Criminal Investigation Notes

Early the next morning, three wooden boxes of different sizes were placed side by side on the transparent glass observation deck in the physical inspection room of the Huadu Police Station.

This is what the Chenyang branch in Huadu found after an overnight investigation.

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

Today, Lu Junchi brought Qiao Ze to the material appraisal center. As soon as he entered the door, a young female forensic doctor stood up and handed them gloves, masks and goggles.

This identification room is airtight and somewhat dark. There is a strong ventilation device inside. The lighting depends on various lights, large and small. Different lights have different effects and can illuminate different traces.

Lu Junchi put on the equipment and attached himself to watch.

The boxes were marked No. 1, No. 2, and No. 3 according to the storage time, and the first one they found was the No. 2 box.

The other two boxes looked similar, containing white powder and buried the stumps of some women.

Box 1, the largest, contained a knee-length foot. Case No. 2 contains the hands, and case No. 3 contains the hands of the other woman.

Three hands, and all of them were young women's hands, plus one foot, which meant that there were at least two, possibly three, victims.

The situation at hand is really tricky.

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

Xing Jing of the Wujian Center is a female forensic doctor. Just hearing the name is the material to be a criminal police officer.

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

Lu Jun looked at it for a while, then straightened up and asked, "What are those white powders?"

The three boxes seemed to be 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 the investigation.

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

Qiao Ze held the pen cap in his mouth and said vaguely: "Sister Jing, make it clear, I'll write it down..."

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

Qiao Ze flipped through the report and put on a diligent and inquisitive expression: "I'm just curious, what are the effects of these medicines? How come those stumps won't rot if they're inside?"

Xing Jing explained: "Among them, the role of camphor is to remove odors and maggots, the role of alum is to absorb oil, inhibit bacteria and coagulate proteins, and the boric acid is used for antisepsis."

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

Xing Jing nodded: "This is a preservative formulation for specimens, but it is not as popular as formalin, and it is not as effective as a mixed preservative of arsenic trioxide. However, this method is safer and easier to obtain raw materials. Most people use it at home. can be prepared."

Lu Junchi pressed his eyebrows, it was easy to buy and match, that is to say, it was difficult to track down the murderer through the drug channel.

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

Lu Junchi asked again, "Except for the stored drugs, what other information can we get?"

"Director Shang went out to work." Xing Jing brought another inspection report, "He has seen it in person before, fingerprints, DNA, blood type, and the way the wound is formed, he has all studied, and the tool is suspected to be a sharp chainsaw. Several of the victims were 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 contains a certain amount of animal narcotics, and there are life reactions. These limbs may have been sawed off when the victim was alive. Yes, after immobilizing the victims, the murderer cut off their hands and feet, treated them, and finally embalmed. Also, the dose of anesthesia was not large, and he suspected that the victims were semi-conscious."

Such a murderer is too cruel.

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

Xing Jing shook her head: "A wound with such a large wound will cause severe blood loss and infection. Even if you go to a professional hospital, you may not be able to save it, so it can basically be determined that the victim is already dead."

After listening to his words, a strange scene appeared in Lu Junchi's mind. In the dimly lit room, in front of the simple bed, a man in a raincoat with a gloomy face sawed off the hands of the woman lying in front of him almost at the wrists. The house was filled with the humming of chainsaws, and the feeble cry of a woman, who made a slight cry for help, but no one answered...

Qiao Ze recorded on the side, and after hearing this, a trace of fear flashed in his eyes, and his teeth trembled involuntarily.

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

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

After Xing Jing's introduction, she handed various inspection reports and a stack of photos to Lu Junchi: "Captain Lu, that's all the information we can provide. What else do you think needs to be inspected?"

Lu Jun hesitated for a moment and said, "I want to apply to check the micro-substances in the fingernails to see if it can help us determine the occupation of the deceased."

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

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

"Micro-substance?!" Xing Jing looked at Lu Junchi with a smile on the corner of her mouth, "The army team said this is a method, there is indeed a lot of information hidden in people's fingers, which cannot be washed away by repeated hand washing. I Knowing this technology, it seems that the specific method is to obtain information through the results after spectral measurement, but we can't do this here, and we need to send it to the laboratory of Huadu Police Officers College."

After speaking, Xing Jing took out a note and recorded: "I will write it down first, and when Director Shang comes back to discuss with him, I will tell you as soon as there is news, that is, I will trouble the Army to wait."

Lu Jun nodded late, expressing understanding.

The physical identification center of the Huadu General Bureau has a heavy workload. They are not only responsible for various tests of the various criminal police teams, but also sometimes cooperate with the inspection and testing of some sub-bureaus. All kinds of tests and analysis take time.

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

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

The work here is almost over, Lu Junchi and Qiao Ze walked out.

The building of Huadu General Administration is very modern, especially this 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. The whole building has a constant temperature and constant oxygen. Floor-to-ceiling windows, through the glass, offer views of the outside.

Now in midsummer, looking around, a lush green.

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

Qiao Ze akimbo bluntly said: "This murderer is a big pervert! But he is too cunning and sophisticated. We have checked so much, but we don't know anything about this murderer."

"It doesn't mean he doesn't know anything. The murderer should be a man and act alone." Lu Junchi inferred in a low voice, "The murderer has channels to buy chemicals and medicines, and has a certain amount of relevant knowledge. He should not be too low-educated. His job is The available time should be relatively ample, with independent office space and a place for dismembering the body..."

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

He has not been able to explain this issue yet.

Lu Junchi felt that his analysis was a bit messy. With this information, he could not visualize the murderer.

He couldn't even decide what to do next, and he still had many questions and puzzles in his heart.

Lu Junchi has received a good education in modern criminal investigation. He is accustomed to process and program solving cases, step by step, quickly and agilely, and solve problems quickly with the best method.

But the current case is different from ordinary cases. He is not good at analyzing the psychology of such perverts as an ordinary person.

Qiao Ze asked: "By the way... Army, have any consultants in our team been selected?"

Lu Junchi shook his head: "The few people who have submitted their resumes recently are not very suitable."

Qiao Ze bowed his head for a while, and suddenly said, "It would be nice if the behavior analysis team was still there."

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

The behavior analysis group 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".

The technology of crime profile and criminal psychology portrait is easy to say, but it is actually difficult to operate and define. In this regard, China has always been far behind the western countries.

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

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

Unfortunately, criminal psychology is not a subject that everyone can master, so it didn't seem to be very effective at the time. But this behavior is to sow a seed of hope for tomorrow.

After criminal profiling became more and more popular, it finally came to fruition in Huadu.

Eight years ago, a criminal psychology profiling expert named Yu Yan solved an unsolved case for Huadu for several years. .

The discovery of the unsolved case has made the senior police officers in Huadu really see the power of criminal psychology, and they have paid more and more attention to it.

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

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

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

At this moment, Yu Yan died unexpectedly, and everyone thought that there was little hope for the establishment of the behavior analysis group.

However, Bureau Tan still defied public opinion and set up this behavior analysis team in accordance with Yu Yan's last wish.

In order to prevent the tragedy from repeating itself, the senior police decided to protect the anonymity of several profilers, and the general bureau did not know their true identities.

The code names of the four profilers in the behavioral analysis group are: Poet, Moonlight, Robin, Prophet.

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

Although every report will write: non-scientific evidence, for reference only. But those profiles were regarded as imperial edicts by those grassroots police officers.

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

The application and promotion of profiling has a certain positive effect, greatly shortening the time for Huadu police to solve cases and improving the efficiency of solving cases.

Especially the profiler poet. Someone in the police has done a summary calculation. 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 extremely mysterious profiler of the poet is also known as Yu Yan's successor, and some people even think that his talent and achievements have surpassed the original Yu Yan.

Some people say that the poet is the one who understands the psychology of the criminal best and is the closest to the sin.

All this until two years ago...

The fine sand explosion happened, 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 the Huadu police, who had become reliant on criminal profiling, by surprise.

It took a long time for a person who was used to being helped to walk independently again.

But to this day, when they encounter those difficult puzzles, they still think of the mysterious organization and the mythical person.

After Lu Junchi took over the serious crime team, he solved major cases repeatedly, which increased the detection rate, but he clearly felt that there was a lack of criminal psychology portraits, so Lu Junchi thought of putting the recruitment of consultants on the agenda.

But the candidate for this consultant has not been decided.

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

Then Qiao Ze suddenly remembered something: "Road team, I remembered something, do you remember our cooperation with the Huadu Police Academy's Criminology Academy?"

After his reminder, Lu Junchi remembered: "That's the one... the teachers of the college provide us with case consultation, and the serious crime team submits criminal record files for them to cooperate in academic research?"

This cooperation started a year ago. Both parties signed a non-disclosure agreement, stipulating the content of services to be provided to each other. In fact, during this year, the serious crime team has basically been exporting in one direction, and has not actually consulted.

Qiao Ze applied for a serious nod: "Yeah, the Criminal Academy, that is Crouching Tiger, Hidden Dragon. I have also taken Director Liao's class in the past. They have courses on criminal psychology and some profile analysis. You might as well go over there. Ask, maybe there will be some unique insights." Qiao Ze said here and reminded, "Road team, if you go there, maybe you can find a consultant by the way."

Lu Junchi pondered for a moment: "I'm afraid that there will be a gap between academics and those of us who are criminal investigators. There is a lot of reasoning and no practicality. Anyway, this is an idea. I will go over and ask."

Qiao Ze said: "Yes, dead horses are used as live horse doctors. If there is no help, just don't listen to them."

Lu Junchi told Qiao Ze, "When you go back, let a few of them check the missing persons records first and see if they can find anything. In addition, the first and third points were searched in the middle of the night yesterday, so no one should have been disturbed. Continue to let the criminal police team set up dark posts to follow and see if there are suspicious people waiting to approach these vehicles."

Qiao Ze responded and walked in the direction of the serious crime team.

After arranging the work, Lu Junchi called Director Liao. Director Liao was in class, and his assistant answered the call. He said that Director Liao left get out of class at about ten o'clock and could meet in the office building later.

Lu Junchi looked at it at 9:30 and drove downstairs to the Huadu Police Academy.

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

Lu Junchi parked his car under the office building and walked all the way up the stairs when his phone suddenly rang.

He picked it up and saw that Xing Jing replied to him, saying that Shang Qinghan had agreed to his application and would conduct an analysis of trace physical evidence.

Lu Junchi breathed a sigh of relief.

With the information in his hand, he lowered his head to return the information, walked quickly in the corridor, and 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 Lu Junchi's vision, he saw that the other person was a tall and thin man. He hurriedly slowed down, then flashed away, trying to avoid it.

The corridor is very wide, enough for eight people to pass side by side. If it is an ordinary person, it must be fine. Even if the response is slow, it is estimated that it will pass by.

However, when Lu Jun dodged to his right, the man even ducked to his left, almost hitting him in his direction.

Afterwards, the man stumbled directly on top of him, seeing that he was about to fall forward, Lu Junchi reluctantly let go of the information 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.