At the police station, after Long Zihan hung up the phone, he said to everyone seriously: "This month, counting today's brick-throwing case, there have been 6 reports received by various police stations in Shanghai. Pen × fun × Pavilion www. ｂｉｑｕｇｅ。 info and the previous 5 incidents, none of them are in the same place, but they are all lively places. ”

Zhao Xiaohu said in surprise: "What? 6 cases? It's not the same place?"

Long Zihan nodded and said, "I don't know whether to say that I am lucky, there is only one victim in 6 cases, or whether to say that the victim who died on the spot is unlucky." ”

Mo Bei sighed and said, "You must find out this person, you can't let him continue!"

Liu Yuanheng asked, "Do you think it was done by the same person?"

Mo Bei nodded and said, "Long Shao thinks so too!"

"Yesterday I was in Captain Yang Bin's district, and I also encountered such a brick-throwing incident. Judging from the shape and color of the turn, it is the same as the bricks in today's case. I'm just skeptical, though. Whether it was done by the same person or not can only be determined by waiting for Yang Bin to send evidence for comparison. ”

Zhao Xiaohu asked: "What is the purpose of the murderer?

"This is a question you should ask a professional!"

Zhao Xiaohu blinked his eyes and said, "But Erin is not here!"

Just as his words fell, a familiar voice came: "What a coincidence, it seems to be talking about me!"

Zhao Xiaohu smiled stupidly: "It's really that you can't talk about people during the day, and you can't talk about ghosts at night!"

Erin rolled her eyes and said, "The old lady is here for business!"

Long Zihan threw out a set of photos and said, "What do you think about this case?"

Erin said: "If it was the same person, then I suspect that this person has an anti-social personality. ”

Mo Bei asked, "What do you mean?

"Anti-social personality is a kind of criminal personality disorder, they have a poor tolerance to frustration, lack of morality, guilt, emotional immaturity, irritability, violent behavior, love self-centeredness, lack of self-control, and often cannot anticipate the negative consequences of their anti-social behavior. Sexual personality disorder is often accompanied by alcoholism, breach of trust, disorder, job failure, frequent migration, and prison life. ”

Mo Bei asked rhetorically: "So, it is very likely that this murderer is unsatisfactory in life or work, and thinks that the society is unfair to him, so he takes revenge on the society?"

"Bingo!" Erin snapped her fingers and said, "That's it! Moreover, it can be seen that the murderer threw bricks in a random and improvised vent, and from the background of the deceased, I am afraid that no useful clues can be found." ”

"I think so too!" Long Zihan nodded and asked, "Do you have something to look for me?"

Erin sat down, leaned back in her chair lazily, and said stupidly, "Yes, and it's a private matter." However, it is a very important, fatal private matter!"

Long Zihan said: "Since the key evidence has not been found out of any clues, let's talk about this first." When the evidence from Yang Bin's side comes, send it directly to the forensic studio, and disperse!"

"Yes!" the crowd agreed, withdrew, and closed the door for the two of them.

Seeing that the people were gone, Long Zihan asked, "What's the matter?"

Erin said: "I found out this morning that Chu Muchen's book contained a threatening letter. The content on it is terrifying!" Erin handed the letter to Long Zihan.

Long Zihan took a look and was stunned.

On the letter was a sketch of a man wearing a mask, vivisecting Chu Muchen lying on the dissection table.

Although it is black and white, it is enough to make people feel creepy.

And on the side of the drawing paper is written: You will be the object of my next dissection.

Long Zihan asked, "What did Chu Muchen say?"

Erin said: "He said that this is the third letter, and the first two letters have the same content as this one, but he threw it away. He told me to ignore it, saying it was probably jealousy among colleagues or a prank by a student. But I could see that he was lying, and he himself was a little worried. ”

Long Zihan sighed and said, "It's really sad that there is a wife who studied psychology and can't lie if she wants to!"

Erin glanced at Long Zihan and said, "I'm already worried, can you stop being so hanging?"

Long Zihan put the letter away and said, "Tell Chu Muchen not to touch the threatening letter next time you receive it, so that we can find fingerprint clues." ”

"I've told him that, he knows. But ......"

Without waiting for Erin to finish speaking, Long Zihan took over the words and said, "Don't tell your parents and Yiren, right?"

"Yes!" Erin nodded and said, "Mom and Dad are old, and Yiren is pregnant with a child, don't let them worry." ”

Long Zihan nodded and said, "I understand, in addition, I asked Mo Bei to follow Chu Muchen." ”

"That's great, I'll go back and tell Chu Muchen that it's reasonable for the professor to ask for an assistant, so I'll be wronged by Mo Bei to be his assistant incognito for a few days......"

In the afternoon, the broken brick that was brought back from the scene of the crime had been put together by the Chuyi people, and the fingerprints on it had been smoked.

Among the evidence sent by Yang Bin, in addition to fingerprints and shoe prints, there is also a brick that has been put together.

It was confirmed by the Chuyi that the fingerprints on the bricks of the two cases were the same and the shoe prints were the same. Therefore, this case and yesterday's brick-throwing case were committed by the same person.

It can be seen that Erin's speculation is correct. The other party has an anti-social and social personality, and he is taking revenge on society.

"We detected white powder on the bricks, and after testing, it was limestone, calcium carbonate and a small amount of calcium hydroxide, which is lime powder," Chuyi said. ”

Long Zihan nodded and said, "Hard work!"

Then, looking at everyone, he analyzed: "The locations of the 6 cases are different, but they are not close to each other, and if you look carefully at the map, these six places almost revolve around Chaoyang Village." The murderer may have lived here, or worked. Check it out!"

"Long Shao, Guangming Lane is also in this circle, why only check the area of Chaoyang Village?"

Long Zihan knocked Zhao Xiaohu's head, and said with hatred: "Do you think that people with money and status will have an anti-social personality and a sexual personality?"

"Oh, yes, I forgot, Guangming Lane is where rich old men live. ”

Seeing Zhao Xiaohu smirk, Long Zihan shook his head helplessly, and said, "I won't be relieved if you go, so I'll lead the team myself." ”

"Long Shao, what about Mobei?" Liu Yuanheng asked with some doubts.