Regarding the 1213 extra-large murderer case, there have been a lot of details disclosed on the Internet, Xu Qingsheng browsed some information, she felt very surprised: "Even in my world, the details of the cases that the police have not solved will not be disclosed so clearly, but why in this world, there are already these real information on the Internet?" Aren't the police worried about someone copying the crime? ”

Shen Jiamu was drinking coffee again, as if he didn't pay much attention to what Qing Sheng was saying, and when Qing Sheng almost thought that he was deaf and was hesitating whether to repeat the question, Shen Jiamu said: "Tell me what serial murders happened in your world." ”

There are no positive answers to the questions.

"I don't see much reports of serial murders, and I have paid attention to such a case in recent years, because the victims are all women who live alone, and it happens that I also live alone, so when the first murder happened, I searched a lot of media reports to see, the victims were attacked by the murderer when they went home and opened the door, the murder weapon should be a dagger or other sharp weapon, the victim was attacked, and the murderer also forbade them to call for help to alarm the neighbors, and took the victim into the house and brutally killed."

"Look, don't you also know the murderer's modus operandi, and even the murder weapon?"

"That's because every case happens, it is the next morning, the neighbor who lived in the same building as the deceased witnessed the blood stains on the ground before reporting to the police, the media can also guess that the deceased was attacked when opening the door, and such murders happened one after another, the police are also to remind the public to pay attention to some of the details that were revealed, as for the deceased was held hostage into the room, what the murderer carried out has not been disclosed, unlike the 1213 murder case, what the murderer said, and the details of the mask on the deceased were actually posted on the Internet."

"That's because there are survivors of the 1213 murder." Shen Jiamu said: "Survivors have been hearing about the crime process at the scene of the murder, and the murder has not been solved, the survivors are inevitably worried and anxious, the media targeted interviews, the constitution also gives the public the right to know, the police have no right to ask the survivors to shut up." ”

Xu Qingsheng was silent, which is more important, the right to know or the right to life, and even the limitation of the scope of human rights, these issues are too complicated, and she can't tell whether it is right or wrong and whether it is reasonable, maybe no matter what measures are taken, it will not be perfect to satisfy everyone.

She quickly thought of another puzzle: "Officer Shen said last time that the murderer used the deceased's vehicle to commit the crime, could it be that the murderer can still buy a master car key through the dark web?" ”

"There is no such thing as a master key, but almost no one will carry a physical car key with them, they all use mobile phones and other electronic devices to download virtual car keys and use virtual car keys to unlock the lock."

"That is, as long as the murderer gets the deceased's mobile phone, he can use the deceased's car? This...... It's too unsafe, isn't it? ”

"In fact, there are very few cases of vehicle theft in our country, because the vehicle is not very valuable, and even if it is stolen, as long as the police can locate and track, the criminal wants to destroy the locator unless the entire car is destroyed, who will commit a crime without interest? Therefore, although the door lock of the vehicle can also be set with a key, and the police have repeatedly reminded citizens to be careful to prevent crime, there are still many people who want to abandon the car key for convenience. ”

Shen Jiamu thought for a while and then added: "This is also because if the car is keyed, the mandatory safety measures will be turned on at the same time, if there is really an accident, such as the road is blocked, the mandatory safety measures will be activated, and the people in the car will be trapped and must wait for rescue." ”

Xu Qingsheng: ......

"Even mobile phones, because they are generally not lost, many people only set the key to connect to the brainwaves, and few people set the lock screen key in one more move, because the key of the same electronic device cannot be the same, and the owner of the key is likely to be confused, so you have to send the supplier to unlock, although the procedure is not too troublesome, but the vast majority of people think that more is better than less."

Technology is advancing, but many people's brains seem to have "shrunk" because of the convenience brought by scientific and technological progress?

But Xu Qingsheng suddenly thought of himself.

Because there is no privacy in her mobile phone, she is too lazy to lock the screen, the bank account associated with the mobile phone in this world must use brain waves when paying, and brain waves must be fingerprinted to connect to the mobile phone - like the mobile phone she is using now, Shen Jiamu also opened a brain wave connection account for her after entering her fingerprints, otherwise she would not be able to use Shen Jiamu's mobile phone directly as an unidentified person.

Normal people do not have the perception that they will be the target of a psychopathic killer, which creates convenience for the murderer's criminal behavior.

"Actually, I've always suspected the murderer's motive for asking the victim to call the police." Shen Jiamu closed his eyes and half-tilted his head: "He used the victim's mobile phone to open the car door, started the autopilot program, and transferred the unconscious victim from the location of the attack to the place of murder, the location of the murder was carefully selected by him and could not be covered by the camera, and then he re-set the target place and let the victim's vehicle drive away from the place of murder."

His actions were done in order to erase his trace, which was justified from the point of view of criminal acts. Because when the police found the location of the vehicle, found the vehicle involved, and found the murder scene according to the clues provided by the vehicle's autopilot program, he had already committed the crime and successfully escaped, and the police only had time to rescue the survivor.

But he insisted on leaving the victim's mobile phone at the scene, and let the victim call the police for help, and then turn on the location blocker to prevent the police from tracking the mobile phone location to find the scene of the murder, which is an overkill and unreasonable. ”

"Or is it the murderer who deliberately provoked the police to get criminal satisfaction?" Xu Qingsheng proposed a possibility.

"From the perspective of criminal psychology, there are indeed cases where the police are provoked, first giving the deceased a glimmer of life, and then cruelly depriving the deceased of life, using this to torture the deceased to achieve a sense of criminal excitement...... But in fact, there is also a possibility, that is, he deliberately left a criminal symbol, he was to mislead the police, although he selected the deceased in a targeted manner, but he and the deceased did not have direct hatred, he just hated the deceased's derailment.

Because it's not just the phone, he also leaves survivors, and if the killer is one of the survivors, then all his actions seem more reasonable. ”

Xu Qingsheng didn't realize that this was Shen Jiamu's whim, and she guessed that such a judgment might have existed long before Shen Jiamu received Kong Chunzhen's email.

Sure enough, I heard Shen Jiamu say: "I have mentioned this idea a long time ago at the case discussion meeting, but it was not adopted, and now my idea is just suspicion, heh, I don't have the right to investigate at all, how can I get evidence to support it?" ”

"That team leader Ma, is there any suspicion of collusion with the murderer?" Qingsheng asked again.

Shen Jiamu shook his head: "It won't be him, he is too conceited, and he is narrow-minded, I don't agree with Zhang Jie's suspicion of the police." ”

"Isn't there a survivor who is a detective?"

"He was a survivor of the second murder case, when the 1213 case had been transferred to the Special Bureau, he was not on leave, he was temporarily placed on a long vacation, because he made a mistake in the process of solving another case, accidentally injured a citizen, during that time his psychological condition also fluctuated greatly, so he was forced to take a vacation to recuperate, he and his wife went out on vacation, the temporary place of residence was very remote, his wife was killed, and he also lost his freedom of movement at that time."

"It sounds like this detective is indeed suspicious."

"He's not a detective anymore." Shen Jiamu said: "After the incident, his psychological condition was even worse, and he took the initiative to resign, but he has been living with his parents, because his father is not in good health, and he has been taking care of his father at home. ”

"There's actually a detective agency?"

"There are a lot, but they are strictly forbidden to invade the privacy of others, the vast majority of detective agencies are actually employed by commercial companies, responsible for investigating all kinds of business cooperation cases through legal procedures, whether the other party has fraud and concealment, etc., but of course, there are also detective agencies secretly carrying out illegal activities, accepting commissions, using eavesdropping, secretly photographing, tracking and other means to investigate the private life of the target."

"For example...... Investigate whether the client's spouse has cheated? ”

Shen Jiamu nodded: "But none of the survivors of the 1213 case have entrusted private detectives to carry out such an act." ”

"It may also be concealed because it is illegal."

"There is also a common feature of these cases, that is, although the deceased has cheated on him, the relationship between the husband and wife with the survivor has not broken down, even if a consensus on divorce has been reached, but there is no sharp irreconcilable contradiction.

It seems to be the same thing.

Xu Qingsheng has no clue for the time being.

"From the analysis of criminal psychology, if the murderer is the survivor of the second case, the former police officer Sun Ping'an, he is unlikely to choose the detective profession after resigning, because this will obviously make him suspicious, the murderer of the 1213 case acted very cautiously, although he did have some kind of psychological problem, or to be precise, it should be called a disease, but he would definitely not be exposed, I think he should be no different from ordinary people on the surface, he even has a cheerful and open-minded personality, and did not leave a medical record in any psychological treatment institution, He doesn't even live alone.

He should have a certain amount of freedom in his work, he is unlikely to have suffered childhood trauma, but he has a good family, he has a higher education, and he may not be in the electronics industry, but he has a wide range of interests, and he should have taken such courses in school, at least he knows how to enter the dark web and buy tools for crime.

But I can't confirm my speculation, so the only way I can think of it now is to contact and talk to all the survivors first, at least we should know that there is anyone other than Kong Chunzhen who knows that Zhang Jie is secretly investigating the survivors. Ms. Xu, this matter is very important, our opponent this time is very cunning, all our temptations must be careful, and we must not let the murderer realize that Zhang Jie is a threat to him. ”

Xu Qingsheng nodded hurriedly: "I will close my mouth and only have my ears." ”

"No, it's the opposite, and this time you're going to have to take on the main role of inquiry." Shen Jiamu's expression became more serious: "That's why I'm not in a hurry to talk to the rest of the survivors today, we need to think about it in the long run." ”