As Li Ang guessed, the final murderers in this case were the father-in-law and mother-in-law who lived with the deceased.

The father-in-law took advantage of the fact that while his son was out working, he had bad intentions towards the deceased and coerced him many times.

The deceased asked her mother-in-law for help, but the latter maintained a tacit attitude in order to "keep the ugliness of the family from publicizing", and even conspired with her husband to imprison her daughter-in-law.

During an insult, the deceased claimed to tell her husband, who was about to return from work, and her father-in-law and mother-in-law panicked, strangled him, and tried to escape responsibility by pretending to hang himself.

In this process, the two did not dare to look directly at the dead corpse, and deliberately used a cloth to cover their faces.

Looking at the TV show, the two elderly murderers whose faces were mosaiced in the prison with tears streaming down their faces and constantly confessing, Li Ang couldn't help but laugh, "It's so funny these people." ”

"Huh?"

Wang Fengnian cast a questioning look.

Li Ang spread his hands, "I don't think their tears are sincere repentance,

In the process of committing the crime, they have countless opportunities to stop the harm they infringe on their victims.

Did they stop? Not really,

The tears that come down from the criminals who have taken the initiative to commit crimes against innocent people after putting on prison clothes are only remorse for being caught doing evil and fear of the impending punishment.

Scum, always scum. ”

Wang Fengnian nodded noncommittally and asked, "Xiao Li, your reasoning ability is good, I heard Shanshan say that you have seen a lot of detective reasoning before?" ”

Of course, it is impossible for Li Ang to tell the other party that he used Xinhua Bookstore to read a lot of reasoning when he was in junior high school.

Began to use the Internet to study a series of books such as "Forensic Science and Technology", "Criminal Investigation", "Trace Examination", "Investigation Law" and so on (electronic version is available online, and physical version is also available)

He immediately nodded with a smile, "Yes, my dream when I was a child was to become a crime buster, maintain social order, and protect the safety of people's lives and property." ”

"Hmm."

Wang Fengnian nodded, suddenly remembered something, and went back to the study to get some documents.

These documents are all cases received by the Yin City official recently, and all kinds of strange things have happened one after another in recent months, and the grassroots cadres are very busy.

Front-line cadres like Wang Fengnian haven't been home for a long time and have a normal meal with their families.

He took out more than twenty photos from his file bag, "What do you think of these photos?" ”

Li Ang took the photo and found that the crime scene taken in the photo was located in an ordinary residential building.

In the two-bedroom room, the bodies of the male and female protagonists lay on the floor of the living room, with several deep knife wounds on the waist and abdomen, and a large pool of blood accumulated around the corpse.

The doors of the room were opened, and some miscellaneous items were piled on the sofa, and there were no bloody footprints or other blood stains on the floor.

The murder weapon, located in a cramped, lighted-on bathroom, was a steel Western knife with a short handle and a smooth curved blade, soaked in the sink.

Under the light switch box against the wall on the right side of the sink, there is also a string of dripping blood.

Leon looked at the photo and asked without raising his head, "Burglary?" ”

"Yes."

Wang Fengnian nodded, "There is a fire ladder outside the window, and the murderer sneaked into the house at night and murdered the owner of the house in the process of robbery. The position of entry and exit is just located in the blind spot of surveillance, and his appearance was not photographed. ”

"Hmm...."

Leon flicked the photo with his finger and said, "How long has this case been?" ”

"Two days ago."

Li Ang put the photo on the table and said, "I'm not sure, but it is recommended to go to the hospital and clinic near the place where the crime occurred to find the recent admission records.

Check if there is a deep scar on the palm of the right hand. ”

"Oh?"

Wang Fengnian frowned, "Why?" ”

Li Ang spread out the photos on the glass coffee table with melons, fruits and tea leaves, and pointed to a few photos,

"The toilets in this house are quite narrow and dark, especially the switch box for the lights, which is located against the wall on the right side below the sink.

The only blood stain here is just below the light box, and the blood drips vertically.

The blood stains in this shape were obviously dripped to the ground by the suspect when he pressed the switch.

The light box is located on the right side of the sink, which determines that it is difficult for a normal person to put his left hand in and press the switch, and can only use his right hand, indicating that the blood comes from the palm of the suspect's right hand. ”

He glanced at Wang Fengnian and said with a smile: "So what did this bloodstain come from the suspect himself?" Or is it from the victim?

I'm more inclined to be the suspect's own blood.

If it is the blood stains that the murderer has stained from the victim's body, then the traces of the blood dripping should be from top to bottom, from thick to light;

The concentration of these blood stains at the scene is the same, which can only be caused by the murderer's own injuries on his hands.

According to the shape of the table knife, I guess that it was when the murderer committed the crime, because the handle of the Western dinner knife is shorter and the blade is longer.

When he stabbed forward with the handle of the knife, the blade was pushed against the palm of the hand and cut the palm of the suspect's right hand due to excessive force.

As for the crime scene, there was no blood, and all the clutter was piled up on the couch...

I guess the killer went to the bathroom to deal with his palms urgently, went back to the living room to wipe the blood on the floor, and then fled the crime scene.

Finally, according to the amount of blood under the light switch box,

I suspect that his hand injury is quite serious, and he has to go to a professional institution, that is, a hospital or clinic for suturing.

As long as you check whether there are any recent injuries with cut marks on the palm of your right hand, it is easy to check and screen out. ”

After that, Li Ang glanced at Wang Fengnian, who had a calm face, and said with a smile: "Uncle Wang, you must have passed the laboratory test now and found that the blood belonged to a third party in the room, that is, the suspect himself."

As long as a DNA sample is available, it is only a matter of time before the suspect is apprehended. ”

Li Ang still didn't say a word, that is, he speculated that a bizarre event had happened on a large scale in Yin City recently-

This burglary murder case is actually quite simple,

Even if they do not follow Leon's speculation to go to the hospital clinic for investigation or search based on DNA samples, the official can rely on a large amount of manpower to find the murderer by reviewing surveillance data on a large scale.

Generally speaking, the murder case must be solved, and the fact that two days have passed since this case is enough to prove that the manpower of the Yin City official is likely to be stretched.

This situation is caused by the extraordinary factors randomly generated by the killing game.

Or is there another reason?

Li Ang still maintained a flat smile on his face, and thoughts kept surging in his mind.