China's forensic DNA technology had been in use for 30 years. According to Wu Nan's knowledge, there were nearly 600 DNA laboratories in China, and there should be more than 1,000 DNA sequencers. The total amount of data accumulated in the national police DNA database was more than 40 million!
About 3% of the population's DNA data was stored in the superintendent's DNA database, but there were almost no ordinary people among them. The targets of DNA data collection were special existences, such as abducted children, criminals, criminal suspects, and so on!
For example, although some unsolved cases were not finally solved, the police department had collected the DNA of the suspect during the investigation of the case. Then, the DNA data of the suspect would appear in the national police DNA database!
If this suspect was caught in another case many years later and had his DNA collected by the police department, they would be able to find out that he was a murderer who had not solved an unsolved case!
Many unsolved cases were solved this way!
There was no hope, but the murderer gave himself away again and was caught.
Thirteen years ago.
On September 20, 2004, in Taicang City, Suzhou, a mutilated body of a girl was found in a wasteland near Jincang Lake. The police investigated the girl's name, Bao Ting. She was only ten years old and a fourth-grade student of Taicang Second Primary School. She disappeared after school on September 15, 2004.
The forensic doctor had conducted a detailed autopsy on Bao Ting's body and confirmed that her time of death was around 11:00 p. m. on September 18. She had been assaulted before she died. There were 29 wounds all over her body. Her left hand and left foot were missing. She had been violently stuffed into her mouth. The cause of death was due to bleeding in her mouth, difficulty breathing caused by damage to her esophagus and respiratory tract. She died of suffocation.
On February 16, 2005, in Jinlang Town, Taicang, when the cleaners were cleaning up the trash in the morning, they found the body of a girl in the trash can. After investigation by the police, the girl's name was Li Yan. She was only six years old and had studied at Jinlang kindergarten before she died. She disappeared in front of her grandmother's house on February 13.
After the forensic examination, Li Yan died at about 5 o'clock in the morning on February 14. The cause of death was strangled to death.
On June 9, 2005, near Xincang Village, Taicang City, two children who were catching frogs by the river on the weekend accidentally found the body of a highly decomposed girl in the river. After investigation, the girl's name was Wang Jie. She was only 12 years old. On May 11, 2005, she disappeared on the way to the afternoon call after school.
July 4, 2005, Taicang City Dongting South Road was repairing the underground cable. The excavator accidentally dug out a woven bag containing the body of a girl.
From September 2004 to April 2007, there were nine cases of missing girls being killed in Taicang City and the surrounding villages and towns in Jiangsu Province. The youngest girl was only six years old, and the oldest was only twelve years old. Six of them were persecuted before they died.
Although the cases were different, after DNA comparison and cross-comparison of other clues, the Taicang City Police Bureau confirmed that the nine cases were committed by the same person. It was then reported to the Jiangsu Province Police Bureau and then reported to the Police Department.
At the beginning of April 2007, a series of murder cases involving young girls in Taicang became a case under the supervision of the Superintendent.
On May 15, 2007, the Superintendent Department organized experts to conduct a consultation on this series of cases. They combined the nine cases of the girl's murder and determined it to be Taicang's "May 15" series 1 murder and girl's murder!
The case was extremely serious. The murderer specifically targeted girls. His methods were extremely cruel and he was highly concealed, causing great social panic.
In order to solve the case, under the supervision of the superintendent department, the Jiangsu Province police mobilized a large amount of manpower and resources to conduct a large-scale investigation. They arrested more than 80 suspects and collected thousands of records, but in the end, they found nothing.
In early October 2007, the Jiangsu police released the details of the case to the outside world and offered a reward of 300,000 RMB for clues.
The case had never been solved!
Ten years had passed!
It was still the same.
Taicang 515 series of murder and maiming of young girls had already been hailed as one of the top ten unsolved cases in China in the new century!
In Taicang, the influence of this case continued until today.
River Viewing Garden, Unit 1, Room 601.
In the small bedroom, Wu Nan put down his phone with a cracked screen and quickly opened the computer's web page. He entered the search for the Taicang case!
He only needed to search for these three words, and the encyclopedia entry that Wu Nan needed would directly appear.
It was the Taicang 515 series of murder cases, which could also be referred to as the Taicang series of murder cases!
He had just received a call from Zhao Chenglong. As soon as the DNA comparison results of the girl's body came out, Zhao Chenglong called Wu Nan. This was the result of Wu Nan's constant harassment for the past two days. He called every day, morning, and afternoon. Occasionally, he would discuss the case with Zhao Chenglong on the phone!
Wu Nan did not dare to harass his sister frequently. He would be beaten up, so he could only trouble Old Zhao!
At present, Wu Nan already knew that the victim was Luo Tiantian from the 630 Missing Person Case!
He also found out that the DNA extracted from the semen stain was the same as the murderer of the 515 serial murders in Taicang ten years ago!
That was why Wu Nan wanted to investigate the Taicang Case!
The result really shocked him!
This case was huge, too f * cking huge!!
It was one of the top ten unsolved cases in the New Era. The murderer had committed a series of crimes more than ten years ago. After three years, he disappeared. It had been ten years, and the murderer was no longer in Taicang, but in the Demon Sea. What was this? Coming back to the martial world?
Wu Nan looked at the Baidu encyclopedia of the Taicang case.
It was written in detail, and it was the case that the police had announced back then.
Wu Nan looked at it for a long time.
He could not remain calm!
After reading the encyclopedia seriously, he continued to search on the web page. He entered keywords and searched for relevant news. He saw the news reports from ten years ago and saw that some netizens had analyzed the case on the forum.
The impact of this case was really huge!
However, after Wu Nan read the analysis of some netizens in the past, he realized that it was useless. Instead, it would affect his train of thought. This was because they had almost begun to make up stories. They even made up the murderer's childhood experiences, saying how many tragic things the murderer had experienced in the same year that made him so twisted and perverted!
He couldn't expect to find anything useful on the Internet unless the murderer also pretended to be a netizen and participated in the discussion of the case. That way, he might leave some clues.
He still had to look at the file!
Luo Tiantian's case would definitely be investigated together with the Taicang 515 case!
What Wu Nan wanted to see the most now was the case file of the 515 case in Taicang!
However, it was estimated that the Devil Sea had just received the DNA comparison results and had only contacted Jiangsu. The file would definitely not be available for the time being!
But Wu Nan still couldn't control himself.
He looked at the time on his computer. It was only one o'clock in the afternoon.
Wu Nan got up and started to pack.
He wanted to go to the police station!
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