The autopsy and trace examination are not completely over, but all the clues that can be obtained have been obtained.

Except for the murder tools used by the murderer, which made people feel a little surprised, the others are basically the same as those analyzed by Lu Ke and others at the scene.

The murderer entered Wu Changhai's house at nine o'clock last night and killed Wu Changhai's family of four with a hammer he carried with him, and only the eldest son-in-law Bian Yongshun and the youngest daughter Wu Xiaodong survived.

But it is this that makes everyone feel a little strange, there is such a big thing at home, but the two people disappeared at the same time, and the police tried to get in touch with the two of them through various methods, but so far, there is still no contact.

At the request of the Provincial Public Security Department, the Jing'an City Public Security Bureau dispatched elite police forces to various sub-bureaus in the city, and set up a special case group with the criminal investigation detachment of the city bureau as the backbone.

The city bureau temporarily changed the conference room into the office of the task force for the police officers of the task force.

Before I knew it, seven hours had passed, and the autopsies on the four bodies had finally been completed.

The forensic doctors finally ushered in a short break at five o'clock in the afternoon, and after a busy day, let alone lunch, everyone didn't even drink a sip of water.

"It's hard, it's hard."

Lu Ke walked quickly into the conference room and greeted the two forensic doctors who came to support him from the provincial department.

Jiang Xiran's face was a little not very good, there was no trace of blood, and his tone was a little weak, and he introduced: "These two are Qin Forensic Doctor and Han Forensic Doctor from the Forensic Identification Center of the Provincial Department. ”

After Lu Ke shook hands with the two of them one by one, he hurriedly said: "Thank you for the support of the forensic doctor of the provincial department, the case is urgent, the hospitality is not good, the two of you haven't had lunch yet, I'll take the two of you to eat later, it's opposite, home-cooked." ”

Doctor Han smiled: "Captain Lu is polite, let's go to the cafeteria for a bite in a while, and eat lunch and dinner together." ”

Forensic Doctor Qin also smiled and said seriously: "Don't be in a hurry to eat, let's talk about the autopsy first." ”

Jiang Xiran and Zhou Xiaoyi nodded and sat down one after another.

Doctor Han saw that Jiang Xiran was a little unwell, and said slightly apologetically: "It seems that we should all go back to the furnace to exercise, if we don't do dissection for a long time, our hands are a little raw, and we have been delayed for some time." ”

The forensic doctors of the Provincial Public Security Department are mainly responsible for investigating some difficult homicide scenes, and usually do more identification work. The forensic doctor of the city bureau is not only responsible for a large number of homicide autopsies, but also responsible for some autopsies of unnatural deaths and issuing certificates of the cause of death. The workload is large, and the autopsy operation is naturally more skillful.

Jiang Xiran was a little dizzy with low blood sugar, sat on the chair, and tried to show a smile as an answer.

Forensic Doctor Qin cleared his throat and said solemnly: "Then let's hurry up, make a long story short, and let Forensic Doctor Jiang go back to rest." ”

Lu Ke nodded and sat across from the conference table.

After a while, Ling Zizhen also walked into the conference room.

"Forensic Dr. Jiang and I have been in communication during the autopsy, including after the autopsy. The injuries of the four victims in this homicide are basically the same, all of which were severe head injuries caused by violent blows to the head with a blunt metal object. Judging from the distribution of the striking positions, the height of the murderer should be relatively high. ”

The forensic doctor Han next to him took over and said: "Among the four deceased, Wu Changhai's height is the highest, at about 1.75 meters, the murderer can hit the top of the deceased's head, which means that the murderer should be very tall." ”

Lu Ke thought for a while, and suddenly asked, "Could it be the murderer standing and the deceased sitting on a chair?" ”

Forensic doctor Qin added: "We have also considered this point, but from the perspective of the direction of the fracture line and the blow, at the time of the crime, the murderer and the deceased should have stood face to face, and the murderer used a hammer to hit him head-on." ”

Jiang Xiran also nodded, and said weakly: "That's right, according to the location of the body at the scene of the crime, it does not meet the situation of being killed on the sofa." ”

When Lu Ke heard this, he said in a deep voice: "Standing face to face and being killed, there must have been a fierce verbal quarrel at that time. ”

At this moment, Ling Zizhen also gave a conclusion based on the results of his trace examination: "Judging from the distribution of bloody footprints and stride length at the scene of the crime, the height of the murderer should be about one meter eighty-five. ”

Zhou Xiaoyi raised his head and whispered: "One meter eight five, not short, you can check according to this height clue." ”

Ling Zizhen nodded at Zhou Xiaoyi: "Reality is not a romance drama, not all male characters are rich and handsome at one meter eight, plus the difference between the bones of the north and the south, and the difference in physical fitness in reality, the height of one meter eight five is still more typical." ”

At this moment, Forensic Doctor Qin suddenly said with some seriousness: "This case of destroying the door is very similar to the one I participated in the investigation of many years ago, the same killing of the door, the same hammer hitting the head, and even the same tall murderer. ”

Lu Ke hurriedly asked him: "Is the case also the same?" ”

This issue is very critical, in today's information age, in the face of major criminal cases, it is impossible to completely block the case information, whether it is an official report or some self-media dissemination, the case information is almost completely public.

If it is seen by some interested people, it is very likely that there will be a situation of imitation of the crime.

But Forensic Doctor Qin shook his head slightly: "It was a case of robbery and murder, the murderer rummaged around the room after the murder, and even opened the refrigerator. ”

Hearing this, Ling Zizhen showed a surprised expression, and subconsciously raised his voice: "This case has also been rummaged!" ”

Forensic Doctor Qin was still calm and expressionless: "I heard Forensic Doctor Jiang say that although there was also rummaging in this case, the property of the four deceased was not lost. ”

Lu Ke frowned and said: "Yes, Wu Changhai is the richest man in Jing'an, and his family background naturally goes without saying, the gold and silver jewelry on his body, especially the valuable gold watch on Wu Changhai's wrist, has not been stolen, which is indeed very abnormal." ”

Forensic Doctor Qin thought for a moment and looked at Lu Ke thoughtfully: "Could it be an imitation crime?" ”

Immediately afterwards, Forensic Doctor Qin denied himself again: "In a case like this, the murderer and the deceased must have a very big hatred, and the possibility of vendetta is very large, precisely because of the nature of this case, the probability of imitating the crime will be much smaller." Especially in this case, killing people for revenge is much more likely than killing people for money. ”

Lu Ke settled down and continued to ask him: "Can Forensic Doctor Qin give some analysis of the case?" ”

Forensic Doctor Qin thought for a while and said seriously: "This case is committed by an acquaintance, the scope will not be very large, and the murderer and the four deceased all know each other, so there is no fight and resistance." If it was really a business feud, it would be impossible for the murderer to know the deceased's family of four. I suggest that the investigation should start with the relatives of the deceased's family, and gradually expand the investigation of the close relationship, and there will definitely be clues. ”