Criminal Investigation Notes

In the early morning of the next day, three wooden boxes of different sizes were placed side by side on the transparent glass observation platform in the material inspection room of the Huadu Police Station.

This was found by the Chen Yang Branch in Huadu after an all-night search yesterday.

Those abandoned cars in the city are placed on the side of the road, and countless people pass by every day, but no one would have thought that there is such a terrible thing hidden inside.

Lu Junchi brought Qiao Ze to the Biology Center today. As soon as they entered, a young female forensic doctor stood up and handed them gloves, masks and goggles.

This material inspection room is airtight and somewhat dark, with strong ventilation devices inside. The lighting is all based on various lights, large and small. Different lights have different functions and can illuminate different traces.

Lu Junchi put on his equipment and leaned over to see.

The boxes were marked No. [-], No. [-], and No. [-] according to the storage time, and the first box they found was No. [-].

The other two boxes seemed to be in the same situation. There was white powder inside, and some women's residual limbs were buried respectively.

The box number one is the largest, and inside it is a foot that reaches to the knee.In box number two are those hands, and box number three is another woman's hand.

Three hands, all of which were young women's hands, plus a foot, which means that there were at least two victims, possibly three.

The situation at hand is really tricky.

Qiao Ze stood by and watched for a while, then took out his notebook and prepared to record it.

Xing Jing of the Material Appraisal Center is a female forensic doctor, and just hearing her name is enough to be a criminal police officer.

Xing Jing had a pair of phoenix eyes, combed a high ponytail, and wore a white overalls. She introduced them to the side: "We have inspected the three boxes, and there is no complete fingerprint of the murderer. Things, we have also tested it. The DNA is not the same, so there should be three victims, and the hands in the third box are still very fresh, and the victim was killed not long ago."

Lu Junchi looked at it for a while, straightened up and folded his arms and asked, "What are those white powders?"

The three boxes seemed to contain antiseptic potions, but he didn't know what they were. The wooden boxes seemed to be available in the market, and those potions were also one of the directions of investigation.

Xing Jing simply explained: "It's a mixture of camphor, alum, and boric acid."

Qiao Ze held the cap of his pen in his mouth and said vaguely: "Sister Jing, please explain clearly, I will write it down..."

Xing Jing handed him a report and said: "The report is clearly written, including the specific content, so I really don't need to remember it."

Qiao Ze flipped through the report and put on an inquisitive expression: "I'm curious, what are the effects of these medicines? Why don't those residual limbs rot if they are put in there?"

Xing Jing then explained: "Among them, camphor is used to remove odors and maggots, alum absorbs oil, inhibits bacteria and coagulates proteins, and boric acid is used for antisepsis."

Lu Junchi grasped the key point and asked, "Is this a common formula?"

Xing Jing nodded: "This is a chemical ratio for specimen preservation, but it is not as popular as formalin, and it is not as effective as the mixed preservative of arsenic trioxide. But this method is safer and it is easier to obtain raw materials. Most people use it at home. Can be prepared."

Lu Junchi pressed the center of his eyebrows, it is easy to buy and match, that is to say, it is difficult to trace the murderer through the drug channel.

Xing Jing pointed to the box in front of her again, "From the ratio of these three boxes, we can see that it is not a one-time combination. The murderer is evolving and becoming more and more proficient. He has been adjusting the formula. You guys It can also be seen that there are still some signs of corrosion on the original first hand, but the new one is very well preserved."

Lu Junchi asked again: "Aside from storing medicines, what information can we get?"

"Director Shang has gone to the field." Xing Jing brought another inspection report, "He has personally seen it before, and he has studied fingerprints, DNA, blood type, and the way the wound is formed. The tool is suspected to be a sharp chainsaw. The victims were all women around 25 years old. Director Shang also said..."

Xing Jing pursed her lips when she said this, and looked at Lu Junchi with her beautiful phoenix eyes, "He said that the victim's blood contained a certain amount of animal anesthetic ingredients, which had life reactions, and these limbs may have been sawed off when the victim was alive. Yes, after fixing the victims, the murderer cut off their hands and feet, processed them, and finally embalmed them. Also, the dose of anesthesia was not large, and he suspected that the victims were in a semi-conscious state."

Such a murderer is too cruel.

Lu Junchi asked again: "After the limbs are cut off, is there any possibility for the victim to survive?"

Xing Jing shook her head: "Such a large wound will cause severe blood loss and wound infection. Even if you go to a professional hospital, you may not be able to save it. Therefore, it can basically be determined that the victim has died."

After hearing his words, a strange scene appeared in Lu Junchi's mind. In a dark room, in front of a simple platform bed, a man wearing a raincoat with a gloomy face saw off the hands of the woman lying in front of him almost at the wrist level. The house was filled with the buzzing of chainsaws, and the woman's feeble cries of pain. She uttered a slight cry for help, but no one answered...

Qiao Ze was recording on the side. After hearing this, a trace of fear flashed in his eyes, and his teeth chattered involuntarily.

Lu Junchi turned around and asked Qiao Ze, "Have you compared your fingerprints and blood types?"

Qiao Ze said: "I ran through the information database all night when I sent it last night, but I couldn't find it in the library." That is to say, the fingerprints and blood types have not been entered into their system.

After Xing Jing finished his introduction, he handed various inspection reports and a stack of photos to Lu Junchi: "Captain Lu, that's all the information we can provide. Others, do you think there is anything else that needs to be checked?"

Lu Jun hesitated for a moment and said, "I would like to apply for an investigation of the microscopic matter in the crevices of the fingernails, to see if it can help us determine the occupation of the deceased."

They can only determine the approximate time when the victim cut off his hand, and they know too little information to confirm the identity of the deceased.

Without knowing the dead, it is impossible to find out how the murderer chose the victim and the motive for killing.

"Micromatter?!" Xing Jing looked at Lu Junchi with a smile on her lips, "This is a method that Team Lu said. There is indeed a lot of information hidden in people's fingers, which cannot be washed away by repeated washing. I Knowing this technology, it seems that the specific method is to perform spectral calculations and obtain information through the results, but we can’t do this here now, and need to send it to the laboratory of Huadu Police Academy.”

After speaking, Xing Jing took out a sticky note and wrote down: "Let me make a note first. When Director Shang comes back to discuss with him, I will tell you as soon as I have news. I just want to trouble Team Lu to wait."

Lu Junchi nodded, expressing his understanding.

The Physical Forensics Center of Huadu Headquarters has a heavy workload. They are not only responsible for various tests of various criminal police teams, but sometimes they also cooperate with the inspection and testing of some sub-bureaus. Various tests and analyzes take time.

Those trace inspectors, experimenters and forensic doctors can't wait to live in the object identification center every day.

For all the data of the serious crime team, here is the top priority, so the results can be obtained so quickly.

The work here was almost finished, Lu Junchi and Qiao Ze walked out.

The building of the Huadu General Administration is very modern, especially the material identification center. The first floor is the storage center, the second floor is the forensic department, and the third floor is the physical evidence laboratory. Floor-to-ceiling windows, through the glass, you can see the scenery outside.

Now in midsummer, looking around, there is a lush green.

Lu Jun took a few steps and turned around, holding the documents in his hand, he asked Qiao Ze, "What do you think about this case?"

Qiao Ze put his hands on his hips and said bluntly: "This murderer is a pervert! But he is too cunning and sophisticated. We have investigated so much, but we know nothing about this murderer."

"It's not ignorant, the murderer should be a man, acting alone." Lu Junchi deduced in a low voice, "The murderer has channels to buy chemicals and medicines, and has certain relevant knowledge. His education should not be too low. His job There should be plenty of time at your disposal, with an independent office space and a place for dismemberment..."

Lu Junchi paused at this point, and said softly, "But why did the murderer put those stumps in the car?"

He still can't explain this problem.

Lu Junchi felt that his analysis was a bit messy, and with this information, he could not concretize the murderer.

He couldn't even decide what to do next, and there were still many doubts and puzzles in his heart.

Lu Junchi has received a good education in modern criminal investigation. He is used to streamlining and proceduralizing the investigation of cases, step by step, quickly and agilely, using the most effective methods to quickly solve problems.

But the current case is different from ordinary cases. As an ordinary person, he is not good at analyzing the psychology of this pervert.

Qiao Ze asked: "By the way... Lu team, is there any consultant for our team?"

Lu Jun shook his head slowly: "The few who submitted their resumes recently are not suitable."

Qiao Ze lowered his head to the side for a moment, then suddenly said, "It would be great if the behavior analysis team was still there."

After hearing his words, Lu Junchi's expression changed slightly.

The Behavior Analysis Group first started as a special department under the FBI in the United States, referred to as BSU, and it was this group that carried forward the concept of "criminal profiling".

Criminal profiling and criminal psychological portraits are easy to say, but difficult to operate and define. In this regard, Huaxia has always been far behind Western countries.

In such a domestic environment, the Huadu General Bureau has been at the forefront of trying various criminal investigation methods.

More than ten years ago, Huadu introduced criminal profiling into the police circle and trained the police officers.

It's a pity that criminal psychology is not a subject that everyone can master, so it didn't seem to have much effect at the time.But such behavior is to sow a seed of hope for tomorrow.

After criminal profiling became more and more popular, it finally blossomed in Huadu.

Eight years ago, an expert in criminal psychology profiling named Yu Yan cracked an unsolved case in Huadu that had not been solved for several years, which established Yu Yan's identity and status, and was called Huadu's first profiler .

The cracking of the unsolved case made Huadu's top police officers truly see the power of criminal psychological profiling, and it also made them pay more attention to it.

Five years ago, the Huadu General Administration planned to form a professional behavior analysis team headed by the first profiler Yu Yan.

Tens of thousands of criminal policemen and even police academy students in Huadu participated in this massive selection and submitted their profile answers.

In the end, Yu Yan selected four people as the first members of the analysis team.

At this time, Yu Yan unfortunately died unexpectedly. At one time, everyone thought that there was little hope for the establishment of the behavior analysis team.

However, Director Tan still tried his best to resist all opinions and set up this behavior analysis team in accordance with Yu Yan's last wish.

In order to prevent the tragedy from happening again, the high-level police decided to protect the anonymity of several profilers, and the general bureau did not know their true identities.

The codenames of the four profilers in the Behavior Analysis Team are: Poet, Moonlight, Robin, and Prophet.

The team provides profiling assistance to the Huadu General Administration and its branches. As long as you upload various materials and detailed information about the case to the intranet platform, you will get a criminal psychological analysis of the suspect.

Although it will be written on each report: non-scientific evidence, for reference only.But those profiles were regarded as sacred orders by those grassroots police officers.

Practice has proved that criminal psychology portraits are not metaphysics, and the accuracy rate of those top profilers is relatively high.

The application and promotion of profiling has a certain positive effect, which greatly shortens the time for the Huadu police to solve the case and improves the efficiency of the case.

Especially the profiler poet, someone inside the police has conducted a summary calculation, and his profile accuracy rate is as high as 87%. With the help of his profile analysis, the Huadu police have repeatedly solved major cases, and some of them have not been able to catch the murderer for a long time unsolved case.

The poet, an extremely mysterious profiler, is also hailed as Yu Yan's successor, and some people even think that his talent and achievements have surpassed that of Yu Yan.

Some people say that the poet is the one who understands the criminal's psychology best and is closest to the crime.

All this, until two years ago...

The fine sand explosion occurred, the behavior analysis team was suddenly disbanded, and the poet never appeared again.

Many people speculate that the poet is dead.

All of this caught Huadu's police circle, which had already become dependent on criminal profiling, by surprise.

It takes a long time for a person accustomed to being supported to walk independently again.

But to this day, when encountering those unsolvable puzzles, they still think of that mysterious organization and that fabulous person.

After Lu Junchi took over the serious crime team, he repeatedly solved major cases, which improved the detection rate, but he obviously felt that there was a deficiency in the criminal psychological profile, so Lu Junchi thought of putting the matter of recruiting consultants on the agenda.

But the candidate for this consultant has never been decided.

In front of the floor-to-ceiling windows of the Huadu General Administration Building, under the morning light, the two were silent for a while.

Then Qiao Ze suddenly remembered something: "Captain Lu, I remembered something. Do you remember our cooperation with Huadu Police Academy Crime Academy?"

As soon as he reminded him, Lu Junchi remembered: "It's that... the teachers of the college provide us with case consultation, and the serious crime team submits criminal record files to them for academic research cooperation?"

This cooperation began a year ago, and both parties signed a confidentiality agreement, agreeing on the content of services provided to each other. In fact, during this year, the serious crime team basically exported one-way, and did not actually consult.

Qiao Ze nodded seriously: "Yes, the School of Criminal Crime is Crouching Tiger, Hidden Dragon. I have taken Director Liao's class in the past. They have courses on criminal psychology and some profiling analysis. You might as well go there. Ask, maybe you will have some unique insights." Qiao Ze reminded at this point, "Captain Lu, if you go there, maybe you can find a consultant by the way."

Lu Junchi pondered for a moment: "I'm afraid that there is a gap between academics and those of us who do criminal investigation. There are a lot of reasons and no practicality. Anyway, this is a way of thinking. I'll go and ask."

Qiao Ze said: "Yes, a dead horse is treated as a live horse doctor. If it doesn't help, just don't listen to them."

Lu Junchi told Qiao Ze, "After you go back, ask them to check the missing persons records first, and see if they can find anything. In addition, the searches at point [-] and point [-] were conducted in the middle of the night yesterday, so no one should be alarmed. Continue to let the criminal police team set up secret sentries to follow up and see if there are any suspicious people approaching these vehicles."

Qiao Ze responded and walked towards the serious crime team.

After arranging the work, Lu Junchi called Director Liao. Director Liao was in class, and his teaching assistant answered the call. He said that Director Liao finished class at about ten o'clock, and he could make an appointment to meet in the office building later.

Lu Junchi looked at the time at 09:30, and went directly downstairs and drove to Huadu Police Academy.

Huadu Police Academy is nearly eight kilometers away. Director Liao's office, Lu Junchi, has been there several times before, and it is on the third floor of the teacher's office.

Lu Junchi parked his car downstairs and walked up the stairs when his cell phone rang.

He picked it up and saw that it was Xing Jing who replied to him, saying that Shang Qinghan agreed to his application and would analyze the trace evidence.

Lu Junchi breathed a sigh of relief.

Holding the documents in his hand, he bowed his head and answered the message, walking quickly in the corridor, and he was about to reach the door of Director Liao's office.

Suddenly a figure walked out of the office on the opposite side. From the corner of his eyes, Lu Junchi saw that the other person was a tall and thin man. He hurriedly slowed down his pace, and then dodged to avoid it.

The corridor is very wide, enough for eight people to pass side by side. If it is an ordinary person, it will definitely be safe. Even if the reaction is slow, it is estimated that they will just pass by.

But when Lu Junchi dodged to his right, the man also dodged to his left, almost running into him in his direction.

Afterwards, the man directly tripped over him, and was about to fall forward, Lu Junchi reluctantly let go of the documents in his hand, stretched out his arms to hug him, and the man fell firmly into his arms.

The author has something to say: Does it feel good?Captain Lu.