The professional quality of the male protagonist

Aman felt baffled by Li Yancheng's sudden call to ask him to investigate this matter.

But Li Yancheng always has his own reasons for doing things, so Aman immediately went to investigate what Li Yancheng said, and then he reported a number to Li Yancheng.

After getting the number, Li Yancheng didn't say anything more, but hung up the phone.

At the same time, Li Yancheng started to rush back.

Zhang Xuan and the others have made no new progress since they entered the predicament. Although they tried to open the mouth of the couple many times, they failed in the end.

The only remaining clue is the bottle of meth. If you want to find more clues, you have to follow this clue.

In desperation, Zhang Xuan even thought about sending some hounds over to search from house to house.

But this plan could not be carried out, because Li Yancheng came back two days later.

After Li Yancheng came back, Zhang Xuan immediately told Li Yancheng what happened, but the latter didn't comment on it, but went to the autopsy room where Aman was.

After receiving the appraisal made by Aman according to his requirements, Li Yancheng went to the interrogation room with the bottle of meth.

The couple have been temporarily detained as they are now suspects.

Ever since Zhang Xuan began to doubt them, the two of them have been insisting on not speaking, unwilling to say a word.

When Li Yancheng saw them again, their faces were a little uglier than before, but the overall mental state was not too bad.

The door of the interrogation room was pushed open, and the two of them were not surprised when they saw Li Yancheng and Zhang Xuan walking in.

During this period of time, Zhang Xuan came in and out of here frequently, and they were even numb.

Every time Zhang Xuan would come with a bunch of materials, and there were different escorts around him, hoping to pry their mouths open.

But this time Zhang Xuan was not the main interrogator, but accompanied Li Yancheng.

Sitting down in front of the two of them, Li Yancheng directly put the pesticide he got from Aman on the table, along with the certificate of identification.

"This bottle was found in Gu Dumb's house in the pesticide market. The composition of the medicine is exactly the same as the drug that Gu Duba possessed, which is the kind of drug that poisoned the victim." Li Yancheng said.

His inexplicable sentence made the other party startled, and at the same time, Zhang Xuan was also the one who didn't understand.

Isn't this obvious?Why did Li Yancheng mention it at this time?

"From the fingerprint on this bottle, the fingerprints identified by the forensic expert are ancient dumb, but only his." Li Yancheng said again.

At this moment, apart from Zhang Xuan in the interrogation room, there were several people standing outside the interrogation room.

Xie Wenyuan and others stood outside the interrogation room and looked at Li Yancheng, not understanding what he was trying to do.

However, there are also those who respond quickly. Ye Kai and Zhang Xuan reacted almost instantly.

The two said almost in unison: "It's the same as the water tank?"

It's just that Zhang Xuan was inside the interrogation room, and the couple heard what he said, but outside the interrogation room, what Ye Kai said was only heard by people outside.

"What do you mean?" Ye Zhong also asked strangely while the surprised expressions appeared on the faces of the couple.

As the elder brother, Ye Kai glanced at his younger brother helplessly, and had no choice but to explain: "The pesticide is bought from outside, and there is no outer packaging, so there should be many people's fingerprints on the pesticide."

The pesticides came from the wholesale market, passed through the people in the wholesale market, passed through the shops in the market, and finally got into the hands of Gu Dumb.

It's completely unpredictable how many people have passed through the hands, but no matter what the situation is, there should not be only Gu Duba's fingerprints on it.

But if there is cooperation in this matter, what does the case have to do with it?Could it be that the murderer is really a dumb old man, but he has made this couple his stand-in for him because of his suspicions?

If this is really the case, then the ancient mute is too smart, even so smart that it is scary.

Inside the room, Li Yancheng also gave a similar explanation: "There should be fingerprints of many people on the medicine bottle, not only Gu Dumb's fingerprints, and only Gu Dumb's taste can be found, that can only explain Before that, someone moved their hands and feet and wiped off the previous fingerprints on the medicine bottle."

Ignoring the increasingly ugly faces of the couple, Li Yancheng continued: "In this certificate, I asked the forensic doctor to verify whether the production date of the medicine bottle was faked."

After pushing the testimonial in front of the couple, Li Yancheng said again: "According to the clues provided by the people in the wholesale market when the police went to investigate, there are two production dates for this batch of medicines. No., and according to the memory of the store owner at the market, this fact is also proved. The medicine that Gu Duba bought that day was the last bottle of the last batch, so the production date should be earlier than this latest one. "

Zhang Xuan vaguely felt that he had found some clues, but he couldn't tell what it was?

The faces of the two people sitting opposite him were already pale at this moment, and they glared at Li Yancheng fiercely, as if Li Yancheng uttered another word, they would pounce on Li Yancheng and bite Li Yancheng.

But Li Yancheng was not afraid of these two people, but continued to say what he should say.

"But the certificate presented by the forensic doctor proves that the production date of this bottle of medicine is the latest batch, and there is no fraud." Li Yancheng said.

Zhang Xuan immediately turned the corner. He looked at Li Yancheng and the bottle of medicine on the table in surprise, "So we have been at the police station with evidence that you can't find?"

Also surprised were the few people outside the interrogation room, especially the people in Ye Kaiye, who was in charge of finding the medicine, with very subtle expressions.

"When our people went to the market to investigate this case, the shopkeeper recognized the person in the photo as the victim at a glance, but in fact that person is not the victim, but you, right?" Li Yancheng looked at the sitting The man in the house.

The man is about 50 years old now, his face has traces left by the years, he is very old, and even most of the hair on his head is gray.

When he was standing, his back was a little bent, but when he was sitting, he tried to straighten his back as much as possible.

Even if Li Yancheng asked him, he didn't have any intention of bending down.

The other party was very stubborn, but he didn't know that it was because of his habit that Li Yancheng could tell something was wrong from the video at a glance.

Everyone's behavior has its own characteristics, the posture when walking, the posture of hand placement, some people like to walk with their shoulders down and relax their whole body, and some people like to lean forward with their backs straight...

It basically becomes a habit for everyone, almost subconsciously, so most people don't realize it.

But it is precisely because of such subconscious actions that form a habit that many times even the murderer forgets to hide.

When Li Yancheng checked those surveillance videos before, the person he saw was walking with his shoulders slightly slumped, and that posture was the walking style only used by women among husband and wife.

The height may change due to the wrong angle of the surveillance video, but a person's walking posture will not be seen as abnormal because of these, unless the person in the surveillance video at that time is not the person involved.

This is one, and second, almost everyone knows that the victim and this man are father and son, so no one is surprised to see that the two look alike.

But sometimes two people who look alike can easily be misunderstood as the same person.

"You are the one who went to buy pesticides. Although you made a disguise and chose to buy when the shopkeeper was busy opening the shop, you hoped that the other party would not take care of you because he was too busy, but you didn't expect him to see you. , and recognized you at the first sight, although he probably couldn't remember the situation at that time, but he should still remember you after the disguise, so after seeing the photo, he immediately recognized you. I can recognize it." Li Yancheng said.

When Ye Kai and the others went to find out who the shop owner and Ren were, they only got some information, not complete.

The older or younger people in the village did not have photos in the database in time, and the information is very scarce. Before returning, Li Yancheng had already investigated this matter through the Internet, and there was no such man in the local police station. photo.

So on the way back, Li Yancheng didn't come back here right away, but went to the market with the man's photo. Sure enough, just as Li Yancheng expected, the storekeeper insisted that it was this man after seeing the photo.

It's just that if Li Yancheng didn't say it, the store probably wouldn't know that these two photos were of two people, not the same person in two periods.

After saying this, Li Yancheng didn't speak, but looked at the two people opposite to deduce their thoughts from their expressions.

In fact, what they think is not important now, because the evidence is basically in front of them, and the facts have already explained everything.

Faced with such a result, the couple remained silent.

But Li Yancheng could tell that there seemed to be a sense of relief in the eyes of the two of them.

After that, Li Yancheng sat in the interrogation room for a while, but in the end the two of them didn't say anything.

Later, after Li Yancheng went out, Zhang Xuan asked someone to put the two people in prison, but neither of them made a sound.

After Li Yancheng came out of the interrogation room, he ran into two middle-aged men, a man and a woman. The dumb parents rushed over when they saw Li Yancheng outside the door, and thanked Li Yancheng excitedly and incoherently.

Gu Dumb is used as a stand-in. Although he is now judged as an attempted murder, he still makes mistakes so he will go to jail next.

However, compared with the legal punishment for a successful murder, it is considered to be much lighter.

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