Chapter 1213: Lingering

Jinshan at night is like a steamed bun grabbed by a black hand. The scattered lights are like bruises grabbed on the bun, a bit bright but not bright enough, similar to a matte feeling.

The road under Jinshan has been repaired several times. If you observe carefully, you can still see the shadows of some old roads, especially several places where the bends were cut, which look suitable for ambushes.

Jiang Yuan asked someone to find an electric scooter. He would ride for a while and then get off to look, and from time to time, he would let Wang Chuanxing make records.

Liu Jinghui rode another electric scooter and followed behind, yawning incessantly, forcing Cui Qishan on the side to pay attention from time to time, for fear that he would just fall asleep.

It was another big bend. Jiang Yuan stopped the car, shone a flashlight, and saw that in the drainage ditch next to the lane, there was garbage like clothing stuffed in it.

The accompanying criminal technology technician hurriedly stepped forward and used a hook to pull the garbage up, but it was a few filthy plastic bags.

"Shouldn't be." Jiang Yuan waved his hand and gave up.

This is a situation that criminal police often encounter when walking the scene. The crime scene imagined by ordinary people is a state of collecting all evidence in detail, while the real scene only collects evidence that looks most like evidence.

Therefore, the criminals who were not caught in ordinary cases were not without times when they were not careful. They might have been careless thirty or forty times, but because of various reasons, the criminal police's comb didn't comb to them.

Some criminals became arrogant because of this, thinking they had mastered some remarkable criminal techniques, so they repeated crimes, escalated crimes, and provoked the police. By this time, the police's comb would suddenly become dense. Criminals who were not particularly lucky would basically fall.

Therefore, why can some cold cases find relevant evidence when returning to the first crime scene? It's not entirely that the first criminal police officer was irresponsible. The criminal's status rose, the level of the task force increased, which also represented that the comb became dense.

However, even the task force organized by Jiang Yuan now couldn't throw all garbage into the laboratory. Evidence refinement is boundless. Garbage bags can be brought back and dissolved in water for liquid phase analysis, or they can be cut into pieces for 100 groups of liquid phase analysis, or they can be dipped with cotton swabs for trace analysis. But things that are useless are ultimately useless.

Jiang Yuan crossed the drainage ditch and walked into the bay. A larger buffer zone was built here. Whether driving or riding, one could only see the bend, and the depths of the buffer zone could not be seen. If hiding people, this was a good waiting point.

Two criminal technology technicians raised the big lights on the scene, illuminating the buffer zone clearly.

Jiang Yuan looked at the ground carefully.

This was a flattened ground, but the ground was soft, and there was dust accumulation. Without special cleaning, footprints could be seen.

And special cleaning, only after a week, with Jiang Yuan's ability, footprints could still be seen.

"Are there any?" Liu Jinghui got off the car and walked a few steps, feeling much more awake, and only said half of what he said, feeling that his own dragon should be able to understand.

Jiang Yuan straightened his waist and said: "There are footprints, but in terms of time, it doesn't quite fit. They are old footprints. Take them."

Jiang Yuan shouted and called people over to take several footprints almost buried by dust.

"Not here?" Liu Jinghui asked.

"Shouldn't be." Jiang Yuan shook his head.

Liu Jinghui pondered for a few seconds and said: "Your scanning of the traces at the scene is actually based on a concept: the victim came out of the subway station, rode a shared bike over, encountered something or someone, and then went missing. If the case is not conducted according to your concept, you won't find traces at the scene. Actually, even if it is conducted according to your concept, you might not find the scene, right?"

"Hmm." Jiang Yuan admitted. The assumption is just a simple car accident, or even no car accident. Suppose someone drove and stopped on the side of the road, stopped the victim, and then tricked the victim into the car, or kidnapped the victim into the car. After a week, it would be very difficult to find clues through this method.

Seeing Jiang Yuan's approval, Liu Jinghui immediately started to get excited and continued to analyze: "Compared to investigating this uncertain scene, maybe finding transportation is more effective. The victim went missing. Unless she ran away on her own, otherwise, the perpetrator must have a car or something to take her away."

Xiao Si listened from behind and had a flash of inspiration: "Makeup?"

"Also..." Liu Jinghui sighed: "It's possible, but it's too outrageous."

"As for vehicles, there are too many." Jiang Yuan naturally had thought of this plan. In fact, they had handled cases before, and solving cases by checking cars wasn't just once or twice.

However, checking cars often requires the cooperation of vehicle checkpoints, which is that when a car comes, the surveillance will click and take a photo. Moreover, specially designed roads need to cooperate with surveillance, so that the light source can be kept suitable all day long, ensuring that the whole car is photographed, especially the license plate and the faces of the driver and the front passenger.

Without vehicle checkpoints, the workload of checking cars is a hundred times increase, and it is easy to miss, easy to not take clear photos, and it is even harder to take clear photos of the faces of the driver and the front passenger. The high definition of surveillance cannot be higher than the photos of the checkpoints, and the storage capacity is not at the same level.

Finally, no matter which plan, the workload is too big. Vehicle checkpoints are all placed on main roads. How big is the traffic in Beijing... If you just check a license plate or something, it's a matter of minutes, but aimless searching is an endless task.

Liu Jinghui wasn't just talking casually. He pondered and said: "I think so. Look, no matter what the suspect's idea is and what the purpose is, the time he lingers in this area is likely to be unusually long."

When Liu Jinghui started to use his brain, there was still light on his face—the inspection light on the side was still on—he counted with his fingers and said: "The victim rode a shared bike from the subway station, passed through the nearby streets, and then that piece of industrial and commercial enterprises, and then entered the mountain, and finally reached the mountain gate of Jinshan, totaling about four kilometers. We ride normally, and we can ride there in twenty or thirty minutes. For vehicles, how long can this section run?"

Liu Jinghui gave a judgment while saying: "Normally, if I say, a car runs this section of the road, 5 minutes is enough. Of course, we have to pinch the vehicle checkpoints. It is uncertain where they went in the middle. We pinch the time of passing. The background software should be able to calculate directly, right? List the overtime vehicles and count them as suspects, how about it?"

"There are no checkpoints at the subway station, and there are no checkpoints at Jinshan. We can only find them from the front and back. In this, the passing cars are the easiest to be screened out, but some cars go to Jinshan to play, some cars are employees of the enterprises in the middle, and there are so many local residents, residents of various residential areas and self-built houses. Their cars may stop when they come in..."

"Take the data of the parking lot near Jinshan and screen it. If it is a local resident... actually, don't say, these residents really have suspects..." Liu Jinghui stopped while saying.

Theft cases are often easy to carry out in places further away, but homicide cases are not necessarily. And from the subway to Jinshan, several intersections go in, and there are rows of buildings inside.

Although the occupancy rate here is not high, many houses may be empty, but there are still many people living there. And because of the subway station and the cheapness of the suburbs, there are group rentals in some residential buildings. Calculated this way, there are quite a few people living within these few kilometers.

If the perpetrator lives in this section, commits the crime in this section, and then drives home from a certain intersection, the previous investigation will all be in vain.

"Wait for the dog to come and say." Jiang Yuan shook his head and said: "Continue to look at the scene."

Prophecy and probability have no meaning in front of real cases. Some investigations may return empty-handed, but it is these failed investigations that can shrink the scope of investigation step by step.

(End of chapter) ===== CHAPTER 1214 =====

(End of chapter)