Chapter 29 Chapter Twenty Eight

Wang Gedong was lying in a chair, analyzing the case. Just now, Lao Chen came to him again and reported more information to him. Since Jiang Xiaobing's body had been soaked for many days and no obvious wounds were found on his body, it can only be concluded that he died of nicotine poisoning. He must have been stabbed by something like Wang Liqin, but it is impossible to know exactly how he died. There is nicotine in many things, such as cigarettes you smoke every day, and some pesticides, but they are all in trace amounts.Not to mention high-purity nicotine, even low-purity nicotine is not available on the market.Only some pharmaceutical companies have special production of high purity, as a clinical drug.

As a highly toxic substance, nicotine is strictly controlled in China. Due to its limited use, few companies will specialize in its production, let alone purchase channels.And the management during production is also extremely strict, because nicotine can enter the human body directly through the skin and air, so we must be careful during production, and the staff will do a good job of protection. The high-purity nicotine produced will not let work at all. Personnel have the opportunity to bring it out. Therefore, Chen's forensic doctor concluded that the nicotine was produced by the murderer himself.

In fact, it is not complicated to extract nicotine by yourself. There is a special introduction in the organic chemistry textbook of the university. Cigarettes are the simplest extraction material.But generally the nicotine produced by one's own laboratory is of ordinary concentration, and it takes a lot of effort to extract high-purity nicotine. If Chen's forensic inference is correct and the murderer extracted high-purity nicotine himself, then the murderer is obviously a chemical expert. At the same time, the murderer's plan to destroy a box of money is even more incredible. The chemical reaction between the two is not complicated, but the murderer's careful planning is indeed his first and unique crime method.

First of all, sodium metal, as the most active metal, reacts as soon as it comes into contact with air or moisture, and is usually stored in kerosene.The murderer came up with a way to protect it with limestone.Limestone does not react with sodium metal; limestone has good water absorption and will not cause contact between water and sodium metal; limestone is made into a sealed cover, which also isolates the air from reacting with sodium metal.At the same time, this layer of limestone also ensures that when the box falls into the water, the metal sodium will not completely contact the water in an instant, resulting in an explosive violent reaction.

Secondly, the box is thrown into the bottom of the lake. After the water enters the box, the limestone absorbs water first, and then the water penetrates into the metal sodium area, and the metal sodium reacts to produce sodium hydroxide and hydrogen gas. The hydrogen gas will naturally break through the limestone and come out, so the sealing cover of the limestone is broken. So, metal sodium and water fully contact and react.That's why Li saw more blisters come out after the box sank. Finally, when the entire box was filled with a strong alkaline solution, the aluminum paper wrapping the money was quickly reacted and melted, and all the money was corroded cleanly.

What an exquisite criminal thinking! If the murderer is not Wang Gedong's opponent now, but he is looking at other people's files, he can't help applauding the murderer. From the beginning to the end, the murderer has firmly grasped the psychology of Wang Liqin and the police, grasped their behavior, and proceeded step by step according to the plan. Wang Gedong complained about why he followed the murderer's plan every step of the way, and every step was calculated by the murderer, but he carefully analyzed the whole case from beginning to end, only to find that even if he started all over again, the murderer would still succeed, because every time the murderer The choices given to them in one step are all mandatory questions with only one path.

On the night of the incident, Jiang Xiaobing walked into Anle Road alone, and there were no other pedestrians on the street at that time.The murderer did not know what method he used to inject high-purity nicotine into Jiang Xiaobing's body. At the same time, the murderer also turned on the recording and recorded Jiang Xiaobing's last utterance, "Ah... ah... what are you going to do, don't... ah... ..." Immediately, the toxin touched his nerves, and Jiang Xiaobing never woke up before he understood what happened.Afterwards, the murderer probably took Jiang Xiaobing away in a car and left Anle Road.

The next day, the murderer called Wang Liqin to inform him of the kidnapping. Jiang Xiaobing was dead at the time, and the last voice of Jiang Xiaobing recorded by the murderer could only be used once, so naturally it should be used at the most critical moment.That's why the murderer kept claiming that he was an intermediary and prevented Wang Liqin from talking to Jiang Xiaobing.That's why Lin Jie and those idiots suspected that the kidnapping case was a drama.So he directly called the murderer in the name of the criminal police team and advised the murderer to surrender himself. The murderer knew that the police had intervened. The police did not believe it was a kidnapping case, and they couldn't bring Jiang Xiaobing back to life to make a call. They could only cut off his ear and boil it for the police, so that the police could not identify whether the ear was a dead person or a living person.

Although Wang Gedong suspected that Jiang Xiaobing had been killed at that time, it was only a guess without any evidence to support it.Under the circumstances that cannot be determined, no matter which criminal investigation expert is replaced, the first thing is to ensure the safety of the hostages. In addition, they have no knowledge of the kidnapper's identity and location, so it is impossible to take the risk of arbitrarily thinking that the next ransom payment is a scam. Kidnappers make deals.Having said that, even if they knew Jiang Xiaobing was dead at that time, if they wanted to capture the murderer without knowing the identity and location of the murderer, they could only continue to make a deal with him.

In this matter, Wang Gedong believed that he had done nothing wrong. It would be the same choice for anyone else. If he did not continue to deal with the murderer, and the other party left, how would he solve the case in the end of the world?The superior must agree after listening to the report. Next, the kidnappers accurately grasped the psychology of the police and gave the police three days to solve the case.During the three-day arrest work, Wang Gedong himself did not make any mistakes.Through surveillance, visits, and investigations, they have done everything that should be done, but the murderer is too cunning to leave any clues.Three days of work in vain.

After three days, the kidnapper chose the stone beach of Nanhu Reservoir to do the transaction. At that time, the kidnapper had obviously guessed that his cousin was in plain clothes, but he didn't point it out directly. Instead, he followed suit and let the police arrange the plan. At that time, did I make a mistake in ordering to trade with real money? Wang Gedong thought about it, and finally shook his head. If it were someone else, he would also order real money. First, the murderer played those few seconds of the recording in order to reassure the police and Wang Liqin that Jiang Xiaobing was dead.The police believed that Jiang Xiaobing was still alive, and they never thought that those few seconds of words were recorded during his lifetime. From the perspective of protecting the hostages, they needed to trade with real money. Second, Xiao Li and Wang Liqin checked the box and found nothing unusual, and Xiao Li was armed with a gun. After throwing the box to the bottom of the lake, the distance between him and the box was no more than four meters.The box contained three million yuan, and the total weight was at least 70 kilograms. Even if the kidnapper is a good swimmer, it is obviously not right to take the box weighing more than 70 kilograms away from the underwater place less than four meters away from the armed police. possible.In addition, the GPS device was installed in the box, and the kidnappers took the money to ask for a dead end. Third, because the kidnappers repeatedly warned against using fake money, Wang Liqin doubted the police's ability because the police failed to find any clues about the kidnappers in three days, let alone fooling the other party with fake money. The balance of several factors led them to finally use three million real money to make a deal with the murderer. In this regard, Wang Gedong did not do anything wrong when he asked himself. No matter how rich the criminal investigation experience is, how often have you encountered this kind of case and seen this kind of method? It's an unbelievable method! After more than ten minutes of preparations that the police thought was foolproof, they found out that they had been cheated by the kidnappers and all the money had been lost. The reason given by the kidnappers was that they had warned Wang Liqin not to let the police follow them. So far, the existing kidnappers' behavior and investigation clues still do not show that the kidnappers are not really asking for money, but want to kill Wang Liqin. Despite being scammed, do the police have other options?To catch the murderer, he had to continue trading. On the second day, the snipers and police officers had already set up around and kept the stone beach under strict surveillance, so Wang Liqin was assured of letting Wang Liqin go to trade alone. At the same time, I also had an eye for using fake money this time. But at the final juncture, the murderer used a new trick and still did not show up, killing Wang Liqin in just three minutes. A flawless scam. As a result, Jiang Ping's family died cleanly, and the total property was discounted by half. There is still no clue about who the murderer was, how many people, and where. After analyzing it from the beginning to the end, Wang Gedong knew that even though there were a few suspicious points in the middle, he had no other choice at every step. He could only follow the murderer's trick and fall into the trap step by step.Under the seamless arrangement from the police's point of view, the kidnappers still killed people. He buried his head in his hands angrily. After a long time, he suddenly raised his head and his eyes lit up: "I finally figured it out! This time it's not a kidnapping case at all. The murderer has only two purposes for everything after Jiang Xiaobing's death. One is to destroy the Jiang family's property, The second is to kill Wang Liqin. Obviously, the murderer has a deep hatred with the Jiang family!" The criminal motive is out!