Chapter 59 Chapter 58

Lin Jie stepped into the office wearily, and told Wang Gedong in disappointment: "Boss, on the night of November 19th, Liu Zhiyong had dinner with someone in a restaurant in the city, and he has been sent to monitor it to prove it. And on the night of December 6th, in his community The CCTV surveillance captured him, judging from the time, the possibility of him rushing to our county was ruled out." Wang Gedong sat in the chair for a while, silent, and said for a long time: "Then let him go first." Lin Jie said: "However, I think this alone may not be able to prove that Liu Zhiyong did not do it. Although he is not in the county, he is quite rich and can kill people by buying a murderer. Aren't there at least two murderers?" ?"

Wang Gedong shook his head: "This kind of blatant killing under the noses of the police is not something that desperadoes dare to do. Moreover, this case has a lot of technical content, and the gangsters who bought the murderer are not so professional. The murderer must be a chemical industry. It is unlikely that money will be used as a bond of interest between professionals, accomplices and murderers, and the two must have other deeper relationships." Lin Jie was at a loss: "Wu Gang and Liu Zhiyong have been ruled out, so who else could it be?" "How's the check list for the heights from last time?"

"Most of the people are currently located far away from King County. We confirmed through phone calls from their units and the local police station. These people had clear alibi in the days surrounding the two incidents. There were only five or six people. Living in the urban area or several other nearby counties and cities, although there is also an alibi, but the possibility of going back and forth that night when committing the crime cannot be ruled out." Wang Gedong narrowed his eyes slightly, thought for a moment, and said, "Before committing the crimes in these two cases, the murderer had to go back and forth many times to check the location, and he couldn't succeed if he arrived at the county on the same day. There is an alibi for several days, so the possibility of them being the murderer does not exist."

Lin Jie said helplessly: "If that's the case, then everyone on the list will be excluded." "Everyone?" Wang Gedong said, "Are you sure that everyone has been excluded? Is there anyone on the list who is currently abroad, or who cannot be contacted elsewhere?" "There were a few in the past few days, but they have been contacted and ruled out in the past few days." how is this possible? How is this possible! Wang Gedong's expression suddenly became serious. All the students who fit the murderer's height were ruled out, and none of them had the possibility of committing a crime.

Did I judge wrong from the beginning?The murderer was not Gan Jianing's classmate at all, but someone else, or was he not born in chemical engineering, but became a monk halfway to study chemistry? If that's the case, how can the vast crowd find the murderer who never showed up and never left any pointing evidence? For the first time, he doubted all his judgments in this case. Wang Gedong sat in the chair dumbly, silent for a long time, let out a long breath, called Chen Forensic Doctor, and asked as soon as he entered the door: "Old Chen, let me ask you, must the murderer be born in a chemical engineering department?"

"This..." Chen Fayi didn't know the leader's intentions, and was a little at a loss, "It should be." "What should it be?" "Well... the first time the murderer hid metal sodium in the box and ruined the money. High school students should know about this chemical reaction, but the extraction of metal sodium, especially the extraction and preservation, prevents the sodium from being exposed to the air. This step It is very troublesome and requires a strong ability to operate experiments. I don’t think he is from a professional background, so he should not have such a good method. Later, nicotine and hydrogen cyanide, both of which are of high purity, should have been refined by the murderer himself. This is not something that can be learned in high school chemistry textbooks. Although these points alone cannot rule out that the murderer was found by studying the information. But if that is the case, first, it is not uncommon to learn poison extraction by looking up information. , What is strange is that poisons with a higher concentration were extracted, which requires very professional experimental ability. An intern forensic doctor under me who studied chemistry as an undergraduate said that he thought he could extract these two things, but the concentration would not reach such a high level. He suspected the murderer Maybe he has been engaged in professional research work in chemical industry, and even understands the principles of chemical industry equipment. Second, inorganic chemistry is something learned in junior high school. Since the murderer came to avenge Gan Jianing, the murderer would not be too young. The murderer taught himself to refine poison, so he probably would not have thought of the two ingenious inorganic chemical reactions of metal sodium reacting with water and then dissolving aluminum paper. Therefore, based on a comprehensive judgment, I say that the murderer is from a professional background and has been engaged in chemical engineering for a long time. industry."

Wang Gedong recalled Chen's forensic analysis carefully again, nodded to Lin Jie and said, "That's right, what Old Chen said is right, there is one thing we must make up our minds to insist on, the murderer must have a background in chemical engineering! This direction of investigation must never chaos!" "However, among the students of Gan Jianing's previous and previous classes, all the students who fit the height have been screened, including those from all over the country and abroad, and there is no possibility of committing a crime." Lin Jie still seems not to believe this analytical reasoning that is not supported by substantive evidence.

Wang Gedong smacked his lips and said, "This only proves that we missed Gan Jianing's interpersonal relationship. In this way, Team Lin, you can send someone to check all her interpersonal situation from the beginning, including relatives, colleagues after work, and even The teachers in the school also asked more deeply." "Okay, I'll do it." Lin Jie replied with a feeling of helplessness. Wang Gedong also understood that the case had been handled for so long, and they hadn't even found the shadow of the murderer. The murderer's provocative words on the phone at the time were vividly remembered, leaving a shadow in the hearts of all team members.What's more, they haven't grasped any substantive clues so far, and all the directions of investigation are based on this hypothetical reasoning without substantive evidence.

As long as it is hypothetical reasoning, it is impossible to guarantee 100% correctness. Even Wang Gedong himself cannot be 100% sure that the murderer must have a background in chemical engineering, but this possibility is relatively high. What if not? He didn't dare to think about it, if the premise of all the current detection work is wrong, then all of them are doing useless work, and this case may become an eternal unsolved case. Although in his heart he felt that these deceased were quite abominable, but he was not guilty enough to die. He would not let this arrogant murderer go unpunished, which was unacceptable to him emotionally and rationally.

He understands Lin Jie's thinking, and also understands that the current criminal investigation team has been slack in this vague murder case. It has been delayed for a long time, and there has been no progress in solving the case. Every time a suspicious target appears, the possibility is ruled out within a few days. This is a difficult thing for every policeman to accept. What needs to be done now is that his own emotions must be stable and optimistic, so as to encourage all members of the criminal investigation team to continue the investigation with courage. Wang Gedong is not a fine official who has both sides in the officialdom. Although he is in charge of criminal investigation work, he knows that sometimes the team members under him don't listen to him very much.

The deputy director in charge of public security and the deputy director in charge of economic investigation are all on call and very obedient, because these two departments are the most lucrative positions. In comparison, criminal investigators suffer the most, and sometimes even take risks. However, in addition to their regular daily income, they mainly rely on the bonuses for solving crimes. But Wang Gedong's character is too upright, even if he sometimes sells some favors to other bureaucrats, but he is not in moderation, always trying to maintain the "justice" in his heart, which is incompatible with the current officialdom, which also makes him unpopular. The superiors are happy, so every time they apply for a case-solving bonus, they always get 30,000 to 50,000 yuan, divided by dozens of mouths. Compared with Gao Dong, the deputy director of criminal investigation in the neighboring city, his team is much more beautiful. His father-in-law is the official secretary of the Municipal Law Committee, even his superiors are very polite to Gao Dong, and Gao Dong is a well-known criminal investigator in the province. An expert, who has solved countless major and important cases, not only is it easy to get promoted by following him, but he also declares a case-solving bonus, which is hundreds of thousands in one batch, and his subordinates are even fatter than those of the Economic Investigation Team. Wang Gedong was transferred to Jin County a few years ago because of his past discord with his superiors. He did not bring out the criminal investigation team alone.The reason why a group of people, including Lin Jie, still devote themselves to handling the case with him is that on the one hand, his straightforward personality will be appreciated by some policemen at the bottom, and on the other hand, everyone knows that Wang Gedong is an expert in criminal investigation. None of the major criminal cases in Nianfanjin County was unsolved. Even if the person was not caught, the target was successfully locked and he became a wanted criminal across the country.And Wang Gedong gave the credit to his subordinates every time, and the criminal investigation team also knew that it was difficult for their boss to get promoted, but these people under them had accumulated credit for several years, and it was no problem to be promoted, so they would still listen to Wang Gedong's orders. Seeing Lin Jie's tired expression, Wang Gedong took a breath, regained his confidence, and said with a smile: "Captain Lin, do you feel that this case has not progressed and that there is no hope of solving it?" Lin Jie quickly shook his head: "It will definitely be broken sooner or later, but now that there is no sufficient evidence, some people below are becoming pessimistic." Wang Gedong smiled: "Actually, it's no wonder that everyone has such emotions. The work of solving a case is like playing mahjong. Sometimes you wait for a card, and you don't see the card show up until the end of the game. At this time, you will definitely think, maybe The waiting card is firmly held in someone else's hand, and it seems that this one can't be played. Unexpectedly, at the end, this card suddenly appeared at the end. The same is true for solving cases. Be patient and wait for the end. The emergence of this opportunity. Even if the work ahead is very difficult, when the last opportunity appears, everything will become a matter of course in an instant." He continued: "When I was young and just joined the police, I dealt with a murder case. I was busy for more than half a year before I finally caught the murderer. Since the murderer committed the crime, he will be caught sooner or later. We are the police It requires not only carefulness, but also patience, especially when I choose to do criminal investigation. I have been handling cases for more than ten years, and I have handled at least fifty or sixty murder cases. Up to now, only two cases have not been solved, but These two were murderers on the run, and were finally caught by the police elsewhere. I have never handled a murder case that was unsolved. This is a typical revenge murder case, and there is no exception!" He paused, and then said: "We don't have any more substantive evidence for the time being. The most important thing is to stick to the correct direction of solving the case. This direction is to firmly believe that the murderer is from a chemical engineering class! Including Gan Jianing and colleagues , there are only one hundred and eighty people who came from the chemical engineering class. We will trace them one by one in detail. It is impossible not to find out. So you must have confidence and stick to this line. I can guarantee that the murderer will soon It will come out of the water!" After hearing what he said, Lin Jie's mood suddenly became much more positive, and he said in a serious voice, "Boss, I'll investigate right away, and I will definitely not let this arrogant murderer hide!" Wang Gedong nodded with satisfaction: "By the way, I won't go to see Liu Zhiyong. You can find someone to apologize to him for me, and tell him by the way that you can't disclose all the facts about the case to anyone. The murderer is very serious. It may be his classmate, if he tells others, our police will trouble him again."