The second deceased, Wu Xiaoxi, had two wounds, one on the top of his head and one on the occipital region.

Blood flowed down her smooth neck all the way to her back, and the blood had dried up completely, clinging to her skin, forming several shocking scabs of blood.

Zhou Xiaoyi also followed Jiang Xiran to the dissection table and said seriously; "Deceased No. 2, like deceased No. 1, did not find any obvious trauma on the surface of the body, but a subcutaneous hemorrhage was found on the forehead."

Jiang Xiran frowned suddenly, leaned over, and reached out to gently touch the wound on the deceased's forehead: "It should be a kind of impact injury, when the occipital part is hit, the impact in the opposite direction causes a cortical contusion." It can be seen that the occipital window is indeed a prone blow performed by the deceased after he fell to the ground, and the forehead padded the ground. ”

After speaking, Jiang Xiran carefully examined the two wounds on Wu Xiaoxi's head, which were almost the same as Wu Changhai's wounds.

Through video dialogue devices, another autopsy room was reported from the autopsy of the forensic doctor of the provincial department.

After a while, Lu Ke pushed the door and walked in quickly, and asked directly, "Can the murder weapon be determined?" ”

At this moment, Jiang Xiran and Zhou Xiaoyi were holding a skull chisel and a bone saw to open the skull.

The comminuted fracture of the skull, which was more serious, forced the two to give up the chainsaw. While manually opening the skull with a bone saw, remove the broken skull with forceps.

This scene happened to be seen by Lu Ke.

As a criminal policeman, he often participates in the detection of various homicide cases, although there are many corpses, but this kind of craniotomy scene is still relatively rare. In particular, in this case, the deceased's head injury was very serious, the brain tissue was shattered, the skull was full of hemorrhage and hematoma, and the meninges were severely torn.

Lu Ke slowed down, slowly walked to the dissection table, looked at the scene in front of him, and swallowed hard: "It's too miserable......"

Jiang Xiran gently picked up a piece of skull on the edge of the wound and showed it to Lu Ke, and Bai Sensen's appearance brought a strong visual impact to Lu Ke.

"The edge of the wound is very uneven, the skull fractures of several corpses are irregularly round, and there are many shedding due to inertial and comminuted fractures, and the murderer's murder weapon is a very hard metal blunt weapon, which can cause such serious fracture marks, in addition to the murderer's greater strength, the quality of the murder weapon must also be very heavy."

Jiang Xiran pointed to the wound of the skull and told Lu Ke about his analysis, but he didn't get a response from Lu Ke for a long time.

"What's wrong? Is it lamenting the violence of the murderer, or lamenting the tragic experience of the deceased? ”

Jiang Xiran looked at Lu Ke's somewhat distracted expression and asked him a little puzzled.

Lu Ke came back to his senses, shook his head slowly, and whispered, "This kind of wound, that three-year-old kid...... There should be no pain......"

Jiang Xiran didn't seem to expect Lu Ke to suddenly say this, because he had never been in such a situation. Jiang Xiran was also a little stunned for a while, and then, she comforted lightly: "The only thing we can do is to catch the murderer." ”

Lu Ke nodded, looked at Jiang Xiran, and his gaze fell on the skull in her hand again: "You mean that the murderer's killing tool is a hard, heavy, and blunt metal weapon?" ”

Jiang Xiran added: "And it's round." ”

In the next second, the two looked at each other and said in unison: "It should be a hammer." ”

After the two finished speaking, they subconsciously avoided their gazes and landed on the corpse in front of them.

"In other words, the murderer took a hammer and broke into the house to kill people, and killed four people in a row......" Lu Ke said in a deep voice.

Jiang Xiran nodded.

Lu Ke suddenly frowned slightly, and analyzed seriously: "Although it is not unusual in terms of killing methods, after all, hammers are not like daggers and other murder weapons, and they have relatively high lethality. Once the hammer is not critically injured, or not fatal, it is extremely easy for the victim to resist. You must know that in the case of dying and surviving, the potential of people is unlimited. ”

Jiang Xiran continued along with Lu Ke's words: "That's right, in the case of survival, adrenaline will be discharged into the bloodstream, causing the body's blood pressure and heart rate to increase, expanding the air passage to the lungs, maximizing the output of energy, and there will be a high explosive force that is not usually available at all. In war, the two armies were close to each other, and some people had already been hit by bullets, but they did not feel the pain, and continued to charge and kill the enemy. ”

Lu Ke thought for a while, and then said: "And compared with a dagger, it is easy to reach out to resist defense, once you reach out against the hammer, not only will the hand not be hurt like a dagger, but the other party will immediately counterattack." ”

Jiang Xiran also gave the conclusion of the autopsy to Lu Ke's analysis: "But from the perspective of time, none of the four deceased were found to be injured. ”

Lu Ke frowned suddenly, and asked her seriously: "Not at all." ”

Jiang Xiran replied in a deep voice, "No, let alone fractures, I didn't even find a bruise." ”

Lu Ke fell into deep thought and muttered, "This is a little strange, could it be that the four dead people had no ability to resist at that time?" ”

Jiang Xiran replied: "The blood test takes time, but the four deceased did not have restraint injuries on their bodies, which means that the murderer did not tie them up." And judging from the location of the wound, it is a head-on blow, and if there is no resistance, there should be an executing trauma, and on the opposite side of the wound, there will also be a concussion injury. ”

After listening to Jiang Xiran's words, Lu Ke's tone became firm, and he said: "It shows that the murderer attacked the deceased when he was defenseless, and the murderer is definitely someone who the deceased's family knows, and he is very familiar with it, and he is a person who will never be guarded." It's not a relative, it's a close friend. ”

Jiang Xiran added: "Anyway, using a hammer as a murder weapon to kill four people in a row is somewhat abnormal. ”

Between the two of them asking and answering, Zhou Xiaoyi had already dissected the neck, chest and abdominal cavity of the deceased in accordance with the routine autopsy process, and no abnormalities were found.

At this time, Zhou Xiaoyi was extracting the deceased's gastric dissolutes, blood samples and routine biological samples.

"Section Chief Jiang, judging by the dissolution in the stomach, the time of death should be about three hours after the meal." Zhou Xiaoyi said seriously.

Jiang Xiran thought for a while: "Under normal circumstances, dinner should be eaten around five o'clock to six o'clock, then the time of death should be around nine o'clock in the evening. This is not much different from the auxiliary judgment of corpse morture and corpse temperature. ”

After speaking, she said lightly: "The life and rest of the rich are regular......

After hearing this, Lu Ke continued to think about the case, he kept twisting his fingers, and said in a deep voice: "Acquaintances who can still enter Wu Changhai at nine o'clock in the evening...... Kindred? Neighbor? Have an important business partner? ”