At ten o'clock in the evening, Cao Qin returned to the office with a straight face.

Liu Jie was obviously not a dangerous person, and Sun Yu had no interest in arresting her, so he did not follow him to Liu Jie's home.

"The person is missing, and there are traces of recent life in the room." Cao Qin took a cigarette from Sun Yu and leaned against the table, "We contacted her boyfriend and opened a photography studio.

The name of the deceased today is Qian Wenhua. It has been determined that she was a client of Liu Jie's boyfriend Guo Pengye and she made an appointment for maternity photos. I sent two people there. The clothes worn by the two deceased people in the park should have come from Guo Pengye's studio."

"Liu Jie is about twenty-eight years old this year. Doesn't she live with Guo Pengye?" Sun Yu asked.

Cao Qin blew out a smoke ring and said, "We are living together, but after Wu Chengan appeared, she said she wanted to live by herself for a while. According to Guo Pengye, Liu Jie is a very sensitive girl who doesn't like to talk. The two have been dating for six years.

We have been in love for many years and have not had sex even though we have lived together."

This is easy to understand.

Liu Jie grew up in her native family. She lacked father's love and lacked trust in men. In addition, her mother Liu Lingzhi met a bastard like Wu Xiaohu, so she must be very wary of love.

Seeing the bitter look on Cao Qin's face, Xia Lan consoled her: "She will definitely not go far, at least until Wu Chengan is released."

Cao Qin took a puff of cigarette impatiently, stared at the floor and said: "I'm not worried about not catching Liu Jie. I suddenly thought of a question on the way just now. Do we have substantive evidence to convict them? At least for Wu Chengan's side now.

There is no evidence."

While Cao Qin went to arrest someone, people from the police force were still investigating Qian Wenhua's situation.

Qian Wenhua has added Guo Pengye's studio WeChat, and through the chat history it can be confirmed that she has made an appointment for maternity photos next week.

It is not clear from the chat records whether Liu Jie proposed to come to Qian Wenhua's home this morning, and Qian Wenhua has not received a call in the past two days.

It can be seen that Liu Jie suddenly appeared at Qian Wenhua's home this morning, which explains why Qian Wenhua didn't even wash the milk cup after breakfast.

"Evidence..." Sun Yu sighed, "There will be."

Cao Qin could tell that Sun Yu had already thought of a backup plan to catch the murderer, but judging from Sun Yu's expression, this plan seemed a bit unusual.

Now they still have a glimmer of hope. If they can confirm that the cosmetics or wedding dress used by the murderer came from Guo Pengye's studio, then there will be evidence to prove Liu Jie's crime.

At 11 o'clock in the evening, the police who went to search Guo Pengye's studio sent back the news.

The clothes in Guo Pengye's studio are all managed by Liu Jie, and it is impossible to determine whether there are any missing clothes. As for the cosmetics specially used for the studio, they are still in the studio and have been brought back for testing, but it seems there is little hope.

"It's no wonder." Xia Lan grinned helplessly, "Wu Chengan should be the mastermind of this series of murders. He is a human trafficker. He is very thorough and good at making plans. It is normal that there is no evidence."

In Xia Lan's view, there is no doubt that Wu Chengan is the mastermind.

Liu Jie has been living in Yangbai County and has never committed a crime in the past ten years. However, she started committing crimes after Wu Chengan returned to Yangbai County. Wu Chengan was obviously in charge of everything.

"Next, we can only take risks..." Sun Yu lit a cigarette, his expression telling everyone that he didn't want to reveal his plan.

There have been three rounds of serial murders before today, with each round killing a man and a woman, but today only one pregnant woman died, representing Liu Jie's mother.

According to previous inferences, Liu Jie killed men who represented Wu Xiaohu, while Wu Chengan killed women who represented Liu Lingzhi.

Each time they killed each other alternately, and this time Liu Jie killed the woman Wu Chengan was supposed to kill in order to help Wu Chengan.

Out of the mentality of a perverted killer, she personally killed the woman who symbolized her mother, and even killed the child who symbolized herself. Then would she leave the man to Wu Chengan?

After explaining his analysis, Sun Yu said: "I think it will be, because this woman's psychology has long been distorted."

Xia Lan looked at Sun Yu in confusion and asked in a tone seeking confirmation: "You mean...Liu Jie is the mastermind?"

A circle of people present looked at Sun Yu in unison. Like Xia Lan, they all believed that Wu Chengan was responsible for all serial murder cases.

"Wu Chengan has no motive for killing!" Sun Yu replied matter-of-factly, "Think about it, his mother was sold by Wu Xiaohu, should he hate Wu Xiaohu? If you think he hates his stepmother Liu Lingzhi, then why does he still

Want to cooperate with Liu Jie?

The first deceased in the entire case was Dong Liqiang. In a serial murder case, the first deceased best reflects the murderer's psychology, so the starting point must be that Liu Jie killed Dong Liqiang.

Wu Chengan then killed Zhu Xingyue from the same village. In the entire case, only Zhu Xingyue was the most likely to expose Wu Chengan, and the other victims had no direct contact with the murderer."

Xia Lan nodded thoughtfully, recalling Sun Yu's words and said: "It feels like Wu Chengan was responding to Liu Jie's murder. Without any preparation, he hastily found a woman who barely met the standards."

When everyone accepted the inference that Liu Jie was the mastermind, they immediately understood what Sun Yu had just said.

Liu Jie will most likely leave the man to Wu Chengan to kill, so if Wu Chengan is released, Liu Jie can be found, and it is even possible to see Wu Chengan commit the murder.

Cao Qin finally understood what Sun Yu was sighing just now, "But Wu Chengan is a human trafficker, and his anti-investigation ability must be very strong. If we let Wu Chengan go and then lose him, wouldn't we lose a life in vain?"

Furthermore, what if after Wu Chengan was released, they did not meet each other for safety reasons and were not in a hurry to kill?"

"So we have to wait." Sun Yu rubbed his temples and used an innocent life as bait. He also felt a lot of pressure in his heart. "We will wait until Liu Jie becomes impatient before letting Wu Chengan go. This will ensure that Liu Jie will be released after Wu Chengan comes out."

Jie will immediately ask him to kill someone."

"How long?" Cao Qin asked a question she didn't want to ask.

"Three days!" Ma Youran answered for Sun Yu, "Liu Jie's psychology has been completely distorted. The interval between the park murders was only one day, and the interval between the second round of murders was three days.

Moreover, in the second round of murders, a woman died first, killed by Wu Chengan, and Guo Zhengfeng, who died later, was killed by Liu Jie, which shows that Liu Jie's patience period was three days."

Sun Yu bit his lip with difficulty, "Liu Jie killed someone very hastily this time. It stands to reason that evidence would be left behind. These three days can be considered as the time left for us.
Chapter completed!