National Forensic Doctor

Luojin City Criminal Police Detachment Conference Room.

Bureau Xu, Wang Branch of the Luojin Municipal Bureau and many police officers, Cui Xiaohu and Li Haochen who came from the ministry, as well as Huang Qiangmin, Jiang Yuan and others gathered together.

Entering the conference room, Jiang Yuan could feel a different atmosphere from yesterday.

If yesterday's atmosphere was tense, lively and united, today's conference room atmosphere is lively, relaxed and happy.

It's like yesterday it was a group of police dogs having a meeting, and today it's a group of golden retrievers having a meeting.

If it weren't for the leadership, like Pang Jidong and others, they would all want to tickle Jiang Yuan with their little eyes.

Of course, Director Xu and others are still more serious and have a more arrogant attitude for the time being. After all, the Luojin Municipal Bureau is definitely Party A this time, and I know how it feels to be a father.

Taking a relaxed sip of tea, Director Xu smiled and said: "Jiang Yuan, don't be burdened. With your ability, it will definitely be easy to handle cases. Even if you get stuck, you can just finish three cases within two years. Really do it." It’s not over yet, let’s discuss it again.”

Wang Zhi also laughed and said: "Indeed, in fact, at the beginning, we just asked you to provide technical support. Director Huang's attitude is more resolute, and he still hopes to have command power, so we also agree. In short, detection is Just the case..."

They were talking about the case that was "forced" to Jiang Yuan - the 110 Luo Jin Second Sexual Assault Case.

The word "Luo Jin" indicates that the location of the case was in the capital of Baijiang Province; "110" refers to the time when the first case occurred, on January 10 last year; the second sexual assault refers to the special nature of the case.

The criminal in this case used a relatively special way of committing the crime. He first used electric shock to subdue the victim, then covered the victim's eyes with a piece of cloth, and carried her to a nearby location for sexual assault. Then, he would take the victim into a car and take her to another unknown location. , carried out multiple sexual assaults in a row, and after the crime was completed, he drove the victim back to the original location and abandoned it.

The locations he chose were relatively remote areas without cameras or surveillance. The targets he chose to commit crimes were young middle school girls. After the sexual assault, the victims could not even identify the crime scene.

In addition to the rigorous methods of committing crimes, the time when this person committed crimes also embarrassed the police. The first two crimes were committed on January 10 and January 19 respectively. According to the way the police named the case, it is easy for people to feel provocative. meaning.

Unfortunately, the case is not easy to solve.

Although, in a normal case, the more the criminal does, the more flaws there will be. But in this case, the criminal left few clues.

The victim was electrocuted and controlled by a rope. Not only was his ability to resist weak, but the clues he could provide were also limited. The same is true for physical evidence. Effective physical evidence is basically close to none.

Under this situation, the Luojin City Bureau has begun to try to use criminal profiling, that is, psychological things, to solve the case.

There is still no breakthrough.

Bureau Xu and others' main expectation for Jiang Yuan is this case.

Rape is one of the eight serious crimes, and serial rape is even worse in nature. In addition, the victims were all middle school girls, so the destructive power of this case to society is far greater than imagined.

Since last year, the Luojin Municipal Bureau has invested a lot of manpower and material resources in this case, and has also specially updated the surveillance systems in many suburbs. After the fourth case occurred in the middle of the year, the police even frantically set up checkpoints, hoping to catch someone by luck. to the murderer.

Although the case has not been solved, the criminal's tendency to commit crazy crimes has been cut off. To this day, the number of incidents in this case has been fixed at four.

Despite this, the Luojin City Bureau still regarded this case as a shame. Therefore, with the kidnapping case over, the first thing that the Luojin City Bureau with a little spare energy thought of was the 110 Luojin Second Sexual Invasion Case.

After Jiang Yuan received the news yesterday, he had already read the information on the case, and only after getting his consent did today's meeting take place.

At this time, in front of the Luo Jin people, Jiang Yuan gave a positive reply: "As long as resources can be guaranteed, there is still a chance to solve this case."

Even though they had received a reply long ago, everyone was still happy when they heard Jiang Yuan's positive answer.

Director Xu hurriedly said: "There is no upper limit in this case and real reimbursement will be made. Forensic Doctor Jiang can rest assured."

The detachment leader was a real person and had a good deal with Huang Qiangmin, so he said: "The fourth brigade can be singled out and all members can join the task force."

"The cost of the trace evidence laboratory may be higher, so I have to be tight on time." Jiang Yuan made another request.

Director Xu and others naturally agreed.

Jiang Yuan looked at Huang Qiangmin again, and continued: "Then this case will be established first. In addition, the three agreed cases..."

"There's no rush, just do the 110 case first." Director Xu suddenly became very talkative.

Jiang Yuan smiled and said: "When I was looking at cases on the intranet yesterday, I took a look at other cases. There was a murder case in the backlog. I thought the fingerprint evidence was quite special, so I did it casually, and the fingerprints were also matched. , send someone back to follow up."

Jiang Yuan took out a piece of A4 paper that had been folded several times from his pocket and handed it forward.

The detachment leader hurriedly picked it up and opened it to see that it was a fingerprint identification certificate. Attached below was the information of the suspect, who was a prisoner who had been released from prison.

"You mean this person is a suspect?" The detachment leader still had little contact with Jiang Yuan, so he still couldn't figure out the specific pattern.

"The bloody handprint is either a suspect or a witness. Bring it back and examine it and you will know." Jiang Yuan took a fancy to the vague bloody handprint, so he directly fingerprinted it. Image enhancement LV5, then two fingerprint identification skills, and a temporary +1 for LV4 fingerprint identification, it only took more than half an hour to match the fingerprint.

Based on Jiang Yuan's experience, this backlog of murder cases has been solved.

The detachment leader was greatly shocked, and Director Xu was inexplicably surprised.

Huang Qiangmin smiled and said nothing. Jiang Yuan's first second-class skill was achieved during the fingerprint battle. Luojin City itself did not have as strong a fingerprint master as Jiang Yuan.

"Lao Yi, follow up on this case." The detachment leader named the captain of his second brigade.

The captain of the Second Brigade is a traditional hard-working old detective with a sharp look in his eyes. He looks like he doesn't believe anyone. At this moment, he just nodded in agreement.

The detachment leader coughed again and said, "Well... Captain Jiang, do you have any investigation direction regarding the 110 case?"

He was about to ask this question just now, but was interrupted by Jiang Yuan with a fingerprint. Now he spoke more politely.

Jiang Yuan naturally did not need to cover up and said directly: "I saw the clothes of four victims in the exhibit list yesterday. I think we can start from this and use forensic botany to delineate the location of the case."

Forensic botany is connected with people on one side and places on the other.

With forensic botany, the easiest thing to find is not the person, but the place.

In this serial rape case, the crime scene has never been found, which is a big problem.

This is not only relevant to the investigation stage, but also to the subsequent litigation.

Looking at everyone's expressions, Jiang Yuan knew that they didn't quite understand the situation, so he continued: "My idea is relatively simple. When the perpetrator committed the crime, the victim's clothes should have come into contact with the first scene and the second scene. And the contact time should not be short. If there are four cases, we may be able to find a pattern."

"Second. The location where the murderer first committed violence should not be far from the location where the victim was electrocuted. The victim was unable to tell the exact time and location because he was electrocuted, blindfolded, and frightened. Pollen No problem."

"Can...can we find it this way? It's been more than a year. Is the pollen evidence still useful?" The detachment leader felt more and more unbelievable the more he listened.

Jiang Yuan only said: "For pollen, ten years apart is child's play, but the details will depend on today's experimental operation."

The detachment leader, Director Xu and others just nodded. I don't know why.

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