National Forensic Doctor

The courtyard of the criminal police team was much deserted than usual.

In a county like Ningtai County with hundreds of thousands of people, there are not many major cases. Throughout the year, there are eight out of ten abnormal deaths, which will eventually turn into criminal cases, which are so-called homicides. , it’s about like one or two together.

Because of this, even if the case this time seems to be simple, the criminal police team is in full deployment mode.

When Jiang Yuan returned to the office, he saw that the fourth floor where the criminal investigation team was located was empty. Only the door of the trace inspection office was open, and someone was busy typing on the keyboard inside.

"Write the report more carefully. This case may lead to the death penalty. The requirements for death penalty verification are very strict." Wu Jun reminded Jiang Yuan, and then said: "When we were working on a case, one of the exhibits was a piece of plastic oil. Barrel, it has been two years since the case was completed, and suddenly we received a call asking us why the oil barrel in the photo was white, but the actual evidence was yellow."

Jiang Yuan turned on the phone and listened, and couldn't help but asked curiously: "Why?"

"Why? Because the actual evidence has been stored for a long time and the plastic has aged. We have to make supplementary materials again." Wu Jun paused and then said: "I just want to tell you that the verification of death penalty is stricter than that of other cases. There are so many pairs of eyes staring at us, there’s no harm in setting the standard a little higher.”

"I understand." Jiang Yuan followed the good advice, paused, and then asked: "Then the relationship between me and Uncle Seventeen...should we avoid it?"

"Only close relatives are needed." The close relatives Wu Jun said have different scopes in different legal provisions. Among them, administrative law has the broadest scope, and criminal law has the narrowest scope, which only covers spouses, parents, children, and siblings.

Jiang Yuan calmed down and worked seriously.

Soon, rows of photos were carefully arranged in front of him.

Seventeenth Uncle's intestines, Seventeenth Uncle's heart, Seventeenth Uncle's brain slices, Seventeenth Uncle's stomach contents... Jiang Yuan carefully selected and annotated clearly.

For police officers, handling cases is often far more complicated than solving them. Just like the murder case in front of us, even if the case is simple and clear, and the suspect pleads guilty, there is still countless paperwork to be completed when the case is handled.

It was almost after get off work time when noisy noises came from the yard.

Jiang Yuan looked out the window and saw all three vehicles of the Criminal Police Team parked in. Captain Liu of the Second Squadron was wearing police equipment and stood in front of the police car in the middle as if facing a formidable enemy.

Aunt Seventeen, who was thin and handcuffed with dull eyes, moved out of the back seat.

To be honest, Jiang Yuan has neither good nor bad memories of Aunt Seventeen. Before taking the public examination, he went to a medical school in another place for five years. Before taking the college entrance examination, he went to a boarding school for three years of high school. His impression of Aunt Seventeen was far less than his impression of Uncle Seventeen's big belly...

"The suspect identified the murder weapon as a chef's knife, which was thrown into the trash can outside the community." Wu Jun also stood up and looked down, updating Jiang Yuan on the case.

Jiang Yuan breathed a sigh of relief. When the case progresses to this level, the work of solving the case is basically over. Especially if the murder weapon is discarded and identified in a different place, it is ten times more difficult to overturn the case than if it is only a confession.

"Where is the abandoned body? She can't move it alone." Jiang Yuan asked again.

"Her brother helped move the food, using the tricycles and carts used to transport vegetables in the store." Wu Jun paused, and then said: "The person was also arrested and accounted for."

In this way, the physical evidence and oral confessions are complete, and it is basically an ironclad case.

While thinking wildly, the translucent system interface jumped out.

Mission: Conduct a comprehensive autopsy to help solve the case

Mission reward: Chongqing-style single-finger fingerprint analysis method - bow pattern identification (LV3).

Jiang Yuan stared with wide eyes and saw a silver dumpling fly into his head.

Numerous information, crowded in manically.

Chongqing-style single-finger fingerprint analysis method is a kind of single-finger fingerprint analysis method. It is also the earliest single-finger fingerprint analysis method adopted in China. It is specially used to deal with the situation where there is only one finger fingerprint, or even only one incomplete finger fingerprint. Similarly, there are various methods such as the domestic Qingdao-style single-finger fingerprint analysis method and the foreign Bartley-style single-finger fingerprint classification method. Different analysis methods cannot be said to be superior or inferior. The main reason is that the classification of fingerprints is different and the analysis methods are slightly different.

Simply put, this is a technology used to compare fingerprints.

Jiang Yuan's eyes brightened slightly. Fingerprint comparison can be said to be the most important skill in trace inspection. Moreover, it is time-consuming and labor-intensive to actually learn it. The system directly gave it to him, and he immediately felt that his happiness index increased.

However, comparing fingerprints is not an easy task.

The kind of machine that can input any fingerprint photo into a computer and instantly find matching fingerprints does not exist so far.

The internationally mature automatic fingerprint identification technology (AFIS), regardless of whether it is RBNEC, American COGENT, or French Morpho, all uses manual marking of on-site fingerprint features, which are so-called feature points, and then in the system, the fingerprints are Feature points are automatically matched and retrieved, and finally scored from high to low according to the degree of similarity to provide a candidate review list.

This is because fingerprints will deform due to factors such as pressure, and often in a non-linear manner. In many cases, fingerprints will also shift and cover. Poor storage conditions are commonplace, and fingerprints found at crime scenes are even more Probably mutilated.

In short, automatic fingerprint recognition technology requires someone to manually preprocess the fingerprints first.

As for devices such as employee punch-in machines, they only know whether two fingerprints are the same, and the recognition rate cannot meet the needs of the police.

At this time, Wu Jun just saw Jiang Yuan's expression and couldn't help coughing twice and said: "There's nothing going on. If you want to get off work, just go back first and I'll do the rest."

"Uh...is that okay?" Jiang Yuan hesitated. He kind of wanted to try out his new skills, but it didn't seem to stop him from trying again at home.

"That's all we have to do, just finish it." Wu Jun raised his chin proudly. Compared to the policemen who were just starting to get busy below, the forensic doctor's work was already over.