It was raining and dark early, so Xiao Ran put down the thick stack of visits in his hand, stood up and moved his body.

He was stunned for a while at the light outside the window. Suddenly, Zhang Lei pushed open the door and walked in, asking, "How are you looking? Have you noticed anything?"

"I'll just take a look. There's really something wrong. I'll find it when I visit." Xiao Ran turned around and replied.

Zhang Lei grinned and said, "Come on, I haven't known you for so many years? You have a purpose after everything you do, just keep it in your heart and don't say it."

Xiao Ran smiled. He read these records to quickly pass on the neighbors around Cheng Yuguo and his family. After all, the possibility of acquaintances committing crimes still exists.

But after reading it, I didn't find anything, so I was too lazy to say it.

"By the way, Chen Quliang and the others have already transferred the surveillance camera back. Do you want to go and see it?" Zhang Lei said again.

"Of course I have to see."

Xiao Ran picked up the stack of transcripts on the table, walked out of the conference room with Zhang Lei, and handed over the transcripts back, and then came to the audio-visual materials laboratory of Chengdong Branch.

The audio-visual room of Chengdong Branch is not as big as the Municipal Bureau Technical Center, but it is enough. At this time, several visual detective police officers were checking the surveillance videos they copied. Zhang Hui, Chen Quliang and others were standing behind them and watching quietly.

"Brother Zhang, Leizi and I are here to help, I'm familiar with these." Xiao Ran walked over and said.

Zhang Hui looked at Xiao Ran and smiled with Chen Quliang beside him and said, "I didn't expect that Xiao Ran is still a versatile person, and the criminal investigation and technical investigation are seamlessly connected!"

Zhang Lei continued with a smile: "Brother Zhang, you don't know. Xiao Ran can do more. On-site investigation, audio-visual inspection, note-taking, and even help with an autopsy. I don't know when he will do this. I must have secretly gone out to make up for classes when he went to school."

"You sleep in my shop, don't you know if I make up for the lessons?"

Xiao Ran smiled slightly, and while turning on the computer, he said to the technician next to him: "Hey brother, copy all the surveillance cameras for me."

"Okay."

Seeing that Xiao Ran and the others had already entered the state, Zhang Hui patted Xiao Ran on the shoulder and said, "Then you watch first, let's do other things first. Call me any time if you have anything to do. Anyway, no one wants to sleep tonight."

"OK."

Xiao Ran nodded, watched Zhang Hui, Chen Quliang and others leave the audio-visual room, then took the copy of the relevant surveillance, and checked it with all concentration on the two split screens at his own unique rhythm.

On the two screens, one of which was the surveillance of Li Lu and Cheng Yuguo when they took their children in the park before the '7.28' case. They did not see the surveillance of the surveillance of their way back for the time being.

Another split screen displays the surveillance of Liu Chen and Xun yesterday from the building close to the cafe, and when they entered the building and left after meals. As for the relevant scenes of the two when they went to the hotel to check in, they will temporarily be placed in the back row.

Since Cheng Yuguo and Li Lu were not fixed when they were playing in the park, and the park was large enough that the surveillance could not be fully covered, the probability of finding suspects in various key surveillance areas inside and outside the park is relatively small.

So what Xiao Ran focused on was the crowd around Liu Chen and Xun or the other. After all, they were on the commercial street, and the surveillance was almost without blind spots, and the picture quality was high, so they were naturally the targets Xiao Ran focused on watching.

In fact, this choice did not disappoint Xiao Ran.

The surveillance camera had just been watching for about ten minutes, and just as Liu Chen, the deceased in the '8.09' case, was holding the old man waiting for the elevator and preparing to go upstairs to have a meal, a figure suddenly walked into the surveillance area in the corridor in front of the elevator.

At the same time, the Eye of Justice jumped violently.

Xiao Ran immediately paused all surveillance images and stared at the tall and thin figure with his eyes tightly.

Because the surveillance video was not sharpened, and the figure had just walked into the surveillance range with a few people, so the person's face was not very clear.

Xiao Ran continues to play the monitoring here.

As the man got closer, he could see that he was wearing a suit, combed in a middle part, with several books between his arms, slowly approaching the elevator, tilting his chin, looking arrogant, like a nobleman walking into a slum.

As the person approached, Xiao Ran also saw his appearance clearly: his face was long and white, his eyebrows were very light, his eyes were squinting, and his mouth was drooping. His height was very consistent with the judgment of the technician. He stood in front of the elevator with his eyes wandering.

As soon as he saw this person's appearance, Xiao Ran felt familiar.

But he stared at the man's face for a while, but still didn't remember where he had seen him. After all, there were too many people in his career and people who were not important were not very careful.

Until Xiao Ran noticed the two books and a notebook that were sandwiched between the man's arms.

Although the video is not high-definition, Xiao Ran guessed the corresponding titles from the covers of those two books, "The Supreme Procuratorate Gazette" and "Perfume: A Story of a Murderer".

"It's him!"

Xiao Ran's brows were slightly locked, and he muttered to himself that he was surprised and a pity.

He had already remembered that this person was the time when he was investigating Zheng Huanju's case after the New Year. He and his colleague Mei Peng from Chengdong Police Station, and when he visited Yongqiao Village, he met the wild expert who wanted to help them handle the case.

The content of Xiao Ran's memories gradually became clear.

He remembered that when the man was introducing himself, he seemed to have said that his name was Weng Tao, and he also showed them four perfect methods of committing crimes he had summarized.

This person named Weng Tao told them at the time that the same method of committing crimes should not be used in a series of crimes. When committing crimes, you must ensure that you are not witnessed, and you must wear gloves and shoe covers. It is best to commit crimes on a rainy night, avoid surveillance, and set the target of the crime as a stranger.

The methods Weng Tao and what they said at that time were very consistent with the methods of committing the crime in the '7.28' and '8.09' case!

Xiao Ran was basically sure at this time that the person named Weng Tao should be the murderer of these two cases.

It’s just a pity that the innocent person at that time has now become a suspect in a serial murder case.

Maybe I should have had a good talk with him at that time, but the case was urgent at that time and Guo Yilei's life and death were unknown. Where did I get the time to talk to him?

"Is it him? Who is it?"

Hearing Xiao Ran's whisper, Zhang Lei immediately leaned over and several other colleagues also stood up reflexively, thinking that Xiao Ran had created another miracle.

"Oh, I just saw someone I met before, nothing."

Xiao Ran said with a smile, after all, the surveillance camera has not been finished, and it was too hasty to determine the suspect in just a few seconds.

Hearing Xiao Ran's words, Zhang Lei and the others sat back in a silence and continued to stare at the screen and watch the surveillance.
Chapter completed!