The ditches in the old town were cordoned off, and there were big aunts pointing fingers nearby.

Few people came to the ditch, and a corpse appeared inexplicably, frightening the passers-by.

But after a few moments, the group began to gossip.

The deceased was obviously not from this district, and his clothes looked gorgeous, which was also very discordant with the old city.

"Why did you say this man died here? ”

"That's it, you said that we are not popular in the first place, if we make a fuss or something, what will we do then?"

"What are you talking about? But I really died a miserable death. Weird and scary!"

“……”

The person did die quite miserably, he was stabbed several times, and when he was thrown away, he should not have completely lost his breath, and there were still traces of slight struggle around.

The aquatic plants in the ditch are still stained with a lot of blood, and even the mud on the surface is dark red.

"The estimated time of death was around two o'clock in the morning, and the cause of death was hemorrhagic shock. ”

"The murder weapon should be an ordinary fruit knife, and there is nothing special about it. ”

The iceberg female forensic doctor is looking for clues.

The corpse certainly can't be left here for a long time, and how many clues can be found before moving out depends on the results of the on-site investigation.

Zhou You was a little sick to his stomach, especially the strong smell of blood in the air, and the white wound after being blistered, the visual impact made him want to vomit.

"Soybean milk powder, do you have any clues?" Song Guyan had a gloomy face, and he was in a very bad mood.

The deceased is Dong Xian, who the police are looking for, but he didn't expect to die here, and he died for more than 12 hours.

Zhou You suppressed the sour taste in his throat and eyes, and walked around the scene.

The running water washed away a lot of clues, but there were a few footprints. However, before the police arrived, there were many people entering the scene, and it was not known who these footprints were.

Dong Xian died, and the clue was cut off.

Zhou You's state is very poor, but how can you spit out the chicken legs that you can eat? What a waste!

I took a few deep breaths and calmed down.

Zhou You sobered up a lot.

When you're full, your mind becomes blurry. If he weren't on a mission, he would definitely find a place to get some good sleep.

The smell of earthy, sour water, and blood were mixed together, and the smell was eliminated one by one.

This is......

"Wow!"

"Wow!"

Zhou You rushed straight over and turned into a black shadow.

Li Mingquan was still thinking about who was so murderous and able to kill such a big guy. Suddenly, the whole person lost his balance, and he almost fell into the ditch.

The water in the ditch smells weird, and it smells bloody, and if you plant it in it, you will definitely be disgusted to death.

Li Mingquan turned his head and saw a running Labrador.

Is soy milk powder a stimulant?

A cigarette butt, stuck in the mud, had been trampled on a lot of feet, and the shape became very strange.

In broad daylight, the onlookers were all aunts, and no one at the scene smoked, so where did this cigarette butt come from?

The female forensic doctor ran over and stuffed the cigarette butt into the evidence bag with tweezers.

On-site investigation is the primary link in the investigation of criminal cases, and occupies a particularly important position in criminal investigation work. The task is to discover and collect traces and physical evidence of crimes, study and analyze the facts of the case, judge the nature of the case, determine the direction and scope of investigation, and provide clues and evidence for solving the case.

It can be said that the on-site investigation determines the direction and steps of the investigation, and once there is a problem in the direction, it means that the investigation is meaningless.

In the case of nothing to gain, Zhou You found this cigarette butt through the unique pungent smell of cigarette ash stained with water, which made her so excited. After analyzing the trajectory of the crime scene, the female forensic doctor of Bingshan preliminarily determined that the cigarette butt sample was of great value and was immediately sent back to the technical department for examination.

The biological information left behind on the site is time-limited, and if it is too long, some things will be inactivated and become worthless.

DNA labs have been tested and repeatedly compared, especially in the large database within the police system, and the residual information on cigarette butts is very similar to the information entered in a previous homicide in the next province.

The public security department of the next province soon came back with the news that the murderer was still on the run. They thought that the clues of the murder were broken, but who would have thought that they would actually appear in Shanghai.

Habitual offenders, brutal methods, and basically no possibility of intersection.

Is it the old way of buying murder?

The world is unpredictable, Dong Xian made a whole case of attacking the police, and contacted many professional killers, who would have thought that in the end he would be killed by another person who bought the murderer.

The habitual murderer, nicknamed Lao Niu, whose real name is Ren Fan, has been on the run for three or four years, and the police in the next province are not idle, but their whereabouts have not been found. As soon as he received the request for assistance from the Shanghai Municipal Bureau, he immediately faxed the relevant information.

Song Guyan got a copy of it, which explained in detail what Ren Fan had committed last crime.

Ren Fan looks ordinary, is relatively indifferent, and doesn't communicate much with others. But it was that one person who hacked to death and injured many people with extremely ferocious means, just because he felt that his neighbor was playing mahjong and noisy, which affected his rest.

Judging from the detection situation at that time, Ren Fan was very impulsive and could not have a bad IQ. The scene was cleaned up very cleanly, and the police did not lock him in the first place, giving him time to escape.

Song Guyan thought about the modus operandi of this crime, and he could have killed him with one sword, but Ren Fan didn't finish Dong Xian, so he watched him struggle until the blood was about to run dry.

That cigarette butt was probably left by Ren Fan who silently watched Dong Xian's dying struggle at the scene.

This is not simply cruelty, but also a disregard for life, and an extremely distorted psychology.

The Shanghai City Bureau has made great efforts and dispatched a large number of police forces to start a dragnet investigation, especially to verify outsiders, in order to further reduce the space for Ren Fan's activities.

People always have to eat, drink, and Lazar, even in a relatively closed environment, they have to exchange information with the outside world. For the time being, the city bureau has no clever way to force Ren Fan to appear, so it can only use the oldest method.

The old method is time-consuming and labor-intensive, but it is easy to use, and I soon got some news from Ren Fan in several small hotels.

Song Guyan deliberately marked these hotels on the map, and saw the trajectory of Ren Fan's actions.

As a wanted criminal, Ren Fan would never dare to take a long-distance bus and go to hotels that require identity registration, so his movement trajectory can really reflect his route and whereabouts.

At first, Ren Fan came all the way east from the next province, but when he arrived at the high-tech zone, he suddenly turned a corner and went straight to the old city.

I guess I suddenly received an order from behind the scenes.