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Rope of Desire ¡¤ 11

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    "There is a gap of more than 20 kilometers between Liming Village and Aolin Community. The first deceased, Guan Nianqiu, was a bartender. The deceased in this case was a nurse. From a professional perspective, there should be no overlap. The suspect chose the target of the crime.  Why is the span so big?" A Le didn't understand.

    ¡°Before the case is fully investigated, there is no point in blindly guessing.¡± In order to save time, I went back indoors again.

    The fingerprints and shoe prints were exactly the same as the last scene, so I didn¡¯t go through too much trouble. Half an hour later, Brother Ming and Lao Xian walked into the scene one after another.

    ¡°There were strangulation marks on the neck, and no obvious resistance injuries were found on the body surface. Different from the previous case, this time the suspect strangled Chen Xiaofeng to death before committing sexual assault.¡±

    "Brother Ming, judging from the shoe prints, the deceased was in a coma when she entered the door. Did she have any trauma to her head?"

    ¡°There are no obvious external injuries. If it were just bruises, an autopsy would reveal it.¡±

    Because it can be determined that the same suspect committed the crime, many physical evidence (fingerprints, shoe prints) basically do not need to be re-analyzed, which saves a lot of time, and the special project meeting is scheduled to be held on time at 10 o'clock in the evening.

    "Cause of death: mechanical asphyxia. Time of death: around 1 a.m., according to the time, Chen Xiaofeng was killed as soon as he returned home. Judging from the body surface and anatomy, there were no other signs except strangulation marks on the neck.  Trauma. This time, the suspect killed someone first and then raped the corpse. Xiaolong, go on."

    "The shoe prints and fingerprints extracted by the center at the scene are completely consistent with the murder case of Guan Nianqiu. The two cases were committed by the same person. There were obvious signs of turning over at the scene, there was property damage indoors, and the modus operandi was exactly the same as the previous case. According to the indoor  Analysis of the shoe prints shows that the suspect used some method to make the deceased unconscious before he entered the door, and then committed the crime."

    As soon as I finished speaking, Lao Xian took over: "I extracted ethanol, acetaldehyde, acetone and other components from the deceased's mouth and nasal cavity. From this, it can be inferred that the suspect may have used ether."

    "Brother Xian, are you saying that the suspect is carrying ether with a strong anesthetic effect?"

    Lao Xian nodded: "In the first case, the deceased was a bartender, and the discovery of ethanol in her mouth did not attract my attention. But this case is different. The deceased was a nurse, and she had just come off the operating table. She definitely did not  I know how to drink, so I was more cautious, and finally I discovered a very small amount of acetaldehyde and acetone. In addition to water, these three substances, ethanol, acetaldehyde, and acetone, are exactly the components of ether.  Based on what Xiaolong said, it is very likely that the suspect used ether to anesthetize the victim."

    "I seem to have seen it on TV, saying that ether can make women faint within a few seconds." A Le interjected.

    "It's definitely alarmist. Ether does not have such a strong anesthetic effect." Lao Xian continued to popularize science. "In terms of production technology, ether can be produced by mixing ethanol with concentrated sulfuric acid and heating it to 130 to 140 degrees Celsius. Its physical properties are  It is extremely volatile. Unless it is inhaled excessively, it will only have an anesthetic effect on people in a short period of time. It is almost impossible to directly anesthetize people until they lose consciousness like on TV."

    "This also just explains why the suspect chose to commit murder and rape the corpse in the second case." My words attracted everyone's attention, "I guess the suspect may have had the same idea as Ale beforehand.  It is believed that ether can make the victim faint under anesthesia, but who would have thought that during the sexual assault, Guan Nianqiu, the victim in the first case, suddenly woke up. If the suspect had not tied a rope around his neck in advance, Guan Nianqiu's resistance would have been absolutely impossible.  It would wake up the surrounding neighbors, and in order to avoid this happening the second time he committed the crime, the suspect chose to kill the victim directly before sexually assaulting him."

    "The inference is reasonable." Lao Xian nodded repeatedly.

    "What's the situation with other biological testing materials?" Ming Ge continued to ask.

    "It's still semen spots and saliva that can make the same determination as Guan Nianqiu's murder case. There are only so many for the time being."

    "Jiao Lei, what's going on in the video?"

    Fat Lei scratched his head: "I originally wanted to compare the videos from Liming Village and this case to see if anyone with the same physical characteristics appeared in the videos after the incident, but unfortunately, Olin Community  There are too few surveillance cameras, and the surveillance equipment on the road where the deceased Chen Xiaofeng got off work is still broken, so this method is simply not feasible. Although we currently have key trace evidence, the description of the suspect's physical characteristics is too unclear.  From the surveillance video, there is no way to start." Pang Lei talked about the current predicament.

      "Okay!" Brother Ming did not waste time, "The criminal police team has clearly investigated the relationship network of the deceased. There is no intersection between Chen Xiaofeng in this case and Guan Nianqiu in the previous case. In other words, the suspect  The target of the crime was chosen randomly, and the subjective purpose was sexual assault, accompanied by an escalation of violence."

    "The method of committing the crime has just been mentioned by Xiaolong. The suspect squatted in front of the deceased's rented residence, then used ether to anesthetize the victim before committing the crime.

    ¡°After the motive and method of committing the crime are clear, we will analyze the target of the crime targeted by the suspect.¡±

    Brother Ming flipped forward two pages of the notebook in his hand and continued: "Both Guan Nianqiu and Chen Xiaofeng are women who live alone, and the houses they rent are all open-plan self-built buildings. This kind of building has a high turnover of people, and it is basically impossible to live alone."  There is no security. Now that the suspect has not been arrested, he will most likely continue to commit crimes. Young women living alone in urban villages may be listed as targets."

    ¡°But there are dozens of urban villages, large and small, in the city, and there are even more young women renting alone. How do we know who the suspect¡¯s next target will be?¡±

    ¡°Currently, we can only release early warning information through the media to warn the suspects, so as to gain more time to handle the case.¡±

    "Little dragon."

    "Brother Ming, tell me."

    ¡°You can study the nail shoe marks left at the scene and see if you can make a breakthrough.¡±

    "OK, no problem."

    "Jiao Lei."

    "exist."

    "Try to extend the videos of the two cases to the extreme. The suspect may have visited the spot more than once before choosing the target of the crime. Carefully observe the videos around the scene for a month to see if anyone appeared multiple times in the early morning.  On the surveillance screen.¡±

    "Received." (Remember the website address: www.hlnovel.com
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