Mr. Liu's death was something I never expected.

We all thought that this was a revenge killing against members of the "Seven Dragons and One Phoenix" school bullying gang. But with the death of Mr. Liu, it shows that the murderer's motive for killing is no longer what we originally thought.

The rest of the serious crime team continued to investigate the remaining 28 people who participated in the class reunion, and Li Meng and I called the forensic doctor Ren Qiushi and the technical team in charge of the scene investigation to rush to the scene of the crime.

I didn't see Mr. Liu for two days, and it was not until I came to the scene of the crime to see Mr. Liu's body that I really accepted this fact.

At the scene of the crime, flashing lights kept flashing, and the technical team was carefully surveying the scene.

Teacher Liu sat on the floor with her back against the sofa, her eyes widened and her face hideous, her hands bent into claws, as if she was making a final struggle.

She was wearing a shirt today, the neckline was unbuttoned in two, and there were all scars on her neck and face, which were blood-red scratches, and there were several heavier scratches that were still oozing blood.

After putting on the protective equipment for the investigation site, I walked slowly to the side of Teacher Liu's body, she seemed to be much fatter today than when I last saw her, not so much fat as swollen.

Ren Qiushi was conducting an autopsy at the scene, she looked at the body surface of the deceased, frowned suddenly, and said to me lightly: "The deceased should have died of an allergic disease. ”

"Allergic disease? How can you have allergies at home?! "I'm puzzled.

People suffering from severe allergic diseases must pay special attention, especially at home, where allergens will not appear.

That's what puzzled me.

Ren Qiushi gently picked up the deceased's chin, and the blood-colored scratches on his neck were very shocking, and he said lightly: "The direction of the scratches is unified, and they are all scratches from top to bottom. ”

Then, he raised the deceased's hands again, carefully observed the deceased's fingernails, and continued: "It is not difficult to tell from the dander in the nails of the deceased's two fingers that the deceased scratched these scratches by the deceased himself. ”

"It's too ruthless to do this......" I looked at the countless scratches on Mr. Liu's face, neck, and collarbone, and the scratches were already blurred with flesh and blood, and the scene was very bloody, and I couldn't help but shudder.

"The deceased's face was slightly red and swollen, the side of the face, behind the ears, and the neck were the most severely scratched, and there were densely distributed red spots, like eczema, which is a very typical sign of allergies." After Ren Qiushi observed carefully, he muttered.

"She's staying at home so well, how can she be allergic?!" I looked around the room for allergens and muttered softly.

"Lao Qin, come here! Look at this! Li Meng squatted on the ground not far from the sofa and suddenly beckoned to us.

After the criminal police at the scene took pictures for retention, Ren Qiushi and I also came up.

On the ground is a blue perfume gift box, and inside is a very high-end looking perfume bottle.

"Perfume bottles? Could it be that the deceased was allergic to perfumes?! I asked suddenly.

"But this perfume hasn't been opened yet." Li Meng took the perfume bottle out of the perfume gift box, and a layer of dust suddenly rose in the air.

"Don't move!" Ren Qiushi said very vigilantly.

He stepped forward and took a closer look at the dust floating in the air.

Then, he picked up the blue perfume gift box on the ground, reached out and wiped it vigorously on the groove inside the gift box, and the fingertips of the white gloves were suddenly stained with a very thick layer of powder.

"What is this?" I asked, confused.

"It looks like pollen." Li Meng took a closer look and said in a deep voice.

"It's pollen, indeed." Ren Qiushi nodded in affirmation.

"Could it be that the deceased was a pollen allergy?!" My eyes widened and I exclaimed.

"Pollen allergy refers to the body's allergic reaction to the germ cells of plants, i.e. pollen, also known as hay fever. It can cause nasopharyngeal discomfort, accompanied by allergic reactions such as coughing, wheezing, redness, itching, and tearing. There will also be complications such as asthma and eczema, and in severe cases, it can lead to lung infection and death. Ren Qiushi explained to us the principle of pollen allergy and the reaction after allergy from a medical point of view.

Li Meng stood up and checked room by house, and found that all the green plants in the house were flowerless green plants such as pothos and keels that could not bloom.

Women, there is no one who does not love flowers, and it has become the norm of life to raise a few pots of flowers at home.

Thinking about it this way, a teacher with severe pollen allergies will not accept flowers on Teacher's Day.

Judging from the situation at the scene, it should be Liu Huiqin who opened the blue perfume gift box, and then a large amount of pollen splashed out, forming pollen dust in the air, and Liu Huiqin immediately had a severe allergic reaction after inhaling the pollen.

Then, she subconsciously threw the perfume gift box in her hand far away, and then slid from the sofa chair to the floor, because of the severe cough and dry itching caused by pollen allergies, after she scratched the itch hard, it left serious scratches on her body. ”

According to the environment of the scene, I simply made a crime scene restoration, this kind of death is really a kind of torture.

"So this blue perfume gift box must have been sent by the murderer. The murderer must be very familiar with Liu Huiqin, otherwise he would not have known that she was allergic to pollen. Li Meng settled down and immediately added.

"Immediately take fingerprints from this blue perfume gift box, there must be the murderer's fingerprints on it!" I beckoned someone from the technical team to come over and take this blue perfume gift box away for inspection.

"Also find out where you bought this blue perfume gift box." Ren Qiushi thought for a moment and added.

With the death of Mr. Liu, we are even more determined that the murderer is one of the members who attended the class reunion, and in three days, three people have died in a row.

Among them, the time between Hu Yuanling's death and the murderer's dressing change was long, but Xu Kuan was stoned to death by a falling object from a height, and the death of Mr. Liu this time were both real-time crimes committed by the murderer.

The progress of the murderer's crime is really too fast......

It seems that the speed of our case investigation is also going to be accelerated, but with so many people, there is really no way to significantly improve the progress of our investigation.

We need to investigate the identity information, current address, work address, and social relations of these people, and it is definitely not as simple as imagined.

But this time, I really feel that the murderer is not far away.

I don't believe that the murderer would still wear gloves and shoe covers to give Liu Huiqin gifts.

Soon, the technical team extracted a large amount of pollen and footprints on the ground at the site......