"Team Xu, Jiahang Experimental Middle School has sent the backup video of their administrative building, and we have finished analyzing it."

As soon as Xu Qiangdong returned to the office of the criminal investigation team of the Lingang Police Station, a young team member stood up with joy on his face.

This person's name is Long Zhengfei, and he also graduated not long ago, but he has a flexible mind and is thoughtful, and he is quite valued by Xu Qiangdong, and the rest of the criminal investigation team also praises him.

"Okay, is the analysis report being written as well?"

"Yes, I'm writing, it's expected to be finished around three o'clock, it's just..."

"Just what?"

"In fact, we not only analyzed the video from 7 o'clock to 9 o'clock, we asked the staff of Jiahang Experimental Middle School to copy all the video from the afternoon." His face showed a little timidity, "At that time, the matter was urgent, we wanted to call you to confirm but found that your mobile phone was turned off, so we made this decision without authorization." ”

"There's nothing to be afraid of, you're doing the right thing. Now that I think about it, the murderer may also sneak into Liu Xinjian's office in the afternoon. Xu Qiangdong nodded, "But such a long surveillance video can be analyzed in an hour?" Don't miss a small but important clue! ”

"Rest assured, the surveillance footage is about 9 hours, and we happen to have 9 people. During this time, four other people, in addition to Liu Xinjian, went to his office, and the time was concentrated between 7 and 9 p.m. We have already taken out the four video clips, and now we are about to contact the person concerned to come to the police station to make a record. ”

Long Zhengfei turned on the projector as he spoke, and projected the four processed videos on the computer one by one onto the large screen directly opposite.

The first video is at 7 p.m., and a student is seen in the footage.

"According to our investigation, this person is Fang Shaocong, the roommate of the deceased Chen Pingfan in the jumping case." He said.

Han Dong's face tightened, but he knew this person, the famous rich second generation in the third year of high school, and he had a holiday with him.

The video continued to play, and Lin Shaocong walked forward again, but disappeared when he was about to reach the end of the corridor.

"Tsk, the structure of the administrative building of Jiahang Middle School is strange, and it is necessary to recess a piece in the four corners to form a blind spot for monitoring. And this Liu Xinjian office is coincidentally there. Xu Qiangdong couldn't help frowning.

A quarter of an hour later, Lin Shaocong reappeared in the surveillance. It looked like he was leaving, but there was a puzzled look on his face.

In the second video, at half past seven, Ding Kangyan, the current principal of Jiahang Experimental Middle School, came and left after about ten minutes, with the same puzzle on his face.

The third video is at 8 p.m., and a young man wearing a suit and tie and carrying a large briefcase is seen on the surveillance. The young man's face was calm, and his big back was shiny.

"It's him?!" When they saw this person's appearance clearly, Xu Qiangdong and Gu Forensic Doctor couldn't help but stand up and exclaimed again and again.

It was the Jiucheng lawyer who came to the police station to bail Liu Xinjian in the afternoon, Tan Chenhuan!

"There is a situation." Xu Qiangdong motioned to Long Zhengfei to pause the video, and turned to look at Forensic Doctor Gu, "This person went through the bail procedures so quickly, and he must have moved the relationship in private." And he came to look for Liu Xinjian again in the evening, which shows that the two have a great relationship. ”

"But looking at Liu Xinjian's reaction in the afternoon, they don't seem to know each other." Forensic Gu obviously understood what he meant.

"I have a hunch that this person should have some clues." Xu Qiangdong's eyes flashed, "Even if it is not directly related to these murders, it should be able to provide some ideas." ”

"Hey, how is it a 'tyrant'?" When the last video was presented on the curtain, Han Dong, who had been silent, suddenly widened his eyes.

"You know?" Xu Qiangdong was a little surprised.

Han Dong nodded, "His name is Zhang Baojun, nicknamed 'Tyrant', he is our class teacher, and he is also the leader of the third grade group of high school. ”

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"The lounge next door has sofas and reclining chairs, so if you are sleepy, you can go and rest first." An hour and a half later, seeing Han Dong and Anqing half-squinting and nodding like pounding garlic, Xu Qiangdong came to the front and gently woke them up.

"Uncle Xu, you just said that you have sent someone to find Pan Jie to make a record, so I have to wait for him here." Han Dong beat his spirit, "I also want to know who took those photos and why they were framed." ”

An Qing on the side also said that she would wait here.

Xu Qiangdong shook his head and didn't care anymore.

The wait did not last long, and half an hour later the buzzing of cars and noisy talking could be heard in the compound of the police station.

"Looks like several suspects have already arrived." Xu Qiangdong couldn't help but show a satisfied look on his face.

He picked up the walkie-talkie on the table and ordered the police in the police car: "Take the four suspects in Liu Xinjian's poisoning case to different interrogation rooms to make separate records, and bring Pan Jie to the office." ”

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"So, you don't know who is adding WeChat?" In the office, Xu Qiangdong emphasized again.

Pan Jie nodded and handed over the phone: "Yes, that person sent these photos after adding WeChat, and then deleted his friends as soon as possible." ”

Han Dong approached and found that this was indeed the case. In addition to the photo, there is only a greeting message sent by Han Dong in the chat interface, but there is a red exclamation mark next to the message, and the bottom is written "You are not a friend of the other party".

However, the interval between the time when the photo is sent and the greeting message is sent is only half a minute.

"Obviously a newly registered WeChat account," Xu Qiangdong pointed to the other party's blank WeChat avatar, "I just want to tell Han Dong about this through you, and the name is also very meaningful—mayfly." By the way, do you all know mayflies? ”

Several people say that it is, the so-called "life and twilight death", which is talking about this small insect. And this WeChat account has only existed for a few minutes.

"I've tried to re-add this person during the day and even borrowed someone else's phone. It's a pity that it's completely useless and I can't add it again. Pan Jie said.

"The murderer's only purpose has been achieved, and he will definitely not continue to log in to his account." Gu Forensic Doctor said, "But there is one thing I can't figure out, why didn't he just add Han Dong's WeChat account?" ”

"Maybe I don't know his account." An Qing guessed, and glanced at Han Dong at the same time, but saw that the latter pursed his lips and looked solemn, as if he was contemplating.

"No, it can't be." Xu Qiangdong retorted, "If the guess is right, the three murders in Jiahang Experimental Middle School were committed by one person, and the other party left a four-character death declaration at the scene, obviously aiming at Han Dong." A serial murderer who is so perverted has a high IQ and anti-reconnaissance skills that it is easy for him to find other people's contact information in a society with a high degree of transparency of personal information as long as he wants. ”

"I think that the other party may just be for show, or maybe he wants to defeat Han Dong from the psychological level first."

As he said this, his voice suddenly turned low, and it seemed to sound a little deep.

This analysis should be correct, Han Dong said secretly in his heart. According to the meaning of the two ghost children, these people must have died at their hands, and they also planned to kill more people just to torture themselves. But he couldn't tell the police uncle about it, because he didn't believe that dreams could come true until yesterday.

"But the good news is that we now have a breakthrough direction." Seeing that the atmosphere had become solemn, Xu Qiangdong hurriedly puffed up again, "I don't know if it's out of showmanship or other reasons, there is no problem with the surveillance video of the administrative building this afternoon, so we have found out the list of all the people who entered and left Liu Xinjian's office during the period before and after his death, and summoned four suspects." If nothing else, the killers of the serial murder are among them. ”

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"The No. 1 suspect, Lin Shaocong, Liu Xinjian asked him to meet in the office at seven o'clock, wanting to know about the situation of the deceased Chen Pingfan, but when he arrived, he found that the office was locked and left after waiting for a while. As for Chen Pingfan's actions before his death, we..."In the lounge, Xiaoxin was holding a notebook and was seriously reporting to Xu Qiangdong. Originally, Han Dong and the three of them were supposed to come here to rest, but Han Dong kept shaking his head and refused to leave, so Xu Qiangdong put the reporting location here.

The main thing is that I don't want them to hear information related to the case.

Xu Qiangdong waved his hand, he was completely clear about what was going on, Chen Pingfan made a phone call after returning from self-study last night, during which his tone was loud and excited, and after the call, he slammed the door in a huff, and even the boys in the dormitory next door could hear it clearly. An hour later, he fell to his death.

Xiaoxin responded and explained the transcripts of the remaining three suspects one by one.

Principal Ding Kangyan said that he came to Liu Xinjian to discuss the two cases in the morning, especially the rape and murder case of Liu Minhui, which has had an adverse impact on the reputation of the school. But he also found that the door to the latter's office was closed, and he waited for a moment before leaving.

What is surprising is that the No. 3 suspect, Jiucheng lawyer Tan Chenhuan, is a person with shocking news, and he planned to talk to Liu Xinjian at night and threaten him, but now he has to hand it over to the police.

And Xu Qiangdong only glanced at the materials he presented, and couldn't help but exclaim in shock: "What, it's actually this thing?!" ”

At the top of the material, there are more than a dozen big characters clearly written in black and white -- the case of Lu Liujiang, the former principal of Jiahang Experimental Middle School, jumping off the building.

Xu Qiangdong's eyes were sharp, and after a quick browsing, he handed the materials to the forensic doctor on the side: "I didn't expect to be involved in an old case, it seems that there is another hidden story in that case." ”

"You can wait for the old case to be done after the matter is here," I didn't want to look at the forensic doctor, and said in a deep voice after putting it back on the table, "The most important thing at the moment is to find out the murderer as soon as possible and give an explanation to the family and society of the deceased." ”

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When Xiaoxin's report was completed, Xu Qiangdong motioned for him to leave first, and then turned to Forensic Doctor Gu: "What do you think of these four suspects?" ”

"Except for the student named Lin Shaocong, the other three have a motive to kill Liu Xinjian." Gu Forensic Medicine pondered for a moment and then replied.

"Partially agree with you." Xu Qiangdong nodded and said, "Lawyer Tan may want to borrow this material to open his mouth or ask Liu Xinjian to open the door for convenience, because the latter refuses and kills." Zhang Baojun was the reason for his position, and when I was investigating during the day, I heard some words saying that he was fully capable of becoming the new teaching director, but Liu Xinjian occupied the position and often used excuses to make things difficult, so the two had a disagreement. ”

"But the most suspicious of the three is the current principal Ding Kangyan." After a pause, he added.

According to the materials provided by Tan Chenhuan, the reason why Lu Liujiang, the then principal of Jiahang, jumped to his death ten years ago was because Ding Kangyan and Liu Xinjian were behind the ghosts. The two not only framed and poured dirty water, but also joined forces with some teachers to strike classes and openly boycott him. In the end, things got big, and some of the media that received the benefits were chaotic, causing Lu Liujiang's wife to be separated and die in Mingzhi.

Forensic Doctor Gu showed a clear expression: "If this experience is true, then it is the sword of Damocles hanging over Ding Kangyan's head." According to the records, the location of Liu Xinjian's office was personally designated by Ding Kangyan ten years ago, and perhaps he had the idea of cutting the grass and eradicating the roots at that time. Moreover, he also has the ability to disconnect the school's power supply system. ”

"It's just that I don't know where this lawyer Tan got these secrets." Xu Qiangdong added, "Also, don't jump to conclusions too early, Gu Forensics." At present, suspect No. 1 has no motive to kill, but maybe we just haven't found the clues and relationships that are hidden. ”