The police immediately sent the syringe for examination, but did not detect the poison that killed Geeta. However, it is true that Libby borrowed a syringe, and the time was a month ago. As a result, the police conducted a more detailed search of the victim's home and found a toothpaste tube. They squeezed a little toothpaste out of the tube and tested it, and found that the toothpaste was mixed with a large amount of poison. Squeeze out a little more for testing, but it is a pure color. This shows that the murderer, Liby, had unscrewed the cap of the toothpaste tube, inserted the injection needle into the tube, injected poison, and then traveled, creating the false impression that he had nothing to do with the crime. Geeta, on the other hand, died of toothpaste poisoning after Libby went out.

Xiao Qiang repeatedly scrutinized the murder of Geeta Krijescu. I think this is a good method of murder. He told his younger brother Xiao Meng about this method.

When Xiao Meng took Chen Yunxiang and his wife to work, they put on gloves and opened the door of their house with a master key, and then put on shoe covers and entered the room. He went into the bathroom and took down the toothpaste from the shelf. Remove the syringe containing the potassium oxide solution from the backpack and insert the needle into the toothpaste to inject the poison. Then put it back as it is. He slipped out of the house and locked the door.

On the morning of July 17, Zheng Nanfeng got up and lit a cigarette and sat on a chair in his bedroom to smoke. Suddenly, I heard a "pop" sound in the bathroom. It seems that Chen Yunxiang inside fell to the ground. He hurriedly went to the bathroom to check. I saw Chen Yunxiang, who was brushing his teeth, still holding a toothbrush in his hand and falling to the ground, his body twitching, and foaming at the mouth. Zheng Nanfeng hurriedly asked, "What's wrong with you?" But Chen Yunxiang was speechless and entered a coma. Zheng Nanfeng hurriedly trembled and picked up his mobile phone to dial 120.

Since it was morning work time, the road was congested, and it took half an hour for the 120 ambulance to arrive. The doctor examined Chen Yunxiang and said that she was poisoned and could not be helped. Ask Zheng Nanfeng to call 110 to call the police.

Tian Chunda rushed to Zheng Nanfeng's house with his subordinates. I saw Chen Yunxiang lying on the bathroom floor, and her face became ugly because of painful convulsions. She also holds a toothbrush in her right hand.

"Did she die of poisoning while brushing her teeth?" Tian Chunda asked Zheng Nanfeng.

Zheng Nanfeng had not yet recovered from his fear and grief, and he said in a trembling voice, "Yes." I got up and sat in the bedroom smoking a cigarette, and when I heard a 'plop' sound in the bathroom, I hurriedly walked into the bathroom and saw Chen Yunxiang lying on the ground, already unconscious. I hurriedly dialed 120 from my phone. But when the ambulance arrived, she was gone. Tears welled up in his eyes as he spoke.

The criminal police put the toothpaste in the bathroom into an evidence bag and prepared to take it back for testing. A careful search of the room was carried out, and no suspicious traces were found.

Hao Dong whispered to Tian Chunda: "The murderer may have committed the crime with gloves and foot covers, leaving no traces. ”

"Do you have any enemies with each other?" Tian Chunda asked Zheng Nanfeng again.

Zheng Nanfeng hesitated slightly, shook his head and said, "We don't have any enemies." ”

Tian Chunda saw that Zheng Nanfeng seemed to have a hidden feeling, but he was reluctant to say it, or he didn't dare to say it. He said solemnly: "When Yu Qin ate the gummies given by Chen Yunxiang and was poisoned to death a few days ago, I asked Chen Yunxiang if he had any enemies. She said no. But a few days later she was poisoned. If she had spoken out and we had taken action, she might not have been killed. ”

Zheng Nanfeng listened to it and thought to himself, there is a hidden secret, but we can't say it, we really can't say it.

Tian Chunda stared at Zheng Nanfeng and asked, "Do you really have nothing to say?" ”

Zheng Nanfeng's neck was a little stiff and nodded.

"But be careful, this poisoning is against both of you. If you brush your teeth in front of Chen Yunxiang, or at the same time as Chen Yunxiang, you will also be poisoned. The next person who wants to poison you may continue to act. Tian Chunda issued a warning.

Zheng Nanfeng's face turned dark, and his neck stiffened and nodded.

After the toothpaste was brought back to the Public Security Bureau, the test results came out quickly, and the toothpaste contained the same cyanide component as the ginseng gummies tested a few days ago.

Tian Chunda said to the team members: "The situation is obvious, someone is deliberately trying to harm Chen Yunxiang and his wife. This couple may have offended someone. Judging from the situation, the perpetrator should be someone who knew Chen Yunxiang and his wife, and was probably an acquaintance, and knew their living habits and trends. We searched from the social relations and acquaintances of Chen Yunxiang and his wife.

Since Chen Yunxiang's death, Zheng Nanfeng has suffered from neurosis. Suspicious all day long. Walking on the road, he always felt that someone was following, and from time to time he looked back and couldn't see the person who was following him. He also looked and watched when he ate, lest someone poison him. He heard that silver can test for drugs, so he specially bought a pair of silver chopsticks, no matter what he ate, he first inserted it with silver chopsticks, and only ate it when he saw that the silver chopsticks did not change color. When he slept at night, although he locked the door very tightly and put the door on top with a stick, he was still worried that someone would come in and harm him, and he couldn't sleep well all night, as if he was not sleeping, and always felt that there was movement outside, and woke up from time to time, and then got up to check. After only ten days of hard work, he lost more than a dozen pounds of weight because he didn't eat well and slept well.

He thought that in the past, he always wanted to get rich quick and live a high-end life. But now it's getting rich quick, so what? My wife was poisoned, and I can't enjoy it even if I have money. I was scared all day long, living a life where no one was a ghost or a ghost. I was not rich before, but my life was peaceful and stable. Now I really want to go back to the old days, but I can't go back. What a pity!

It's not okay to go on like this. Even if you don't get hurt, you have to be tortured to death every day with nervous tension and chaos. What to do? After thinking about it, Zheng Nanfeng finally decided to quietly escape from Nanguang City and go to a secluded town to live incognito.

Zheng Nanfeng quietly came to Yanbo Town, a seaside town. He wanted to rest for a while, recover his body, and then find a job and live here in silence. But he didn't know, Xiao Meng, who was closely monitoring him and was about to find an opportunity to attack, also quietly followed him to Yanbo Town.

How should Zheng Nanfeng be eliminated? Sitting on the sofa in the hotel, Xiao Meng thought about smoking a cigarette.

You can find a small boat and row it out to sea, kill him, and disguise it as if he was drowning

It's okay to pretend to have fallen off the balcony of a hotel.

It seems plausible to go out for a walk alone at night and be killed by a mob.

Ideas are constantly emerging, but none of them are perfect, and there is no guarantee of absolute success.

After breakfast the next day, Xiao Meng put on makeup, put on a cape wig, sunglasses, and a beard on his face, and then walked out of the hotel to explore the town. Although the area of Yanbo Town is not too large, it is a good place for tourism, and there are many foreign tourists on the street, who wear tourist clothes and go shopping leisurely. Xiao Meng wandered around the street for more than an hour, and when he saw a local map for sale, he bought one and sat on a stone chair under a big tree to read it.

The terrain of Yanbo Town is long and narrow, like a distorted triangle. Forty-five minutes north of the city, there is an estuary called Rapids Bay. According to the description on the map, it is a wonderful place, "with clear blue waters, white sandy beaches, and a wonderful view". The map also notes that pearls are also cultivated in the bay.

The commentary also added this sentence: "This area is high and fast, please pay attention to safety!" ”

I don't know how fast the current is, will the corpse be washed into the sea in the blink of an eye? If yes, it's also a good place to kill Zheng Nanfeng.

In a place like Rapids Bay, there must be a lot of tourists. Even the corpse can be quickly washed into the sea, and it is easy to be seen when killing him. What about further north? From the map, it looks like a primeval forest, and there are almost no signs of houses. There are probably a lot of uninhabited coasts, how about renting a car to trick Zheng Nanfeng into an uninhabited beach and killing him on the spot? Wouldn't it be better to kill him first, and then throw him into the primeval forest, or into the sea?

After reading the map, Xiao Meng continued to wander the streets, and when he heard that there was a taxi company in the city, he went there to inquire about the situation.

The taxi company is in a yard with a dozen red taxis parked in the yard. Several drivers sat under a pergola chatting, seemingly waiting for passengers or waiting for the company to assign tasks.