Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

After thinking for a moment, Lu Chuan told Chen Jiang.

"We still need to investigate this clue as soon as possible. Although it is more complicated to investigate, we also have a strategy."

Lu Chuan thought about it and decided to start the investigation from the vicinity of the crime scene.

Judging from the current situation, it is highly likely that the suspect lives and works near the victim's family.

"Chen Jiang, you should use the neighborhood where the victim lives as a base to find out if anyone has bought this black color recently, and ask if anyone thinks there is anything wrong with it."

Lu Chuan continued, "Especially those who bought gloves the day after the incident."

When Lu Chuan added this sentence, Chen Jiang immediately understood what was going on.

This type of gloves is relatively cheap and sold in large quantities. If the suspect wore this type of gloves on the day of the crime, he would definitely be stained with blood when handling the corpse.

Therefore, there is a high probability that the other party threw the gloves at the scene and burned them directly.

This type of gloves is cheap, and if the suspect gets used to wearing them, he will most likely buy a new pair the next day.

"Okay, I understand what you mean. I'll do it right away."

Although Chen Jiang has not been the squadron leader for a particularly long time, he is a veteran as a criminal policeman.

These seemingly simple visits and investigations may actually bring great progress in solving the case.

After a person kills someone, as long as the other person's psychological quality is not particularly strong, then this person will definitely have some reactions that are beneficial to ordinary people within a short period of time.

From a psychological point of view, everyone has the need to talk.

No matter what the reason was, this criminal suspect killed Zhang Haibin's family. From a psychological point of view, whether it was to avenge his great hatred or achieve some other purpose, he had a desire to confide in others.

But this kind of thing cannot be told to others, so what can we do? It will be reflected in some abnormal behaviors.

For example, a person who never drinks will start to drink, or a person who is taciturn will suddenly start to talk a lot.

Either your consumption suddenly increases, or you suddenly buy something that you could never buy or have never bought before.

In short, these external manifestations will be reflected in some language or behaviors that are different from previous life details or habits.

Why is it that some detectives only glance at the same case clues and move on, but others, with rich experience, can find patterns or suspicious points from these tiny changes.

This is exactly the reason.

At the same time, there was new progress in Chen Baoguo's investigation.

Chen Baoguo no longer concealed his relationship with Chen Xue and explained it very clearly.

The two people have actually been together for four or five years.

"Chen Baoguo confessed some information, but he said he didn't do the murder."

Wang Zhaokai drank a glass of water and sat opposite Lu Chuan.

"No one else knows the relationship between Chen Baoguo and Chen Xue. The two met at a dinner party."

What Wang Zhaokai said is what we have learned here.

According to Chen Baoguo's confession, the love between him and Chen Xue was pure.

At that time, Chen Baoguo had not been promoted yet, but he was already working hard for Zhang Haibin's family.

"Everything at home, including eating, drinking, defecating and urinating, and refueling the car, is done by Chen Baoguo."

"After a few visits, the two became familiar with each other. Zhang Haibin also had a lot of social events and was not familiar with the family, so Chen Baoguo and Chen Xue got together."

Wang Zhaokai took out his mobile phone and there was a photo.

"I found something interesting." Wang Zhaokai showed the photos in his mobile phone to Lu Chuan.

"This is something we found in Chen Baoguo's office this morning."

"What the hell?"

There is some black powder in the photo.

"Lead powder!"

Lead powder?

"This thing is called lead powder, but it's not actually metallic lead. It's a powder made from a plant from Chen Baoguo's hometown."

"We learned that it is actually a traditional Chinese medicine, but it is poisonous and can cause serious damage to the liver if consumed for a long time."

Wang Zhaokai continued, "Chen Baoguo is a coward. He thought we were going to link him to the deaths of Zhang Haibin and others, so he was scared and just blurted it out."

In fact, Chen Baoguo had already taken action against Zhang Haibin, but his methods were more covert.

He and Chen Xue had already discussed it and decided to use this method of chronic poisoning to make Zhang Haibin suffer from chronic poisoning.

Chen Baoguo provided Chen Xue with the powder of this Chinese medicinal material.

When Chen Xue was cooking at home, she put these things into the dishes that Zhang Haibin was willing to eat in order to poison him.

"The two of them have been doing this for more than half a year."

Before reporting to Lu Chuan, Wang Zhaokai had already confirmed with the forensic doctor that Zhang Haibin's liver was indeed not in good condition.

However, the forensic department did not conduct independent testing, thinking that he had liver damage caused by long-term irregular lifestyle or excessive drinking.

"From what I can see now, even if Zhang Haibin's family didn't kill him, he probably wouldn't live for many more years."

Lu Chuan didn't expect that Wang Zhaokai's investigation would yield unexpected results in this regard.

But just as Chen Baoguo explained, he had no motive for committing the crime because he wanted to kill Zhang Haibin and had already taken action, but he had no need to kill Chen Xue.

It is even more impossible to kill someone's two children, so from this point of view, Chen Baoguo has no motive for committing the crime.

That morning, after Lu Chuan finished cleaning up, Wang Zhaokai and Chen Jiang’s reports, he went to the branch.

Chen Weiguo has been calling one after another to inquire about the progress of the case, and there has been no rest in the past two days.

Lu Chuan was also extremely worried, but he still had to go and give Chen Weiguo some peace of mind.

Although the case has not made any decisive progress yet, all aspects are moving forward, which means there is hope of solving the case.

When Lu Chuan returned from Chen Weiguo in the afternoon, Sun Biao was already waiting in the office.

"Captain Lu! You're finally back!"

Lu Chuan saw that Sun Biao was very excited: "What's wrong?"

"What did you find?"

Sun Biao went to investigate and found out that Zhang Tao left No. 3 Middle School and transferred to No. 9 Middle School.

Originally, there was just a doubt, and based on the police instinct, Lu Chuan wanted to figure it out, but in fact he didn't care too much about this clue.

But Sun Biao looks so excited now, could it be that he has made some big discovery?
Sun Biao nodded heavily.

"Captain Lu, this time I really discovered that there is a hidden story behind Zhang Tao's transfer. It's not that simple."

Sun Biao didn't take this clue too seriously at the time, he just wanted to figure it out, but after arriving at No. 3 Middle School, he found that some things were not as simple as they seemed. (End of this chapter)