Speaking of which, Wang Zixian is younger than Xie Jingchen.

After her younger brother Wang Zimu disappeared, Wang Zixian determined to be a police officer, so she went to the police academy after graduating from junior high school. After graduating from the police academy for five years, she became a police officer.

After only a few years as a police officer, he was promoted to the rank of detachment leader because he was the first to do anything and made several meritorious deeds.

"She is Cha RL's informant?" Wang Zixian was startled, lowered her voice, and pulled Xie Jingchen into a corner.

"Informant? Undercover? As far as I know, we have never succeeded in placing undercover agents in RL, right?"

"It's not planted..." Xie Jingchen didn't know how to explain to Wang Zixian for a while, "Let's solve the cases at hand first, and these cases are inseparable from RL, otherwise we wouldn't be allowed to be the task force.

After these are investigated clearly, I will tell you about other clues later."

Wang Zixian looked at him deeply, then nodded, agreeing.

Two armed police officers were transferred from the bureau to protect Fang Ling. Then Xie Jingchen and Wang Zixian separated. One went to the scene where Fang Ling was murdered, and the other went to the previous crime scene to check again.

Some murderers will return to the scene after committing a crime.

This situation is usually due to two psychological reasons. One is wanting to return to the scene to confirm whether one has left any key clues related to oneself. The other is wanting to observe the impact of one's actions on society and obtain a kind of perverted satisfaction.

feel.

Usually, the two kinds of psychology work at the same time, just like people always like to look for excitement, but are afraid after the excitement is over. It's just that the "stimulation" sought by criminals is more harmful to society.

The police guard the crime scene to prevent clues at the scene from being destroyed.

If the murderer returns to the scene and finds that Fang Ling is not dead, he will most likely attack again.

This kind of person who goes there specifically for the purpose of causing death has a high probability of being a vendetta. Moreover, when questioning Fang Ling, her attitude also showed that there is a 99% chance of it being a vendetta.

Xie Jingchen remembered that An Ruqiao said that Zhou Yang wanted to "pick out" Fang Ling, saying that the mysterious man who controlled the entire drug industry chain had something that could kill Fang Ling.

Fang Ling's secretive attitude...does it mean that the "enemy" she thinks of may be related to the bad things she did in the past?

On the way to Fang Ling's house, Xie Jingchen analyzed the clues one by one.

Feng Guanghua's secret was leaked before her death. She found out about Lin Ruirui's death without notifying the police.

Xie Jingchen made a hypothesis, if the murderer who killed Feng Guanghua, Pei Chengjing, Lin Ruirui, Zhou Yang and the murderer who tried to kill Fang Ling were the same person...

What do these victims have in common?

Why did the murderer kill them?

First find common ground. Pei Chengjing, Lin Ruirui, Zhou Yang and Fang Ling are all related to K City Pharmaceutical University. Feng Guanghua is Pei Chengjing’s wife. She did not graduate from Pharmaceutical University and does not work at Pharmaceutical University. However, because of Pei Chengjing’s

The relationship can barely be considered to be related to K City Pharmaceutical University.

If the key thing the victims have in common is the Pharmaceutical University, the murderer is most likely from the Pharmaceutical University, and he knows all the victims and has a grudge.

According to the current known conditions, one of the suspects who are known to these victims is Su Ye and the other is Li/Peng.

Judging from the clues collected in various cases, the murderer, or one of the murderers, is a man between 175-185 cm tall. Both Su Ye and Li/Peng meet this characteristic, but they are not what Fang Ling said.

Plant a "unibrow".

It can be said that Li/Peng had a grudge against Zhou Yang and had a motive for killing Fang Ling, but he did not seem to have any grudge against Pei Chengjing's family.

Xie Jingchen checked Li/Peng's chat history on various social software, as well as phone calls and text messages. Li/Peng and Lin Ruirui were in an ordinary lover's relationship, having an extramarital affair, one having sex and the other paying.jj.br

As for Pei Chengjing and his wife, the biggest intersection between Li/Peng and them was when the instructor of the innovative project they worked on when they were in school filled in Pei Chengjing’s name. After graduation, Li/Peng never contacted Pei Chengjing and his wife again.

Judging from the time of the crime, Li/Peng was under the nose of the police when Zhou Yang was killed, Li/Peng was with his son in the hospital when Feng Guanghua died and Fang Ling was attacked, and when Pei Chengjing and Lin Ruirui died, Li/Peng

Peng is on a business trip.

If it is said to be a purchase/murder, it is possible in terms of time, but when checking the flow of Li/Peng's funds, nothing unusual was found.

Li/Peng's suspicion is very small and can be ruled out for the time being.

The other suspect, Su Ye, is more suspected.

Su Ye had an alibi when Zhou Yang and Feng Guanghua died. Laboratory records show that Su Ye stayed in the laboratory for those few days and never came out.

However, the possibility of Su Ye killing Lin Ruirui and Pei Chengjing cannot be ruled out.

According to An Ruqiao, Su Ye is Fang Ling's upline, and Su Ye left a large number of fingerprints at Professor Pei Chengjing's home. He is particularly familiar with Pei Chengjing's home and also has the key to Professor Pei Chengjing's home.

The most important thing is that Su Ye had a lot of contact with Professor Pei Chengjing during his lifetime. He was deeply trusted by Professor Pei and had the opportunity to harm Professor Pei's death. He also had the conditions to forge Professor Pei's phone call home.

According to the clues provided by An Ruqiao, Professor Pei Chengjing guided Zhou Yang to join RL, so Professor Pei Chengjing may also have guided Su Ye to join RL.

At the same time, drugs used for profit in the drug industry chain, such as Zhuantai Pills and beauty drugs, were all developed and improved by Professor Pei.

Su Ye has completely inherited Professor Pei's mantle, and is better than others in drug research. If there is a conflict of interest, Su Ye does have the motive to kill Pei Chengjing.

Here we must mention another thing the victims have in common, that is, they are all related to the drug industry chain.

Pei Chengjing is a key figure in the drug industry chain and the developer of drugs.

Zhou Yang participated in the research and development and distribution of "Zhuantai Pill" in the drug industry chain many years ago, and now also knows about the drug in the beauty shop, covering for Fang Ling.

In the pharmaceutical industry chain, Fang Ling is responsible for using beauty shops to contact customers and sell the "latest beauty products" and supporting injections.

Lin Ruirui has a large amount of capital inflow records. Judging from Lin Ruirui's express delivery and receipt, as well as the investigation of Lin Ruirui's residence, it is very likely that Lin Ruirui is also a seller of drugs.

Feng Guanghua is Professor Pei's legal wife. The two have been married for more than 20 years, and it is very likely that she also knows about the drugs developed by Professor Pei.

Among the known people who may be related to the drug industry chain, except Su Ye, all others are either dead or injured. From the common point of "related to the drug industry chain", Su Ye is either the murderer or,

He is the next victim.

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