Chapter 456 Upgrade

"According to the ordinary murder case, is the murder target the victim?" Captain Han asked, still cooperating with Liu Jinghui's flattery. At the same time, he asked a very critical question.

If the murder is intended to be the victim, there needs to be a motive. If not... then who.

This question is actually difficult to answer. Liu Jinghui recalled the files he had read and muttered: "The victim is a local, in his 30s, and opened a motorcycle repair shop. The business is not bad. There is only a cousin helping in the shop, and his wife takes care of the children. They came to help with the checkout and tidy up the store, and they all said they didn’t offend anyone..."

Captain Han listened in silence. From these words alone, it can be seen that when Liu Jinghui said, "Every possibility has been ruled out...", he really wasn't just talking nonsense. He had really considered it. of this question.

There were only four people in the conference room in the morning, and it happened to be a good time to exchange opinions. Liu Jinghui did not have too many scruples, and then said: "If the victim is the target, then everything is easily explained. The murderer achieved his goal. , naturally there is no need to continue to explode. The explosives are placed at the station, which is also the only way from the motorcycle repair shop to the victim’s home..."

Liu Jinghui listed several possibilities and said: "The investigation in the past few days was not wasted. We proved that there have been no similar explosions in the past few years, and the same kind of gunpowder has not reappeared. This can support the murderer's purpose." To reach this point…”

Liu Jinghui said with a slightly excited look, but Captain Han's face showed no emotion at all.

"Old Han, what did you say?" Liu Jinghui needed some feedback.

Captain Han said slowly: "If the victim is targeted, it has actually been investigated and there is no motive. The victim's wife has no relevant technical background, the relationship between the two is harmonious, and there is no financial urge to kill her husband. , the two of them had just had a child for two years, and the same was true for the victim’s cousin. He was originally learning skills and was going to graduate in half a year. Now he has returned to the countryside and has to start over again..."

“What about the motorcycle shop itself?”

"The motorcycle shop 8 years ago is not the motorcycle shop 18 years ago. It was a small workshop, mainly repairing cars, and all the money earned was hard-earned money and handmade money. After the victim's motorcycle shop closed down , it went bankrupt, and the landlord also suffered a loss. It took a long time for the house to be rented out, and no similar store opened nearby. "

"If you want to open a car repair shop, you should open a car repair shop," said Mu Zhiyang.

"That's right, it actually doesn't cost much more to open a car repair shop than a motorcycle repair shop."

"Maybe it's a deeper emotion." Liu Jinghui guessed.

Emotions and interests are the factors most likely to cause disputes and murder. A little bit of trivia: Although modern people always feel that human relationships are indifferent and that everything in the world is about money, with the development of the economy and the increase in per capita income, the main reason why Chinese people kill people has long since shifted from seeking money to emotional entanglements.

At least when it comes to murder, everyone still values ​​friendship more than money. It is true that there is love and justice.

Captain Han looked at the list on the A4 paper at hand. He had no direction now, so he could only follow Liu Jinghui's guess, but...

"Are we going to investigate based on the motive?" Captain Han asked: "In fact, we have already conducted a detailed investigation. Including the victim's relationship in Qu'an County and his relationship in his hometown in the countryside..."

"I think this is possible." Liu Jinghui looked at Jiang Yuan and said, "If we collect the footprints of all the victim's interpersonal relationships, can we compare them with the footprints at the scene?"

Jiang Yuan nodded without hesitation: "Of course it doesn't matter."

This is not too difficult, the only problem is that there are too many footprints on site.

However, Jiang Yuan immediately understood Liu Jinghui's thinking. Explosions are different from ordinary passion murders in that they are carefully arranged.

Therefore, the murderer definitely stayed at the explosion site for a long time, and it is very possible to leave footprints. Even if he wears foot gloves, etc., it can still be easily seen - of course, there are no such obvious disguised footprints at the scene, but if all the footprints at the scene are picked up...

Considering that the explosion center radius is 20 meters, and it is a bus station where people come and go, the number of footprints involved is estimated to be very large, but it is indeed one of the feasible options, not to mention there is a comparison object.

Of course, this many-to-many footprint comparison is still very challenging.

The previous special team did not adopt this plan, and there is a high probability that it will not be realized. Many versus one is relatively easy to do, many versus many, very many versus very many, it is a bit difficult to ensure the success rate, even for Jiang Yuan.

The identification of LV3's footprints is probably beyond our capabilities.

At this time, Jiang Yuan thought of the second-class merit he had just obtained.

Jiang Yuan found it meaningless to exchange second-class power for an explosive skill. There were too few such incidents. Even if he traveled across the country, he would probably collide with various experts.

But the footprint skill is different.

Jiang Yuan called out the system and upgraded his footprint analysis skills on the spot——

Footprint Analysis (LV5)

Because it is a relatively minor item, the level it rises to is still very high. As for the LV5 level, it is not only first-class, but at least the top level in the country. It is estimated that very few people can reach it.

Jiang Yuansheng has no burden on this skill. The footprints are used too much. Even if the original eucalyptus is not used, it is not a waste to upgrade it.

"I need to find a few more computers and monitors..." Jiang Yuan had never done a multi-to-many operation of this scale, and he was also trying to make a request.

Captain Han naturally agreed. The meat had been fed, so there was no need to be stingy about serving a bowl of soup.

Liu Jinghui was a little happy. This was an important moment to verify his own ideas. The so-called "there is only one truth" reasoning was actually not realized in his reasoning career.

Most criminals don't need this trick to be finished. The stories imagined by writers of mystery novels are mostly based on perfect premises, but in fact, unless the case is particularly simple, the more complicated the case, the greater the possibility of leaving traces.

Like this case, this idea can also be used to analyze.

If it is an explosion case targeting an unspecified number of people, the murderer can just put down the explosive and leave. This case is a rough antisocial explosion case that uses sophisticated explosives.

But if it is converted into a murder case, this case becomes a sophisticated explosion murder case that uses sophisticated explosives and cleverly calculates the time.

In this way, the murderer would have spent a lot of time in the vicinity. It is basically impossible for him to arrive nearby, place the explosives and leave. He must make some calculations, and he may have to wait and observe in advance.

The four people seemed to be more excited. Captain Han immediately picked up the phone, and with red eyes, he began to arrange for people to send more computers and monitors. Of course, there were also IT personnel who could install them.

After 9 o'clock, a conference room next to it was vacated and installed with a large number of monitors, computers and printers.

"Leave a few people who work on computers, and then sort out these footprints and number them. Don't miss any." Jiang Yuan also pulled all the members of his team over.

Wang Chuanxing and others are all young criminal police with high education. At this time, they gathered together and began to put up the footprints taken from the scene.

The special case team during the current case has already sorted out the footprints. There are more than 20,000 footprints that can be used for identification, belonging to more than 4,000 people.

Among them, there are footprints within the explosion radius, footprints outside the explosion radius, and some more obvious footprints at the entrance and exit of the station...

As for the footprints of the victim's relatives, several people were collected at the beginning, mainly the victim himself, the victim's wife and the younger brother who helped, as well as several direct relatives of the victim, several neighbors in the village, and several well-known village hooligans...

The special case team was limited by technical reasons at the beginning, which was equivalent to a few against many, and the idea was similar to Liu Jinghui.

This shows that the special case team also had the idea of ​​hanging a bell on the cat at the beginning, and it was probably because the execution mouse's work ability was not good.

Jiang Yuan's LV5 skills, in the mouse world, must be the first level of innate mouse.

Hanging a bell on the cat is difficult, but it is not completely impossible.

Captain Han even sent a team of people to collect footprints of various relatives, friends, and stakeholders around the victim.

To be honest, these criminal police are actually not good at their job. Footprints are different from fingerprints. They change with people. There are some things that remain unchanged, but there are more things that change.

But they don't understand, so they don't ask too much.

Jiang Yuan knows his stuff, but he has just upgraded to LV5 skills. It's time to be proud of himself. Instead, he is quite confident that he can recognize footprints that have been there for eight years.

Indistinctly, the matter of letting the mouse hang a bell on the cat is about to become letting the mouse impregnate the cat, but the mouse who is doing it doesn't say anything, so the other mice naturally have no way of knowing.

Another two days of busy time.

Just after Jiang Yuan adapted to the LV5 footprint analysis, a senior police chief from the provincial department quietly came to Qu'an County.

Qiu Yue - the person in charge of the special case team of the Qu'an Railway Station explosion case.