1. There were at least three people at the scene of Yang Wenjing's murder - Yang Wenjing, Yang Yutang, and unknown person A.

2. Yang Wenjing was killed by an unknown person A (or died in an unknown accident).

3. Based on the inference of the time of Yang Yutang's appearance, it is basically certain that he was only responsible for the aftermath, that is, to deal with the body of Yang Wenjing who was killed.

Staring at the three points he had written on the paper, Ling Zhan thought for a while, picked up the pen and crossed out the content in parentheses after the second point, and then wrote down the words "motive for killing". After careful consideration, he decisively wrote four words: kill people and kill mouths.

You must know that with Yang Wenjing's special status, it is not easy for anyone to make the decision to put Yang Wenjing to death - because it will be a great risk.

Therefore, unless things have developed to the point where he has to put himself at risk, it is impossible for Unknown Person A to make the decision to "kill people and kill people".

In particular, when Ling Zhan analyzed the personal information about Yang Wenjing collected by the Serious Crime Team before, after completely ruling out the two possibilities of love murder and vendetta, and then listed in the third point - as the chairman of Dousheng Group, Yang Yutang, who is worth billions, came forward to deal with the aftermath This can completely rule out the possibility of murder for money. Then, there is only one conclusion that Ling Zhan can draw - the purpose of killing people is to cover up the true identity of the suspect.

Who is so mysterious that he even has to take a great risk to kill Yang Wenjing to cover it up?

As a result, the identity of the unknown person A suddenly became the most critical part of Yang Wenjing's murder case.

It's just that the clues about the identity of the unknown person A that the serious crime team has at present are basically blank. What Ling Zhan can sum up is only the following four characteristics: one is that he is qualified to instruct Yang Yutang, chairman of the Dousheng Group; second, Yang Yutang must obey his orders and know his existence, but he cannot be sure that Yang Yutang knows him; and third, A's true identity is extraordinary, and it is so special that no one can know about it. The fourth is that Yang Wenjing must know this person, otherwise he will not incur the disaster of killing.

At this point, in view of the existence of the Dongfeng Coating Factory and the Four-Dimensional Research Institute, and in view of the key breakthroughs in stealth technology of the relevant countries mastered by the Four-Dimensional Research Institute, as far as Ling Zhan knows, the few countries with bad intentions in the world have not only fixed their eyes on Jiangjun City, but have even sent countless spies through various channels to come to the news. In addition, the reason why he himself was transferred here from the provincial department was precisely because of this, that is, to strengthen the criminal investigation force of the Jiangjun City Public Security Bureau.

Therefore, Ling Zhan wrote "A's identity" after the first article, and drew a bar after it, adding the word "spy".

Other than that, Ling Zhan couldn't find any other more reasonable explanation.

As for the third one, there is no need to think about it. has been analyzed above, even if Yang Yutang doesn't know A, he must know his existence. Moreover, for various reasons that are not yet known, Yang Yutang is subject to A, that is, he has to follow A's instructions.

Immediately, Ling Zhan changed a blank sheet of paper, rewrote the three points originally listed, and added the results of the analysis just now after each one.

1. There were at least three people at the scene of Yang Wenjing's murder - Yang Wenjing, Yang Yutang, and unknown person A. A's identity is a spy.

2. Yang Wenjing was killed by an unknown person A. Motive for killing - extinguishing the mouth.

3. Based on the inference from the time of Yang Yutang's appearance, it is basically certain that he was only responsible for the aftermath, that is, to dispose of the body of the victim Yang Wenjing. The relationship between Yang Yutang and A - at least he knows the existence of A and must follow A's instructions.

After the above three prerequisites are determined, it is time for Ling Zhan to suspect the existence of the "fourth possibility" hypothesis. That is, the bank card used by Zhou Wei, an antique dealer who was killed in a car accident that was carefully designed, appeared in Yang Wenjing's case in order to deliberately mislead the direction of the investigation of the serious crime team.

According to this line of reasoning, the intention of the unknown character A is already extremely obvious - to mislead the serious crime team to gradually shift their attention to Yang Yuting, so as to get himself out of the huge risk of killing Yang Wenjing.

This plan of Unknown Person A has proven to be very successful so far. The reason why this is so is because A first took advantage of the favorable condition of pulling Yang Yutang into Yang Wenjing's case.

After all, Yang Yutang and Yang Yuting are brothers. Yang Yutang's fortune history is very consistent with the time when Yang Yuting returned to China, according to common sense analysis, anyone will think that Yang Yutang's fortune is inseparable from Yang Yuting.

Therefore, A succeeded in creating a logical illusion: after Yang Yuting killed Yang Wenjing, he instructed Yang Yutang, who was both his brother and received a lot of favors, to deal with Yang Wenjing's body.

Secondly, he deliberately used the bank card of Zhou Wei, an antique dealer who was murdered to death, and arranged for a person of the same age as Yang Yuting, and even some similarity in size and appearance to order food for Yang Wenjing. This further made the serious crime team suspect Yang Yuting.

At the same time, he also took advantage of Yang Yuting's lying about the time he had returned from Hainan, and the intimate relationship between Yang Yuting and Yang Wenjing, including Yang Yuting's whereabouts that had appeared near the Jinghua Community on August 10, the day before Yang Wenjing was killed, and other favorable conditions, further made the serious crime team go further and further in the wrong direction of investigation.

Even, the unknown person A also made full use of the fact that Yang Yuting had already become the focus of the National Security Bureau, and the most favorable condition was from a foreign spy organization.

Analyzing this, Ling Zhan couldn't help but gasp.

This person is too dangerous, not only because of his (her) scheming, but also because A is almost familiar with the work of the current serious crime team, including Yang Yuting's personal situation and movements, and the criminal behavior of Yang Yutang and his Dousheng Group.

In order to calm the shock in his heart, Ling Zhan got up and went to the water dispenser to pick up a glass of cold water, and drank it with a bang. After a long time, he continued to try to use the fourth possibility to explain some of the doubts in Yang Wenjing's case.

First, why did Yang Yutang put Yang Wenjing's body in the triangle garden almost in the center of the city.

If the hypothetical existence of the fourth possibility is correct, then it is well explained. It is neither panicked nor deliberately provoking anyone, just to attract the attention of the serious crime team as soon as possible and fully, so that Yang Yutang can associate Yang Yuting with him.

Second, why did he kill Yang Yutang and hide a laptop containing three evil tattoos made by Yang Yutang, as well as a folder encrypted with hacker-level programs for Yang Yutang's money laundering evidence, in the closet of his villa.

The motive for killing Yang Yutang and destroying his mouth no longer needs to be explained under the premise that the fourth possibility exists. If the unknown character A wants to be alone, it is naturally impossible for Yang Yutang, who knows that he (she) exists and knows that Yang Wenjing died at his own hands, to survive.

The evidence of Yang Yutang's crime stored in the computer can mislead the serious crime team to deviate from the right direction when analyzing the motive for the killing, and only focus on the many suspects who laundered money through Yang Yutang's hands, and the possible revenge of the victims of the three evil tattoo cases against Yang Yutang. What the unknown person A wants to see most is that the serious crime team suspected that after Yang Yutang learned his true identity as a spy, Yang Yuting decisively took the action of killing people.

Third, why did Yang Yutang instruct his nephew Yang Congwen to format the disk of his office computer and destroy all the evidence of the crime.

Indeed, as the serious crime team analyzed before, it was Yang Yutang who sensed the danger. And this danger did not come from anywhere else, but from the unknown person A who instructed him to dispose of Yang Wenjing's body. Because from what happened to Yang Wenjing, Yang Yutang thought that it was very likely to be his fate. Therefore, he may be planning to leave the country as soon as possible to avoid a period of time after destroying all the evidence of the crime.

Fourth, why did the laptop hidden in the closet of Yang Yutang's villa and Yang Wenjing's laptop both use the same hacker-level encryption program.

Because the unknown person A knows Yang Yuting very well and knows that Yang Yuting is a master of computer programming, he wants to take advantage of this and confirm to the police at the same time that Yang Yuting was killed and Yang Yutang was assassinated.

In this way, Ling Zhan analyzed many doubts in the murder of Yang Wenjing, including the assassination of Yang Yutang, on the premise of the fourth possibility, and indeed obtained a more reasonable explanation.

It's just that there are still a few questions that can't be explained.

The first is why A had to make a separate request not to kill Yang Yutang when he hired a murderer to assassinate him.

The second is why there is a double doctor turtle in the laptop hidden in the closet of Yang Yutang's villa, and Zhong Caini's biological sample, which is highly valued by the state.

The third is whether the death of Yang Yutang's current wife Wei Dongdong has anything to do with it.

Fourth, and the biggest suspicion - Zhou Wei died in a car accident on June 16, and Yang Wenjing was killed on August 11, and the difference between the two cases is 567 days, so is Zhou Wei's car accident killed by A?

If so, doesn't that mean that A has long wanted to kill Yang Wenjing? That is to say, Yang Wenjing already knew A's true identity as early as June 16.

If not, how did A get the bank card of the antique dealer Zhou Wei? If he said that he got it by accident, Ling Zhan would not believe anything. After all, one of the keys to making the serious crime team take so many detours is Zhou Wei's bank card. Therefore, there is only one possibility, even if the car accident that caused Zhou Wei's death was not caused by A, the bank card must have been obtained by A's deliberate efforts.

From this, Ling Zhan returned to the original point, that is, the fourth possibility - A used Zhou Wei's bank card to order food for Yang Wenjing, so as to draw the attention of the serious crime team to the case of Zhou Wei's death in a car accident, what is his real intention?