In various cases, the most feared thing for the criminal police is a sudden crime, such as two strangers on the street getting into a fight, and then one of them is killed and the other escapes. If surveillance does not obtain enough footage, it becomes extremely difficult to find the killer.

And well-planned cases, due to the long preparation time, must be traceable, and those traces and flaws left in the process will become a breakthrough for the police to detect.

To put it simply, many detectives will have a lot of very complicated case solving processes, but how many movies and television have you seen with the theme of sudden crimes? Even if Sherlock Holmes is reborn, he can't guarantee that he will be able to sort out the ins and outs of sudden crimes.

Criminal investigation is a relatively complex industry, and when it comes to human matters, there are no particularly fixed routines and rules to be found, and there will always be some situations that do not conform to the books. As a simple example, the general crime scene footprint analysis will analyze the height and physical appearance of the suspect according to the size of the shoe. But some people are born with small feet, and the size 39 shoes on the scene may be tall and strong men, if you follow the experience to track down, it is a mistake from the beginning.

Whether it is the previous attack on the police or the next drug trafficking network case, there are traces to follow. The real key means are criminal investigation and special services, and the Shanghai City Bureau has adopted both surveillance and informants to lock down the identity of Lao A in a variety of ways.

"Team Lin, the No. 3 inner line sent an audio material over, it should be Lao A's. ”

"Are you sure?"

"There are no samples to compare for the time being, so I can't be sure!"

"Let's compare it in the database first. ”

“……”

I finally got something valuable in the technical department, and I immediately got busy.

In criminal investigation, the technical department is the provider of ammunition, and many important clues have to be dealt with by them. If they were dumbfounded, the whole case would basically come to a standstill.

…………

At the action meeting of the task force, Song Guyan looked at the image released by the projector in disbelief.

She wondered if something was wrong with her or something was wrong with the technical department.

How could Old A be him?

This person Song Guyan has seen it, and he has seen it several times.

Du Xian, the owner of that pony!

He, how could he be the old A?

After the audio comparison was completed, Du Xian was locked. And then when collecting Du Xian's information, the criminal investigators found a lot of problems with him.

Don't look at the fact that he has a lot of companies under his name and has done a lot of venture capital, but these can't support his assets at all. The unknown source of a large amount of funds has become Du Xian's biggest flaw.

And after tracking for a period of time, Du Xian's multiple accounts were immediately frozen, and he was blacklisted, and various stations and airlines would not let him pass through the security check.

But at the last moment, Du Xianren disappeared, before the criminal police team that arrested him arrived.

Du Xian left in a very hurry, and he didn't even bring a change of clothes like this.

"Check!"

"Check it out!"

"Director, you stopped me before and didn't let me check the inside, because I was afraid of disturbing the morale of the army. Now the biggest fish has run away because of this inner ghost, and if you don't check it, don't try to catch Du Xian!"

Song Changhe went crazy directly at the meeting.

No one can swallow this breath. finally pursued this case to the end, and it took a lot of effort, but in the end, it failed to end because of internal moths.

The director also had a gloomy face, which was indeed inappropriate for him.

There is a problem within the bureau, the level is not low, and he should bear the first responsibility.

In fact, in many actions, many people at the meeting were aware that someone might report the news, but the things that happened were not too big, and they did not plan to make a big move. But who would have thought that in the end there would be such a big accident.

"Check, you have to check. The director eased the tension in the meeting, "But look at it strategically." ”

"First determine to which level, resolutely not to expand and affect the normal operation of the police station. ”

The general direction of the director has been set, which is equivalent to giving Song Changhe a bottom line. As long as it doesn't interfere with normal operation, he will handle the rest by himself, which can be regarded as a one-time compensation.

Fortunately, Song Changhe has a strong sense of principle and will not take this opportunity to crack down on dissidents, so the director of the bureau gave such a high authority.

In the next two days, many police officers noticed that the atmosphere in the city bureau was a little strange, but those who knew the inside story were silent. It's the time when the storm is on the cusp, and no one can talk much.

Song Changhe's actions were very fast, and he directly sent the deputy director of a sub-bureau in, and by the way, a director of the city bureau was also punished because he didn't have a door in his mouth.

In fact, there must be more than that, but the moths at the bottom can't receive important information, and it's not suitable for expanding the impact area, so Song Changhe didn't track it too much.

After cleaning up the team, the next step is to find Du Xian's traces.

According to the moth's confession, the message was sent on an anonymous mobile phone as soon as he received the order to act. At this point in time, Du Xian didn't have time to run out of Shanghai, after all, the speed of the city bureau was not slow, and the wanted warrant had already been issued to the grassroots level.

At the same time, the leaderless sales network was exposed, and with the assistance of the anti-narcotics force, the Shanghai Municipal Bureau had an absolute advantage in sweeping up the entire network.

Judging from the situation explained by some backbones, Du Xian is inextricably linked with several previous major drug cases, and has a lot to do with one of them. This sales network was initially disguised as an industrial group and developed its downline by employing workers. Du Xian's patience was very good, and he was not exposed at the first time, but spent several years perfecting it, forming a hierarchical and single-line contact network.

With careful arrangement, it is difficult for the police to destroy the entire network by catching a few small fish and shrimp. However, Du Xian obviously did not expect that the police would directly attack Huanglong from top to bottom, and the self-protection mechanism of the entire network did not play a role at all.

……

Du Xian sorted out his suit, looked at the time, picked up the bag on the bed and went downstairs.

The answering sedan had already stopped at the door.

Although Du Xian did not tell his subordinates about these hiding places, the funds for the purchase of the house also came from a safe account, and the house was also registered under a stranger, but Du Xian never had any confidence in his heart, and he was anxious to change another location.

Du Xian has never underestimated the police, and has prepared a lot of retreats for himself.

There are three caves of cunning rabbits, and Du Xian has at least five or six hiding places.

After being exposed, Du Xian knew that he could no longer stay in China, otherwise he would be found by the police sooner or later. It's just that the various intersections are too strict, and he has to arrange everything before he dares to escape.

Anyway, a lot of funds have been transferred abroad, and Du Xian can still live smoothly when he goes out.

"Boss, at half past eleven in the evening, the boat went directly to Zhoushan, and then diverted to the open sea. ”

"Once on the cruise, it's safe. "The driver who drove the car was very competent.

Du Xian nodded: "The person who does the work?"

"It's all disposed of. The driver said coldly.

Du Xian's consistent way involves his own safety, so the corpse is the most confidential.

The car started quickly, and Du Xian leaned on the back seat, his eyes slightly closed.