Jiang Hao presented a series of criminal evidence, each piece of evidence was enough to confirm the evidence he proposed. The police officer in charge of criminal investigation had long been shocked by Jiang Hao's wit, and stood up with excitement, and volunteered to the director of Link, saying, "Let me arrest people directly and then conduct interrogation."

"Your task today is to listen to the class and learn the skills of solving cases. If you arrest someone, you will be able to listen to the class with peace of mind. When the person is arrested and the interrogation is concluded, I will notify you." Link said to the criminal investigator who was about to go out.

This is not the first time that Link has cooperated with Jiang Hao. He has already known that some people are ready for arrest. After Jiang Hao announced the result, he did not wait for Jiang Hao to give a reasonable explanation to the suspect, because he believed that Jiang Hao's judgment had already sent a message to someone to arrest him. He believed that it would not take long before the murderer would be arrested and began to interrogate. Now he only needs to wait patiently for the interrogation result.

"good."

The detective who was about to leave did not expect that Link had already been prepared, and he himself was unwilling to leave at this time. After all, there was a rare opportunity to learn the skills of solving cases, so he naturally had to cherish it. He reached out to take out the notebook he carried with him, recording what Jiang Hao had just explained.

There are quite a few who have the same actions as the criminal police. They all pay attention to the notes carefully and make it easy to take them out and review them later.

"Everyone is listening attentively today. I have someone who has recorded it from the beginning. I will pass on one copy to you and then discuss it at a meeting. Don't take notes, and listen carefully."

Link said to the police officers who were busy recording in an orderly tone.

Link could see that the police officers who were busy recording were summarizing from the bottom of their hearts, which made him very pleased. It was worth my hard work!

“We conduct the second case analysis.”

When Jiang Hao saw the policemen in the audience straightened their bodies and sat meticulously, prepared to listen, and continued to speak: "What I want to leave to everyone for the second case is to solve the case from a psychological perspective.

The criminal's psychology is very complicated, but if you carefully observe and study, you can find out some similarities.

For example, in the second case, this case is also a murder case, and also a murder case of robbery and murder.

Analyzing clues and residual traces, comparing fingerprints has no gains. Our China fingerprint system is still in the stage of establishment. If you continue to search like this endlessly and want to gain something, unless the criminal leaves a fingerprint when he commits a crime next time, using it as a surprise port.

But if a criminal is free for a minute, he will threaten his personal safety, but he is suffering from the lack of clues. At this time, you might as well imagine the criminal's psychology.

As a criminal, even a criminal who kills people will be afraid after killing people, fear whether he leaves clues, fear of the progress of the case, whether the crime process has been discovered...

The easiest and most direct way for people to eliminate fear is to face it. According to research on criminal psychology, most criminals will appear near the scene in the early stages after the crime, because they can quickly obtain the progress of the case near the scene so that they can decide whether to stay or choose to escape.

I checked the photos taken by the police on the scene, carefully compared the photos, and finally locked in a man-made criminal."

Jiang Hao gave the photo to Fang Meng for enlargement.

The content displayed in the photo is a group of people watching the fun. The reason why they took pictures of the crowd was not because the criminal investigation department took pictures without any trouble. There was a bloodstain below the photo. When taking pictures of the bloodstain, they accidentally included the good people.

Jiang Hao's hand was pointing at a man in a black jacket, unshaven beard and thin in the photo. The man raised his neck, just like the onlookers, and was very curious about the police who were collecting clues.

"Why did you lock him?"

Someone in the audience raised questions. There were roughly twenty or thirty heads in the photo. They couldn't figure out why Jiang Hao locked in the man in a black jacket.

"observe."

Jiang Hao spit out two words in a simple way, pointing to most of the people in the photo and said: "The deceased was discovered in the morning, and it was another Sunday. People who had been busy for a week were probably sleeping in bed at this time. The sudden sound of police cars naturally attracted people.

But most of you wear looser home clothes, and some even wear pajamas, which shows that they all come from their own homes.

Let me ask, would that prisoner steal things in his pajamas? The only exception in the photo is this black armored man. You see, he is dressed very well. This alone can select him to check the criminals at the scene.

But this point alone is not enough to judge. If you look at his shoes carefully, you will see that the surface of his shoes is stained with yellow paint, which is exactly the same as the paint on the outside walls of the murdered house. In the entire community, only the walls outside the murdered house are yellow. When you check the deceased's house, you will find that someone did enter through the window, which further shows that he has a big problem.

After taking a closer look at his hand movements, his hands crossed hard, his eyes were anxious, and there were obvious sweat stains on his head, which proved that he was very nervous at the moment, which confirmed that he was guilty of being a thief.

Besides, he is definitely not a resident of this high-end community. If you look carefully at the watches he is wearing on his wrist, it is obviously a copycat stall. The shoes are marked very similar to the brand marks. Unfortunately, one more is added. Comparing the accessories of everyone around him, his clothes are definitely shabby.

Why does a person in ordinary clothes appear in a high-end community for no reason? Isn’t this worth thinking about?”

Jiang Hao is like a master of proficient techniques, leading everyone to step by step, and start from the details to achieve the final answer to the mystery.

“It’s incredible.”

The policemen below changed their expressions, staring at the enlarged photos like wood, and they all seemed to be stupid. After Jiang Hao's reminder, they felt that the man in a black jacket in the photo was more and more suspicious. They admired Jiang Hao's observation very much, and secretly sighed, why did they not pay attention to the crowd after seeing the photos?

However, everyone believed that even if they really noticed the crowd, they would not have too much suspicion, because they would never have thought that the thief who killed people would come back and check it out again. This is not in common sense, but it is very consistent with the hearts of criminals. In the past, when they have been to explain their experiences after killing, they will talk about the fact that they have been to the scene to see the police solve the case.

But the key is that no one would have thought that this would be possible to solve the case!

"Incredible does not mean that he does not exist. Solving a case means boldly conceiving and carefully verifying it, so that you can get rid of the fog by leaving the false and leaving the truth and clear the truth. The truth is revealed."

Jiang Hao said calmly.

"Um."

The policemen in the audience nodded fiercely with deep understanding. Jiang Hao's summary was very short, but every sentence was incisive. Everyone remembered Jiang Hao's words firmly in their hearts.

I am also particularly looking forward to being able to catch the person in the photo as soon as possible to see if he is a murderer. To be honest, everyone has already agreed with Jiang Hao's speculation. With so much evidence in front of me, no one will be suspicious.

"Since I'm talking about removing false and keeping the truth, I'll analyze the third case for you, that is, to find useful clues and overlooked parts from the interrogation and confession."

Jiang Hao changed his tone and turned his attention to the third file: "The interrogation data of this document shows that the death obtained by the deceased after dissection was caused by allergic death caused by recurrence of heart disease.

The reason why the case has been kept is because the mother of the deceased suspected that the daughter was murdered by the woman married by the ex-husband. However, after the police interrogation, the result showed that when the deceased died, the deceased stepmother had evidence of being absent, so the case was stuck and could not be solved.

I have to say that the woman’s intuition is really accurate. The deceased was indeed killed by her stepmother. The police couldn’t break it out because her stepmother was a little smarter."

“Where did you see it from the testimony?”

The police officers responsible for handling this case were immediately energetic. They remembered the case deeply because the mother of the deceased had been checking that the woman was killed by her stepmother. For this reason, she came to the police station several times, which made the case impossible to settle.

If Jiang Hao really found the murderer, it would really make the deceased's mother stop making trouble and give the deceased justice.

"The testimony shows that the deceased's stepmother confessed that he went to buy perfume, and the other party's invoice was proof of her innocence and the perfume shop clerk as evidence to prove her innocent.

But the vicious stepmother deliberately omitted a paragraph, that is, the perfume he purchased needs to be reserved in advance. When she booked in advance, she would pass by a flower shop, and the flowers sold in this flower shop were of a wide variety, and the flowers that the deceased liked were booked in the store.

I believe that when he was booking the perfume, he put the prepared colorless, odorless and volatile drugs into the flowers her daughter liked.

After someone buys flowers with medicine, they will not have any reaction because others will not be allergic to certain substances.

But once the flowers are bought on time, the daughter asked, and the consequences will be death!

Once the volatile drugs are evaporated, they will disappear without a trace, and the police will not be able to find them even if they check them.

Just finding evidence that he had purchased irritating drugs is enough to form a chain of evidence to prove his criminal facts.”

Jiang Hao's voice was cold and astringent. People's hearts were the most sinister and unpredictable. In order to get what they wanted and satisfy their desires, many people did not hesitate to plunder other people's lives at the cost of plundering others' lives, which was sad and lamentable. Since they met, let yourself give the deceased a fairness!

"So that's how it is."
Chapter completed!