, this place is about five meters away from the gate. The deceased said the murderer stabbed him as he entered the gate. Then whose blood is this pool?" I shook my head and said, "No, I said that it's useless to ask when you're not conscious. I think the murderer didn't stab people when they entered the door, but stabbed people on the sofa." Lin Tao and I pondered for a while, and I said: "If someone was stabbed at the door, why did the deceased walk back to the sofa after being injured, and then run out to call for help? This is unreasonable." Lin Tao nodded. I thought about it, and then said: "No, there is another possibility, that is, the murderer stabbed the man at the door, and then saw the woman at the door of the bedroom, so he went in and stabbed the woman. At this time, the man was injured. Walking in pain, he probably wanted to save the girl. When he reached the blood-stained place on the west side of the sofa, he found that the murderer had already stabbed the girl and left. The man stood here for a while to recover his strength, and then fought Run as hard as you can and call for help." Lin Tao said: "What you said may completely explain the shape of the bloodstains, but it cannot explain the shape of the traces. You see, there are faint blood footprints between the blood pool on the west side of the sofa and the blood pool at the gate, which are the footprints of the male deceased. The tip is towards the gate, that is to say, the male deceased walked from the west side of the sofa to the gate. We did not find any footprints walking from the gate to the sofa.” I nodded and said, "Yes, if the male deceased walks in from the gate to rescue the female deceased, he should have a certain speed, and the dripping of blood should not be in such a basically vertical dripping shape. The two pools of blood The dripping blood in between is all vertical big drops, it should be a lot of bleeding, dripping when people move slowly." Lin Tao said: "However, the kind of hero you mentioned to save his wife cannot be completely ruled out. Maybe he moved slowly to the west side of the sofa, then slowly moved to the gate, and then ran out to call for help, and happened to leave no blood footprints." After all, the male deceased said that he was stabbed at the gate, and there was a pool of blood at the gate, which is still in line." "Yes, this needs further judgment." I said. "Is it meaningful to judge this?" Lin Tao said. I smiled, pointed to a bag on the sofa and said, "Did you see what's in the bag?" Lin Tao obviously didn't read it yet, so he opened the bag curiously and said, "Wow, this primary school teacher has a good life, drinking Wuliangye." I said, "It doesn't necessarily mean that the treatment is good. Teachers are very popular nowadays. Parents of only children certainly hope that teachers can take care of their children. It is normal to give teachers some gifts." Lin Tao said, "You don't suspect that the murderer gave Wuliangye to the deceased, do you?" I said: "If the deceased was stabbed on the sofa, it is very likely that there was a fight when someone came to give gifts. If he was stabbed at the door, the two bottles of Wuliangye have nothing to do with the case." "I don't think it's possible that the murderer came to give the gift." Lin Tao said, "If the murderer had a passionate quarrel while giving the gift, why didn't the dead man mention a word? He was talking about a ruffian he didn't know stabbed him. No matter how delirious he is, he wouldn't fantasize about being stabbed by a ruffian, would he? At least he should be a parent, or a gift giver, right?" "What you said is also reasonable, let's continue to look for other clues." I turned to the trace inspector and said, "Has the blood sampled at the scene been tested for DNA?" Team Xu's voice suddenly sounded at the door: "It's done, and I'll report to you as soon as the results come out." I smiled and asked, "Any surprises?" Xu Detachment said: "Unfortunately, it is exactly as we imagined. The dripping blood in the corridor extending to the vicinity of the small shop is all from the male deceased. It’s all from the dead men. The pool of blood at the door of the two bedroom doors to the east of the sofa is all from the dead women.” I pondered for a moment and said, "How much did you extract?" "We divided the bloody area into five areas, and extracted five copies from each area." "A total of twenty-five test materials have been submitted?" I shook my head and said, "It's too little. There is so much blood at the scene, and only twenty-five test materials cannot represent all of them." Team Xu said: "Qin Fayi, you didn't expect us to mention the suspect's DNA at the scene, did you? There was so much blood at the scene, the murderer's actions were fierce, and the time spent at the scene was very short. Even if he was injured, he would leave a drop or two. Blood, finding the blood of criminals in so many bloodstains, isn’t it like looking for a needle in a haystack? What’s more, we don’t know if the murderer was injured, and the probability of this is very small.” I didn't argue any more. Based on the current situation, I really can't make a helpful inference for the case. I blamed others for not taking enough materials for on-site inspections out of thin air, and of course Team Xu would not be convinced.It seems that whether useful clues can be found depends on the autopsy below. I took off my gloves, shook hands with Team Xu, then patted Lin Tao on the shoulder, and said, "You guys continue to work hard at the scene. Fayi Zhao and I are going to the funeral home. Let's see the corpse first." After watching that video, and then seeing the corpse on the dissection table, I felt very uncomfortable.The man in front of him was lying quietly on a warm hospital bed in the morning, and lying on the cold dissecting table in the afternoon.There is only a thin line between life and death, and everything happens under the nose, even for forensic doctors are a bit difficult to accept. In order to overcome this psychological barrier and get back to work as soon as possible, we decided to examine the body of the deceased female Cao Jinyu first. Cao Jinyu's injury was very simple. The murderer pierced her pajamas with a knife, forming a black hole in her upper right abdomen. When the body was lifted, the blood in the abdominal cavity was still gurgling out. While Zhao Yong opened the chest and abdomen cavity of the deceased, I carefully separated the neck muscles of the deceased. "The injury is very simple." Forensic doctor Zhao said, "The single-edged stabbing device pierced through the intercostal space, resulting in rupture of the liver and hemoperitoneum..." Forensic doctor Zhao scooped out the blood in the abdominal cavity with a spoon and said, "At least a thousand milliliters. The liver penetrated through, and it should have injured the artery at the hilum of the liver." I didn't say anything. Forensic doctor Zhao said: "What are you looking at? This corpse doesn't seem to have any homework to do, right? The murderer killed him with one stab." I shook my head and said, "I'm afraid it's not that simple." I peeled off the body of the deceased, and flakes of bleeding were suddenly visible in the middle of the neck muscles on the left and right sides.I clamped the deceased's lips with a hemostat, and found a black bleeding area at the junction of the gums and lips. "There were movements of covering the mouth and nose and choking the neck, but the corpse did not show any signs of suffocation. The murderer should have a process of controlling Cao Jinyu." I signaled forensic doctor Zhao to come over to look. "Well," Zhao Forensic Doctor said, "Yang Feng was injured first, and Cao Jinyu came out to call for help. It is normal for the murderer to control Cao Jinyu at this time. It is of no value." I thought about it, and felt that my inference was immature, so I didn't speak any more. Then we inspected the cranial cavity and back of the corpse, and found nothing abnormal. The two of us cooperated with each other to suture the incision, and silently carried Yang Feng's corpse onto the dissection table. Yang Feng was sent directly to the funeral home from the ICU. He was completely naked, which saved him the trouble of undressing. He has a sutured surgical scar on his chest, and some small sutured wounds near the scar. "There is no skin flap in this surgical wound," I said as I unwrapped the surgical sutures, "it means that the wound was left by the doctor, not the original wound. His fatal wound was not on his chest." "But he died of a broken heart." Forensic Zhao said. I took the probe and probed several small wounds in the torso one by one, measuring the depth of the wound in all directions. Suddenly somewhere, the probe sank deep into the wound. I moved the probe carefully and felt the tip of the probe touch the internal organs. "That's right here." I pointed to a wound on the deceased's left quarter rib (usually refers to the lower part of the ribs) and said, "This one pierced into the chest cavity, and the direction is obliquely upward." Forensic doctor Zhao nodded, and I then cut open the chest and abdomen of the deceased along the midline of his chest, exposing the red and white ribs and pink abdominal viscera. "The six wounds on the ribs and armpits of the deceased should have been stabbed by the murderer, and have nothing to do with the surgery," Zhao Forensic Doctor said. I nodded to express my approval: "The shape of the wound is the same, and the angle of the wound is blunt and sharp, which is in line with the characteristics of the wound caused by a single-edged stabbing instrument. The length of the wound is about three centimeters, so the blade width of the murder weapon is also about three centimeters." "The shape of the wound on Cao Jinyu's stomach is the same. It should be formed by the same tool." Zhao Forensic Doctor said, "But this is just nonsense. How can a person bring two tools to kill people, right? Hehe." "This knife is very fast." I did not answer Zhao Fayi's words, and carefully separated each injury, "Six injuries, five did not enter the chest and abdominal cavity." "How dare you say the knife is fast without entering the chest and abdomen?" Forensic Zhao smiled and leaned over to look at every wound I had separated. "This murderer actually has a pretty back." I said, "Look, out of the six wounds, five were directly on the ribs. Into the chest cavity. In fact, it is this knife that works." I picked up the probe and inserted it from the cut in the quarter's rib that I discovered just now, and checked the direction of the probe. Soon the probe entered the chest cavity through the rib, and then extended to the position of the rib. "The reason why I said the knife is fast," I added, "Look, Brother Yong, this fatal knife pierced into the heart from between the two ribs. The rib on the side of the blade is broken, which shows how sharp the knife is. Enough to cut through ribs." "Then why didn't the other several stab wounds break the ribs?" Zhao Fayi asked. "Look carefully," I said, "these knives are not directed in the right direction. They did not exert pressure on the ribs. Only one of them was pinned between the two ribs. Although it did not enter the chest cavity, there was a chipped rib mark." Forensic Doctor Zhao nodded in agreement: "The heart is indeed ruptured. Even with surgery, it is difficult to revive such an injury. Alas, it will be fine if the knife is a little crooked." We didn't talk anymore, we opened Yang Feng's skull and back together, and found no other valuable injuries.Unlike Cao Jinyu, Yang Feng's neck and lips were intact. Silently we sewed, silently carried the body onto the mortuary bed, silently pushed the corpse into the refrigerator.The details of the case flowed through my mind, but it was difficult to piece together a complete picture.After taking off the dissecting suit, Forensic Zhao and I stood side by side in the bathroom, silently washing our hands. "In this case, it seems that the forensic doctor can't help much." Forensic doctor Zhao said first, "The injury is simple. It seems that apart from the cause of death and the instrument of injury, we can't confirm other clues." "The time of death has been determined." I pointed at the foam in my hand, "What we need to solve is the problem described by the criminal, who is he, why did he kill, and what is his current state." "We've basically done everything we can do." Forensic Zhao turned off the tap and said, "Is it a little too much for the rest? It's fine if the inference is right, but if the inference is wrong, the responsibility for failing to solve the case is entirely Turn it over to the forensic doctor." Forensic Zhao told the truth. I shook my head: "Everything is to solve the case, we must do what we can. Even if there are mistakes, even if we will be criticized, we can't stop doing analysis just because of this." "You are the leader of the provincial department." Forensic Zhao shrugged. "It's okay if you say something wrong, so you can say more." After we washed our hands, we boarded the survey vehicle. It was getting dark. Forensic Zhao and the driver discussed where to eat at night.There was so much noise in my head that I couldn't hear what they were saying.The moment the car engine started, I suddenly had a flash of inspiration, and the fog in my mind instantly dissipated completely. I collected myself and said, "Brother Yong, I think through the autopsy, we can at least analyze four very Important issues." This sentence was like a bomb thrown into the water. Their discussion came to an abrupt end. Forensic Zhao turned around suddenly, his eyes lit up, and he asked, "Which four questions?" I smiled, forensic medicine is like this, complaining is complaining, but the urgency to solve the case will not change because of complaining. "First of all," I opened the mineral water bottle in my hand, took a sip, and said, "The murderer's purpose is not to kill, but to take revenge. His original intention is not necessarily to put people to death." Forensic Zhao thought for a while and nodded in agreement: "That's right, although the deceased was stabbed several times, the locations were all in the armpits and ribs, and they didn't go towards important organs. Well, this is very important. It is important and plays a key role in future conviction and sentencing." "This may not be very effective," I said with a smile, "to kill two people at home, and it is estimated that he will not escape the death penalty. I want to analyze the murderer's mentality through the behavior of the murderer, so as to better understand our suspicions. people." Forensic Zhao nodded and looked at me expectantly, waiting for my next analysis. I went on to say, "Second, I think the murderer was holding a knife in his right hand, and his right hand may have been injured." Forensic doctor Zhao has studied in the provincial department for a year, and he is no stranger to this kind of judgment. He nodded and said, "I agree. The injury of the deceased was located on the left abdomen and left armpit, which means that the murderer was right-handed. The knife was in frontal contact with him. If the left hand held the knife could not cause damage in this direction, it is impossible to attack the deceased from behind with the left hand." I added: "Of the six injuries on the corpse, three of them hit the ribs, and two of them broke the ribs. When he is human, his hand will slide forward with force. As I said before, this knife is very sharp, and once the hand holding the knife slips to the edge, it is very likely to be injured." "Well," Zhao Fayi said, "I don't need to explain this, I completely agree with it, so what about the third point?" I cleared my throat, and then said: "The third point, I think the murderer may be an acquaintance of the deceased, or in other words, the parents of the deceased's students." "What?" Forensic Zhao looked shocked, "This involves the direction of investigation. Is there any evidence?" "Brother Yong, don't worry, listen to my analysis first." I smiled and said, "Lin Tao and I have been discussing this issue before. Is it true that Yang Feng was attacked at the door as soon as he opened the door as he said? Was it assaulted, or was it just walking near the couch? That's important, but it's really hard to tell because there's pools and drips of blood in both places." "Then how do you judge?" "Judging from the bloodstain analysis, Yang Feng should have been injured near the sofa." I said, "I carefully observed the shape of the bloodstains, and the bloodstains near the sofa are mainly large drops of blood. , the burrs around the bloodstain are longer, indicating that the dripping position is farther from the ground, that is, the injured part is higher. The dripping bloodstain at the gate has shorter burrs, indicating that the injured part is lower. This is exactly the same as after the injury After the physical strength drops sharply, the center of gravity of the person's body will also move downward, Yang Feng walked out after being injured, and his physical strength was exhausted, so he probably squatted at the door for a while to gather his strength and then ran out to call for help." "You said that, I also thought of something." Forensic Zhao said, "If Yang Feng was stabbed as soon as he opened the door, and Yang Feng was still standing at the gate, he would have yelled, right? Can the neighbors hear you?" I nodded and said, "There is one more crucial piece of evidence." Forensic doctor Zhao stared and waited for me to speak. I took a sip of water like a trick, smiled, and said, "I don't know if you noticed, but the injury on the male deceased has a particularly distinctive feature." Forensic Zhao thought for a while, but he didn't know what I was referring to, so he shook his head. I explained: "Look, there are six wounds on Yang Feng's body, three on the flanks, three on the armpit. They are all on the left side, and the distance between each two wounds does not exceed twenty centimeters. These six Don't you think it's too concentrated on the wound?" "Understood!" Forensic Zhao exclaimed suddenly, "The door to enter the scene is the vast living room. If the murderer stabbed someone with a knife at this time, then Yang Feng would have enough space to hide, and it would be impossible to form a dense It's a wound!" "Yes! That's what it means." I added, "The murderer should have stabbed Yang Feng's upper left abdomen and ribs first, and Yang Feng reflexively dodged with his head in his arms, so that he exposed his left armpit to the murderer." This shows that when the deceased was stabbed, there was no space to hide at all, and he could only protect himself reflexively." Zhao Forensic's eyes shone with excitement: "The large bloodstain on the west side of the sofa is located at the corner between the sofa and the wall. If Yang Feng was stabbed at this location, there would be no room to hide!" "If Yang Feng was stabbed next to the sofa in the living room, and there were no signs of a fight on the floor of the living room, it means that the murderer was someone who could enter Yang Feng's house peacefully. In other words, it was Yang Feng who killed him. The murderer came into the living room." I continued, "In this way, we have to associate this case with the two bottles of Wuliangye on the sofa." "You mean, the murderer came to give gifts?" "Yes," I said resolutely, "normal people would not place these high-end gifts in a conspicuous position in the living room. Yang Feng is a teacher, and he will not destroy his image as a teacher. If he accepts a gift from his parents, The only possibility is that he just received the gift and didn't have time to put it away. In this way, combined with the previous analysis, I now very much suspect that the murderer is the parents of the students who came to Yang Feng's house to give gifts." “我还有个问题。”赵法医看来已经基本同意了我的观点，“如果是家长，那么杨风应该认识啊，那民警询问的时候，他为什么说凶手是个自己不认识的痞子？” 我沉思了一下，说：“这个确实不太好解释，有可能出于两个原因：第一，老师未必能认全学生的家长，所以凶手可能只是自报家门，说自己是某某的家长，就进入了现场，而杨风确实不认识他；第二，杨风在接受询问的时候，不知道自己的老婆死了，也没想到自己会死，所以他为了保护自己的声誉，可能会对这个情节进行隐瞒。” “唉，他这样隐瞒，可就苦了我们公安。”赵法医说，“你说的这些我都同意，那你的第四个推断呢？” “我觉得凶手可能不止一个人。”我说。 “不止一个人？”赵法医说，“怎么可能！死者说了，是个不认识的痞子，说明就只有一个人啊。而且两名死者身上的刀伤都是一种工具形成的，怎么可能会有两个人？” “死者说一个不认识的痞子，指的只是捅他的人，第二个人未必动了手。”我说，“后来死者还说了'黑衣服、白衣服'，是什么意思？我觉得是在描述一个人穿着黑衣服，一个人穿着白衣服。” 赵法医皱起了眉头，这个推断很难让人信服。 我接着说：“我的主要依据是曹金玉身上的损伤。除了右侧腹部的一刀以外，她的颈部和口腔黏膜都有损伤，尤其是颈部，两侧的肌肉都有出血。” “嗯，那说明什么呢？” “两侧颈部肌肉都出血，口腔黏膜还有出血，我觉得一只手是完成不了的，必须要有两只手才能完成上述的损伤。” “哦，”赵法医这才点了点头，“你是说，凶手如果用手同时掐住曹金玉的颈部、按住她的嘴，那么他就没有第三只手拿刀捅人了。” 我笑着点了点头，不得不承认赵法医真是一点就通。“我怀疑是在凶手刺伤杨风的时候，曹金玉从床上惊醒，跑了下来，这个也有依据，曹金玉穿着睡衣，却没有穿鞋，这符合紧急情况下床的表现。曹金玉慌慌忙忙地光着脚下床，跑到卧室门口，看见杨风受伤，就会忍不住叫喊，这个时候另一名凶手就上前捂压她的嘴巴，掐扼她的脖子。一般捂压口部的目的都是防止喊叫嘛。控制住她以后，拿刀的凶手已经刺了杨风六刀，于是过来刺了曹金玉一刀，刺完，两个人迅速离开了现场。” “你的现场重建，听起来还真像那么回事。”赵法医说。 “当然，这只是猜测。”我说，“要确定有两个凶手，还需要更确切的依据。” 车子里又陷入了沉寂。司机缓缓地开着车，我和赵法医咀嚼着刚刚讨论的几点分析，努力想要从中找出新的线索。 赵法医率先打破了沉默，他说：“可是现场勘查提取了几十处血迹，全是杨风和曹金玉的血，包括楼道里的滴落血迹都提取了好几处，也没有发现第三人的血迹啊。” “我倒是有新的想法。”我没直接回答他的问题，“我觉得凶手用的，可能是弹簧刀！” “这个有点儿玄乎吧？”赵法医说，“作为法医，我们只能说是刃宽三厘米左右，长十厘米以上的单刃刀具，不能肯定地说是哪一种刀具啊。” “我有依据啊。”我说，“首先，凶手携带的刀具应该是易于隐藏的，对吧？不然杨风就不可能让他进入客厅了。所以凶手敲门的时候，刀应该是藏着的。大夏天的，衣服上的口袋也不多，既然能把那么长的刀藏住，说明刀必须是可以折叠的。不能折叠的刀，放到口袋里，岂不是会伤到自己？” 赵法医点点头。 我接着说：“第二，这把刀从折叠状态变成伸直状态必须要快。杨风的手臂上没有抵抗伤，说明被攻击的时候是出其不意的，凶手掏刀、把刀刃伸直必须要在杨风来不及反应的情况下完成，一般的折叠水果刀是很难完成的。” 我喝了口水，接着说：“第三，不知道你注意到没有，杨风身上的六处创口，方向都是上锐下钝。也就是说凶手拿刀的时候，刀刃是朝上的，即刀刃是朝虎口部位的，这不符合一般人的拿刀习惯。一般人拿刀，刀刃是朝下的，即刀刃朝四指。如果是弹簧刀，按了按钮，刀刃从刀柄里弹出来，必须是从拇指和四指之间弹出，这样握刀，刀刃就是朝上的。” “有道理！”赵法医说，“被你这么一说，我也认为是弹簧刀的可能性比较大。刚才我问的那个问题，你怎么看？” “别急，我接下来就说这个。”我说，“既然是刀刃朝虎口部位，凶手又有可能受伤，那么他受伤的部位应该就是虎口。虎口位置血管丰富，一旦受伤，必定有较多的出血量，所以凶手的血肯定会遗留在现场。” “可是，现场确实没有找到凶手的血啊。”赵法医说。 “我早就说过，前期提取的血远远不够，因为在现场那么多血迹里发现相对少得多的凶手的血，无异于大海捞针，很难。”我说，“我有个办法。凶手杀完人肯定要逃离现场，现场外，应该会有他的血迹吧。” “是啊。”赵法医说，“外围搜索以搜索物品为主，还真没下大功夫找细小的血迹。” “今天天黑了，条件不好。”我说，“明天一早，我俩就去现场外找血迹。” 吃完饭就没有什么别的事了，我和赵法医信步溜达到公安局，找了台公安内网的电脑打开，想看看协查的情况。如果明天能在现场外找到凶手的血迹，下一步就是将血迹的分析结果录入系统，看看能不能串并上其他的案件，如果能顺藤摸瓜发现凶手的身份，那么案件也就迎刃而解了。 想到这里，我不由自主地又想起了林笑笑。她的死会不会也和别的案件有关联？ 我进入了串并案件系统，在受害者姓名栏里填上了“林笑笑”三个字，刚刚点下“确定”按钮，意外的事情发生了，屏幕上竟然出来了三起其他案件。 “串并了这么多？”我忍不住自言自语道，心中充满疑惑。 算上林笑笑被杀案，这四起案件在系统里已经被命名为“云泰案”。直接用地名来命名，可见当初这案子的确不小。案件的串并，一般都有确定性的证据，但“云泰案”的证据并不完整，依据的是作案的手段和侵害对象的共同点。四起案件的受害人都是正在上中学或大学的女生，施暴的地点也都在公共厕所附近。所有受害者都是俯卧着，双手被捆绑在背后，死于机械性窒息，都有被奸尸的迹象，却找不到精斑。 四起案件中，两起发生在云泰市，一起发生在云泰市所辖的云县，另一起发生在云泰市的邻县龙都县。这个“云泰案”看起来确实不那么简单，发了四起都没有侦破，在命案必破的年代，确实是很少见的。这系列案件究竟是因为什么才陷入了困境？ 正在胡思乱想，赵法医走了过来，问我：“今晚的专案会，咱们参加不参加？” 我说：“不参加了，困了，回去睡觉吧，明天有了发现，再和他们一起说。” A sleepless night. 第二天一早，我就和赵法医来到了现场外的小院里。 “这个小院子的东西两边都有门，西门门口有个小超市，当时也是超市的老板发现杨风冲出楼道倒在地上的，说明凶手应该不是朝西走的。”这个问题我昨晚已经想得很成熟了，“那么凶手肯定是从院子的东门离开的，我们就沿着他逃离的路线找吧。” 有了方向，事情就好办多了。我们动用了先进的寻找血迹的仪器，不出半个小时，就听见赵法医大喊：“看，找到了！” 在凶手离开的路线上，我们找到了七八滴连续的滴落状血迹，非常新鲜，但是离楼房很远。 “为什么血迹这么孤立？”赵法医问。 “我觉得吧，”我说，“可能是凶手离开楼道的时候，捂住了自己的伤口，走到这里的时候，捂住伤口的手松开了，所以伤口会继续往下滴血。不要满足，要继续找。” 果然，用同样的办法，我们在杨风家的楼道里发现了几小滴血迹，这几滴血迹在杨风留下的大滴大滴的血迹旁，虽然不起眼，但还是被我们发现了。 “这个也很可疑。”我说，“提取，赶紧做DNA。” DNA检验很快开始进行，与此同时，我和赵法医仍在坚持不懈地寻找可疑的血迹。夏季的烈日很快烤得我们汗如雨下，但我们一刻也没停，一直找到下午时分，才惋惜地发现，的确再没有其他可疑的血迹了。 但是之前找到的这几滴血的DNA检验结果一出来，还是让我们彻底兴奋了。 这几滴血不属于任何一位死者，而是属于一个陌生的男性。 “永哥，走！”我眉飞色舞地喊道，“我们马上去专案组！” 在专案会上，我把之前通过现场勘查、尸体检验得出的几点推断逐一阐述，并且说明了理由。我信心满满地说完了全部的依据，并没有迎来想象中雷动的掌声，反而是一片冷场。 专案组成员一个个瞪着眼睛看着我，好像彻底被我的推理给绕晕了，似乎有些异议，却又不知道该如何反驳。这诡异的气氛直到DNA室的阮主任冲进了会议室才被打破。 阮主任眉飞色舞地说：“并上了！” 专案组成员的注意力全部被阮主任吸引了过去。许支队急忙问道：“身份清楚吗？” 这就是法医的悲剧。法医累死累活地干一整天，绞尽脑汁地推断，还不如DNA实验室的一次串并。我经常说法医是“我猜我猜我猜猜猜”，其他的刑事技术都是看到仪器出什么结果，就下什么鉴定结论。只有法医和痕检两个专业是要凭着经验和主观认识拼了命地推断、推理、猜测。猜对了还好，一旦猜错了，名声可能就此臭了。很多领导在意的是DNA结果有没有做出来，而对法医辛辛苦苦在现场和尸体上提取DNA检材的过程并不感兴趣。 阮主任很自豪地说：“身份清楚，血是一个叫洪正正的二十二岁男子的。该男子是本地人，长期在外打工，去年因为打架斗殴被处理过，恰巧也取过他的血液样本。” 许支队转头对我说：“秦科长，貌似你的推断错了。” “嗯？”我仍沉浸在那种不公平的情绪当中，被许支队这样一说，更是愤然，“我哪条推断错了？” “你刚才说凶手可能是家长。”许支队眯着眼睛说，“现在看来，凶手才二十二岁，孩子不可能都上六年级了吧？” 侦查员中传来一阵嬉笑。 我脸一阵红一阵白，但是依旧稳住情绪，坚持道：“我说过，我认为本案作案人数应该是两人，这个洪正正只是其中一人，另一人不能排除是学生家长。” 许支队呵呵一笑，并没有接我的话，只是轻声地对侦查员们说：“先去把洪正正抓回来，就什么都搞清楚了。” 我打断了许支队的话：“那，家长不查了？” 许支队说：“查家长的那组人现在终止任务，去抓洪正正。把他抓回来，剩下的事都好办。” 我没有再辩驳，郁闷地和散会的侦查员们一起走出了专案组会议室。 一下午的时间，我都坐在市局法医室里，反复看着电脑上“云泰案”的照片，照片乱糟糟地塞在脑子里，理不出任何头绪。仅凭这几组照片实在没有什么好的办法去破案，更没法去甄别犯罪嫌疑人，可能这也是该系列案件至今没有破获的原因吧。 次日凌晨，宾馆的电话响起，是赵法医打来告知我洪正正已经到案的消息，洪正正右手虎口处确实有伤。现在侦查部门正在对他进行突击审讯。我蒙眬着双眼，“哦”了一声，就挂断了电话继续睡觉。 因为忘记定闹铃，一觉醒来居然已经上午十点了，我急忙洗漱完毕跑去了市局法医室。 “你是不是早上给我打电话说洪正正抓到了？”我不敢确定凌晨接到的电话是真事儿还是梦境，于是问了赵法医一句。 赵法医笑着说：“年轻人就是好，睡眠好才是真的好！是啊，抓到了，不过，到现在一个字也不交代。” “不交代就行了吗？”我说，“我们有证据！” 话还没有说完，我的表情就僵硬了。我仔细地想了想，说：“永哥，不对，我们没证据。” “怎么说？”赵法医一脸惊愕，问道，“楼道里和逃离路线上都有他的血啊！” 我摇了摇头说：“所谓的证据，要有排他性，必须能定死是他杀了人，而不是他到过现场附近。” 赵法医说：“你是说我们现在可以肯定他到过现场的楼道，但是不能肯定他杀了人，是吗？” “是的，”我沮丧地说，“如果是现场房间内提取到他的血，或者在现场外楼道地面提取到他和死者的混合血，都可以确定是他杀了死者。但是只在现场外楼道提取到他一个人的血，就不能确定他杀了人。律师可以说是他到过现场楼道，鼻子流血了。” “那不是强词夺理吗？”赵法医说，“怎么会有这么巧的事情？调查反映洪正正和死者没有任何来往关系，他不可能跑到离他家那么远的现场，还恰巧在现场楼道里流了鼻血！最关键的是，洪正正的右手虎口确实有一处新鲜的刀伤，和我们推断的完全相符，这还能赖得掉吗？” 我耸耸肩膀，说：“律师可以说，洪正正既然和死者没有来往，为什么要杀他呢？” 赵法医愣了半天，问道：“那怎么办？” “现场重建。”我斩钉截铁地说道。 和赵法医回到了中心现场，我们开始模拟凶手和被害人当晚的动作。我让赵法医站在沙发和墙壁的夹角处，我站在他的对面，模拟拿着刀捅他。 我说：“你看，我用这种姿势拿刀捅你，导致自己的虎口受伤，受伤后我会继续拿刀捅你，这时候我手上流出的血迹应该……” 我在自己虎口处滴了几滴水，然后继续挥动手臂模拟捅人的姿势。手上的水滴因为惯性作用被甩落在地面上。 我指着地上的水滴说：“好了，把水滴周围的血迹都提取一份。我之前说过，凶手虎口受伤，那里血管丰富，肯定有不少出血，这些血没有被提取到，是因为现场的血迹太多了，提取到相对少得多的凶手的血就会很难。但用这种办法，我就不信提不到他的血。” “好办法啊。”赵法医说，“这可比大海捞针准确率高多了！” 我们提取了十六份血迹，急送DNA实验室，然后回到专案组静静地等待。 时间缓缓地流逝着，我的心里七上八下，究竟能不能一招制敌呢？ 忐忑的心情很快被化解了，因为DNA实验室传来消息，真的在这十六份血迹中检测出了洪正正的血。 “好！”许支队拍桌子喊道，“这次不怕他不交代了。我要给DNA室记功！” 虽然许支队把功劳给了DNA室，但是我和赵法医并不感到委屈，因为我们追求的并不是那些虚名，我们追求的是那种无法抑制的成就感。我默默地回到了宾馆，睡起了大觉，相信明天一早就会传来洪正正认罪的喜讯。 果然，洪正正在铁的证据面前低头认了罪，他承认自己持刀杀害了杨风夫妇，却一直说不清杀人的动机，而且坚持凶手只有他一个人。 许支队不得已又把我请到了专案组会议室商讨解决的办法。 我问：“洪正正当晚穿的是什么衣服？” “黑色T恤。”侦查员说。 “那我们现在就要去找那个穿白色衣服的人。”我信心十足地说，“洪正正说不清楚杀人的动机，我觉得是因为他根本就没有动机。有动机的人，是他现在正在极力掩护的人。” “看来你判断两人作案的可能性真的很大啊。”许支队对我又恭敬有加了。 “那么下面，我们继续从家长开始查起。”我说。 “主要是分两个组。”我说，“第一组，查洪正正和杨风班上的哪名家长有过来往。第二组，找杨风班上的小学生谈话，找那些比较聪明伶俐的孩子谈，注意，谈话的时候要有老师或者家长在场。另外我有个请求，如果第二组同志发现有什么情况的话，及时告诉我，我想参与谈话。” 许支队点头认可了我的安排，两组侦查员迅速开展工作。 我一直认为第一组会很快查出问题，但是事与愿违。经过半天的工作，第一组侦查员反馈的信息并不多。原来洪正正已经有一年多没有回汀棠了，他在案发当天才刚从外地归来。而且他从来都不用手机，连通话记录都无法查找。 “那就继续查啊！这几十个孩子的家长，有没有谁去过洪正正在外地打工的地点？有没有谁一年前和洪正正有过来往？”许支队在电话里发起了火。 “这需要时间啊。”侦查员在电话那头委屈地说道。 “许支队别急，”我说，“说不准第二组能有什么消息反馈过来呢？” 我的话音刚落，许支队的电话再次响起，第二组真的发现了情况。 当我赶到红旗小学教学楼的时候，一眼就看见了一个十二三岁的小女孩，她怯怯地靠在母亲的怀抱里，正在和一名女民警谈话。我默默地走过去旁听。 “你说，小青是你的好朋友对吗？”女民警问道。 小女孩点了点头。 “那如果小青被欺负，你是不是应该告诉阿姨呢？” 女民警温柔地劝说着，小女孩欲言又止，沉思了一下，问道：“那杨老师会不会知道是我说的？” 看来这个小女孩还不知道他们的老师已经永远都不会知道他们说些什么了。 女民警说：“阿姨向你保证，今天我们的谈话只有你妈妈、你、我和我身后的这位叔叔知道，好不好？” 我暗暗鄙视了一下这位长得非常漂亮的女民警，因为她的这个保证肯定是个谎言。 “漂亮女人的话真是不能信啊。”我心里这样想着，暗自想笑。 可是小女孩看了我一眼后，说：“那也不让这位叔叔知道，行不行？叔叔在这里，我不好意思说。” 我隐隐地觉得我可能猜到了真相，于是知趣地躲到了门外，从光明正大的谈话转为窃听。 “事情，是这样的。”小女孩吞吞吐吐地开始了她的叙述，“前两天，下午自习，小青被杨老师叫去办公室，过了一节课，小青才回来。她坐到我旁边的时候，我就觉得她不太对劲儿，她全身都在发抖，脸色苍白。我问她是不是生病