National Forensic Doctor

"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 was obvious 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 less than two years. The same was true for the victim’s cousin. He was originally learning skills from the apprenticeship, but he left the profession 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 most likely factors to cause disputes and murder. A piece of trivia: Although modern people always feel that human relationships are indifferent and 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 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, monitors..." Jiang Yuan had never done many-to-many on this scale, so he also tried to make requests.

Captain Han naturally responded with all his strength. He had already fed the meat, 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 thinking. The so-called "there is only one truth" reasoning had never been realized in his reasoning career.

Most criminals are finished without this trick at all. The stories conceived by writers of mystery novels are mostly based on perfect premises. But in fact, unless the crime is particularly simple, the more complex the crime, the more complex the crime. pieces, the greater the likelihood of leaving traces.

For example, the current eucalyptus can also be analyzed using this idea.

If it is an explosion targeting an unspecified number of people, the murderer can put down the explosives and leave. This bomb is a crude anti-social bomb that uses sophisticated explosives.

But if it is converted into a murder tactic, it becomes a murder tactic using sophisticated explosives, cleverly calculating time, and ingenious explosions.

In this way, the murderer will spend a lot of time nearby. It is basically impossible to arrive nearby, put down the explosives and leave. You have to do some calculations. If possible, you have to wait in advance, observe, etc.

The four of them seemed a little more excited. Captain Han immediately picked up the phone and with red eyes started arranging for more computers and monitors to be sent over. Of course, there were also IT staff who knew how to install them.

At around 9 o'clock, a nearby conference room was vacated and numerous monitors, computers and printers were installed.

"The people who work on computers will keep a few of them, and then sort out the footprints and number them. They must not be missed." Jiang Yuan also pulled the members of his team over.

Wang Chuanxing and others were all young criminal police officers with high academic qualifications. They got together and began to put up the footprints that were taken from the scene.

During the discovery period, the special team has already sorted out the footprints. There are more than 20,000 footprints that can be used for identification, and they belong to more than 4,000 people.

Among them, there are footprints within the explosion radius, there are also footprints in the outer circle of the explosion range, and there are also some more obvious footprints at the entrance and exit of the station...

As for the footprints of the victim's relatives, we initially collected the footprints of several people, mainly those of the victim himself, the victim's wife and his helping brother, as well as several of the victim's immediate family members, several neighbors in the village, and several famous people. A village gangster with a surname...

The special team was limited by technical reasons at the beginning, so it was equivalent to a wave of few versus many. The idea was similar to Liu Jinghui's.

This shows that the special team also had the idea of ​​​​hanging a bell on the cat. It is most likely that the execution of the mouse is not good enough.

Jiang Yuan's LV5 skills would be at the level of an innate rat in the rat world.

Although it is difficult to hang a bell on a cat, it is not impossible.

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

To put it bluntly, these criminal police officers are actually ignorant. Footprints are different from fingerprints. They change as a person changes. There are some things that remain unchanged, but there are more places that change.

But they don’t understand, so they won’t ask more questions.

Jiang Yuan is knowledgeable, but he has newly improved the skill of LV5, which is the time when he is very satisfied. On the contrary, he is quite confident and can identify the footprints that have lasted eight years.

Vaguely, asking the mouse to hang a bell on the cat was about to turn into asking the mouse to impregnate the cat, but the mouse who performed it remained silent, so the other mice naturally had no way of knowing.

It’s been another busy two days.

Just after Jiang Yuan got used to LV5's footprint analysis, a senior police sergeant from the provincial department quietly came to Qu'an County.

Qiu Yue——He was the person in charge of the Qu'an Station explosion team.