Lao Lu and I visited the supermarket where the third suspect went, and we learned that what the suspect bought at the supermarket was not toilet paper, but a white towel.

I asked the supermarket clerk to find a white towel, I took the towel, frowned, and said to Lao Lu: "If the suspect has a stomachache and goes to the toilet, how can he buy a towel?" So I deduced that the suspect probably bought a towel to go to the toilet to wipe the blood stains on his body, and the reason why he ran with his stomach covered must have been because he stole something from the commissary and put it inside his clothes. ”

Lao Lu said: "Your analysis is very reasonable. It's just that the deceased's mother was so frightened that she has been hospitalized that we can't be sure what exactly was missing from the commissary. In any case, it seems that the third suspect is more likely to have committed the crime. ”

I said, "I can't say that exactly. The behavior of the other two people is also extremely abnormal, and the time when they made these abnormal actions also coincides with the time of the crime. Don't we have the murder weapon of the murderer now? And there are fingerprints on the murder weapon, as long as the fingerprints of the three people are checked, the real murderer will definitely be found. ”

Lao Lu patted me on the shoulder and said lightly: "It seems that this case will be solved soon." ”

I also nodded easily, because the murderer dropped the murder weapon at the scene, and left fingerprints on the murder weapon, which really put him in a very disadvantageous position.

Lao Lu summoned the three of them separately.

The first person to be summoned was the networm, the networm's name is He Zhijun, a native of Baiyang Town, Wanzhou, 23 years old this year, unemployed.

When He Zhijun was summoned, he still experienced some twists and turns. Because just after the incident, He Zhijun, who often lives in the Internet café, actually disappeared, and the owner of the Internet café was also very puzzled about this. Because in his impression, He Zhijun has been stationed like this in his Internet café for more than half a year. The day after the murder occurred in the canteen opposite, he did not come back. Even the owner of the Internet café suspected that the murderer was He Zhijun.

Of course, if the truth of the facts is not the case, we must first find He Zhijun.

The police rushed to Aries Town and easily found He Zhijun. When he caught He Zhijun, he was very panicked, which showed that there must be a ghost in his heart.

However, when He Zhijun was interrogated, he resolutely denied that he had killed someone, but asked him why he did that day and why he behaved like that, but he was hesitant and refused to confess.

We extracted He Zhijun's fingerprints, and after comparison, the fingerprints did not match.

It seems that based on fingerprints, He Zhijun's suspicion of committing the crime can be ruled out.

But I asked if we could consider that he was actually an accomplice, and although he did not commit the murder, he may have been involved in the murder.

Lao Lu agreed with my introduction, so the police still controlled and observed He Zhijun.

The second to be arraigned was the flat-headed man, the man who was sneaky outside the crime scene.

The man's name is Zhang Hualiang, 20 years old, from Longju Town, Wanzhou District.

When Lao Lu asked him why he was sneaking outside the murder scene, he confessed that he had gone to the commissary to buy snacks, but he didn't expect to see a dead person as soon as he entered, so he ran out in fright, so he did those sneaky actions, hoping to see someone enter the commissary, find the murder and call the police.

I was puzzled and asked, "Since you found out about the murder, why didn't you call the police?" ”

Zhang Hualiang lowered his head, tugged at the corner of his clothes with his hand, and refused to say the reason.

There is no way, we can only extract the fingerprints of the suspects for comparison. The results of the comparison are still mismatched.

Lao Lu was very excited at this time, and said to me: "Then this last guy must be the murderer, and his every move is the most likely to commit a crime, especially when he buys a towel to go to the public toilet, it must be to wipe the blood." ”

Although I think so and can't give a more reasonable explanation, I always feel uneasy that this case will not end so easily.

A third suspect was also arraigned. This person can be arraigned, and I feel uneasy. If he killed someone, why didn't he abscond? Either he was too lucky, or he wasn't a murderer.

The suspect was summoned to the criminal investigation team, and this person looked like a fool and seemed to be very dismissive of the police. However, I can see that his disdain is faked, that is, to hide his inner tension and fear.

The murderer's name is Xiong Lian, a native of Wanzhou, 23 years old this year, unemployed.

Xiong Lian's interrogation was very unsmooth, because he refused to explain any questions, and he had a great grievance.

And after the extraction and comparison of fingerprints, it was also found that there was a complete mismatch with his fingerprints.

Could it be that we have made a mistake in our judgment that the murderer is not among these three people at all?

Lao Lu held his head in his hands, lying on his desk, staring at the file on the desktop with his eyes, and did not say a word.

"What went wrong? The only people who can provide abnormal behavior in the surveillance video are these three people, what is wrong? Old Lu muttered to himself.

I sat down on the couch, took a puff of my cigarette and said, "Now there's something that might have misled us." ”

Lao Lu looked at me very incomprehensibly and asked, "What misled us?" ”

I said, "I think it's the fingerprints on the fruit knife." ”

Lao Lu pondered for a while and said, "You mean that the murderer is still among the three of them, but the fingerprints on the fruit knife are not the murderer's." It is impossible for the fingerprints that led to the murderer to match it? ”

I nodded and said, "Yes." We are still not in a position to rule out the suspicion of these three men. Now it seems that finding out the true owner of the fingerprint is the key. ”

Lao Lu pursed his lips and nodded, "Well, in short, I firmly believe that the real murderer is among these three people." You can see that the confessions of these three people are all vague, and I even suspect that the three of them are accomplices. ”

Lao Lu thought for a while and said, "Then who do you think the fingerprints on the fruit knife will be?" Could it be that the murderer deliberately placed it at the scene to create a false impression to mislead us in the direction of detection? ”

I smiled and said, "Comrade Lao Lu, there are not so many criminal masters in this world, and even if there were, they would not do such a case." So the fingerprints, I guess were left by someone who had been to the crime scene, but this person may not be the murderer. Maybe it's the family and friends of the deceased. ”

Lao Lu said: "The family of the deceased? How could they possibly come into contact with the murder weapon? ”

I said: "The more reasonable conjecture is that the murderer may have been wearing gloves when he committed the crime, so only one person's fingerprints were found on the murder weapon." No overlapping fingerprints were found. It's just that after committing the crime, the murderer inadvertently lost the murder weapon when he fled the scene, and even because the murder weapon was stained with blood, he was still on the ground because of fear. Later, when the family of the deceased entered the commissary, they accidentally found blood and knives on the ground, and in horror, they picked up the knives and put them on the shelves, thus leaving fingerprints. ”

After hearing this, Lao Lu said: "By the way, it was the deceased's mother who called the police, and maybe it was her mother who used the murder weapon." ”

I said, "Quite possibly." ”

Lao Lu nodded slightly, shook his head slightly, and said: "The deceased's mother lost her beloved daughter and was overly frightened, which caused a brain thrombosis, and she is still in the intensive care unit, and it is estimated that it will take a few days to come out, and the fingerprint verification work will have to be delayed for a few days." ”

"It doesn't matter, the fingerprint check will not make any progress in the detection of this case, it will only explain the source of the fingerprint," I said. Now that we have analyzed and determined that the murderer is among the three suspects, I naturally have a way to make the real murderer show his fox tail. ”

Lao Lu looked at me with a smile: "You kid, I know you have a lot of ideas." ”

After that, I asked Lao Lu to put a long table in the interrogation room, and then put three soft rubber daggers used by the police for training on the long table, and next to the dagger, put three identical photos, this photo is the fruit knife that killed the deceased, the bloody fruit knife.

At the same time, we made the interrogation room very dark, with only a few lights shining on the table where the dagger was placed and on the suspect. We, the interrogators, are in the dark.

The three suspects were summoned together to the police station and entered the interrogation room together.

Lao Lu said: "Have you seen the dagger on the table? What I want you to do is simple, just hold your dagger. After you have grasped the dagger, the innocent will be able to leave, and the real murderers among you will not escape justice. ”

Just after the three of them held the dagger, I slowly stood up, looked at Xiong Lian and said, "Xiong Lian, you are the real murderer." ”

It can be seen that Xiong Lian's face turned pale, and his body was trembling.

After that, Xiong Lian confessed the facts of his crime.

It turned out that his motive for committing the crime was very simple, that is, because he was short of money recently, so he chose to rob the commissary without installing monitoring.

Because it was the first robbery, in a nervous and frightened state of mind, he dealt a heavy hand to the victim and snatched the victim's handbag. He learned from the TV series that he can't leave fingerprints when committing crimes, so he wears gloves when committing crimes. However, after actually stabbing the victim, he was terrified and left the bloodied fruit knife on the ground.

He snatched the victim's handbag and put it in his clothes in front of his abdomen, hence the shot of us watching him run with his stomach clutched. He went to the supermarket to buy towels and went to the public toilet to wipe the blood from his body.

Afterwards, Lao Lu asked me: "How did you tell that he was the murderer?" ”

I smiled and said, "It's actually quite simple. The real murderer will be very nervous in that environment, the surrounding dark environment, the photos of his murder weapon, and I told you that as long as you touch the dagger, you can find the real murderer. The other two simply picked up the dagger, but he was the only one, twisting and not daring to start. This manifestation of weakness of heart exposes his inner fears and worries. ”

Lao Lu smiled and said, "You are really a thief!" ”

Lao Lu is a conscientious person, and he finally investigated the two objects who had been suspected. Their anomalous behavior at the time of the murder was also unearthed.

He Zhijun turned out to be a habitual thief, he committed more than 30 crimes during that time, and he hid in an Internet café when he committed the crime. This is also the reason why he is sometimes generous and sometimes down, if he can steal, he will have money, and if he can't steal, he will be hungry. And at the time of Wu Jiaxue's murder, he happened to commit a theft nearby.

As for Zhang Hualiang, it is even more absurd. The reason why he didn't dare to call the police was that he lied to his family that he had been admitted to the university and hid in a rental house in the city to cheat on tuition and living expenses. Although he was the first person to arrive at the scene of the crime, he did not dare to call the police for fear that his actions would be exposed. The reason why he acted so strangely was because he was struggling with his conscience at the time. Eventually, evil thoughts triumphed over conscience.

Lamentable!