While the manhunt is in progress

Chapter 406 The Case of Cai Cheng
"Judging from the copy of the family tree in the data, the old man has two brothers, four cousins, and more than ten cousins ​​of the same age who are farther away." Song He counted and calculated: "Even with the sons and nephews, the age There are more than 20 people who meet the conditions.”

"The workload of this comparison is not small, but Lei Ju and you still haven't found it after finishing it. It can only show that the problem still lies with the old man."

"Know that the farther the blood relationship is, the less the gene can match, until it can only match the gene on one chromosome."

Lei Xu nodded: "If you look at it purely from the similarity of genes, it is indeed very likely that it is the son of this old man. The key is that we can't find this person for the time being."

"You have to make a clear direction first." Song He thought for a while and asked, "Have you investigated the old man's life history?"

Lei Xu nodded, and took out a relatively new investigation document and handed it to Song He: "Except for the more detailed one about the time period of the incident 23 years ago, the rest are relatively rough."

Song He took it, took a closer look and said, "Although it's not very accurate, but if you don't return home for several years, there is a high possibility that there is an illegitimate child outside, but we need to analyze how to find him from the beginning."

"First of all, this person has criminal experience, and with that hairstyle at that time, he can basically be judged to be a prisoner. And it is summer, and the hair grows faster, which means that he has been out of the labor camp for less than half a month. "

"Secondly, the murderer is familiar with the environment of the crime scene, at least he lived nearby for a period of time. At the same time, the murder of passion also prevented him from having time to familiarize himself with the terrain of the crime scene in advance."

"So when he was living nearby, he may have contacted the place where the crime occurred. But except for two local residents who saw him on the day of the crime, no one has seen similar people haunting the vicinity, so it can only be him Went to the crime scene when no one was there."

"And the scene of the crime is farmland, there is nothing but crops, so I think he came to steal crops."

Lin Hui asked thoughtfully: "Why do you want to steal crops? What is he trying to do? Isn't it more convenient to steal money?"

Song He explained: "Compared with stealing money, stealing crops will be safer for him and conducive to short-term lurking. And this attitude of not doing production but choosing short-term forbearance shows that he is waiting patiently, and his Purpose……"

Lei Xu nodded again and again, suddenly said: "That old man!"

"That's right, his purpose is to meet the old man." Song He continued to analyze: "The old man appeared on the day of the crime, but the murderer killed Yao Fang on that day, and this kind of passionate killing means that the murderer was emotionally unstable at the time." .”

"This is contradictory to the murderer's forbearance in the early stage. There is only one possible cause of this phenomenon, that is, although the old man met the murderer, he did not meet his request."

Lei Xu nodded, but frowned again: "What request would it be?"

"I'm afraid we can only find out if the murderer is found." Song He shrugged: "Now let's analyze from his behavior. First of all, from his performance, he must be cautious."

"Then after he met the old man, although his negative emotions were aimed at the old man, he did not attack the old man, but chose an unrelated thin woman as the target of the murder."

"Combining with the description of the old man's character in the investigation that year, we can basically conclude that the murderer does not have the character to confront a strong person, which means that he is relatively cowardly."

"The crime of such a person's first imprisonment is generally not for fighting or wounding or homicide, but most likely for theft or a relatively low-key crime."

"So, in addition to the characteristics of the murderer you have in Lei Bureau, what we are looking for is a habitual offender who was released within 20 days before the crime, has a minor criminal record, and was born in a city where the elderly once worked."

Lei Xu touched his chin with bright eyes: "23 years ago, the old man was 53 years old. Combined with the time when the old man went out to work, the basic age of the murderer can be determined. It should be between 31 and 35 years old at that time."

"Put it now, it is 54 to 58 years old!"

Zhou Kai nodded: "Combined with the factors of appearance, we should be able to screen out a group of people with previous convictions, just do a genetic comparison."

As soon as she finished speaking, Wu Xuerui had already used the computer to call up the query results: "According to your inference, there are more than 20 people. The mine bureau will handle the specific operation."

Hearing this, Lei Xu immediately went to the computer, took the photos of the elderly and compared them one by one, and quickly selected seven of them: "I will check these seven first, thank you all!"

Under everyone's understanding eyes, Lei Xu took the personnel information printed out by Wu Xuerui, and quickly left the discussion room with the police officers from Changshui County.

Song He saw this and smiled and said: "In addition to his voice that sounds like thunder, Lei Ju's resolute and resolute character also matches his name."

Zhou Kai laughed, and said with emotion: "If such a case were brought to the present, it would probably take only half a month to win it, and it would have become an unsolved case back then."

"Brother Kai, it's rare for you to still be emotional." Song He joked and said with a smile: "Isn't our team just to deal with this kind of cases, let alone 23-year-old cases, I'm afraid we will encounter 50-year-old cases in the future. "

"Shut your crow's mouth!" Zhou Kai thought about the challenges brought by the 50-year unsolved case, and gave Song He a hard look.

At this moment, Song He's mobile phone suddenly vibrated to receive text messages one after another, and he actually received dozens of text messages at the same time!

Everyone looked at Song He in surprise, and saw him turn on the phone with a look of anticipation on his face, and immediately raised his head and said with a smile: "Lei Ju and the others will have to collect and compare biological information for a while, let's use this discussion room to study a case?"

After all, he didn't wait for his companions to respond, and directly handed the phone to Wu Xuerui, and at the same time signaled Lin Hui to close the door of the discussion room: "Caicheng's case, print it out and let's analyze it."

Everyone had already learned about Liu Yun's matter from Song He's mouth, and they started to study the case very cooperatively.

"The dismemberment case?" Zhou Kai's tone was inexplicable, his brows were tightly frowned, as if he had thought of something, and his voice was unprecedentedly low: "Why did he investigate this case?"

Song He thought of the case in Nancheng, Zhou Kai's hometown, and sighed secretly, but said calmly on the surface: "He is Huang Jiefeng's black line, he wants to help but can't reveal his identity, so he can only ask someone for help. "

"Some time ago, he accidentally learned that our case detection rate is still 100%, so he wanted to ask us for help."

Zhou Kai's complexion returned to normal, and he nodded, "This case is a representative case in Caicheng. He is so dedicated to helping, he probably has something on his mind."

"I know." Song He chuckled, "Huang Jiefeng's handsomeness is well-known in the police circles of Wisconsin, and he also has a daughter who is going to college. It is said that his image and temperament are extremely good."

Wu Xuerui smiled immediately, looked at Song He meaningfully, and teased: "So he wants to develop the upper line into an old man?"

"I don't know anything." Song He denied it with his hands spread out, but there was an expression on his face that made everyone smile.

(End of this chapter)