"And what did you call me for?" Qin Fei asked in a low tone.

Shen Zezhi said: "We want to know a little bit about your mother. ”

"I've said it many times."

"I know, but we need your cooperation. I sympathize with you when something like this happens, our goal is the same, to find your mother's killer as soon as possible, what do you say? Shen Zezhi said softly.

Qin Fei looked up at Shen Zezhi for a while, and nodded slowly: "You ask." ”

Shen Zezhi asked, "Have you heard your mother say that she had a conflict with someone?" ”

Qin Fei shook his head: "No, the neighbors around our house are all self-employed, and they get along well with each other." My mom is a mean person who sometimes speaks harshly, but has a good heart. This neighbor knows. ”

"Did your mother tell you before the accident or did you notice any unusual behavior or emotions in her?"

Qin Fei shook his head and said, "The last time I came back was during the Chinese New Year, usually my mother and I only contact me by phone, and she just asks me about my current situation. So I don't know if there's anything unusual about her. ”

Shen Zezhi nodded: "Okay, that's all for today, we will look for you if necessary, I hope you don't leave Jinjing City recently." ”

Qin Fei asked tiredly, "When will my mother's body be buried, I don't want her to lie in the cold morgue all the time." ”

Shen Zezhi stood up and said, "We will step up to solve the case and strive to catch the murderer as soon as possible." ”

Qin Fei showed a little mockery on his lips, and left without saying anything.

"He doesn't trust us." Ji Ziyue didn't know when he came to Shen Zezhi's side.

Shen Zezhi nodded, this is also expected, it has been almost four months since Qin Qiaomei was killed, but the police have no way to give him an explanation.

"There's news from Guan Xin." Qi Kai came over and said.

Shen Zezhi and Ji Ziyue glanced at each other and hurriedly went over to look.

Guan Xin held Deng Ruoyi's mobile phone and said: "The SIM card of the mobile phone has been unplugged, and the mobile phone has also been restored to factory settings, which can be said to be very clean." Ordinary people can't find clues, but I still found something. ”

Guan Xin said proudly: "I found Deng Ruoyi's mysterious boyfriend, according to the chat history cached on the phone, I found the IP address where he last logged in to this QQ number, and the location has been sent to you." I've checked that it's an Internet café. I'll send you the recovered chat history as well. ”

A chat log appears on the screen:

Lianzhen: Are you really willing to come out and see me?

Whisper: Of course, I promised you. We said we would go to see Ye Da together.

Lianzhen: Yes, yes, when will we meet?

Say: See you on the spot.

Lianzhen: Okay, dear love you, see you then, I have a surprise for you!

Words: ??? Surprise? What surprises?

Lianzhen: You'll know when the time comes.

Words: Okay, then see you tomorrow, love you.

Love True: Love you.

After reading this chat record, Ji Ziyue said: "Looking at the status of their chat, Deng Ruoyi shouldn't be the first time to see 'Lianzhen', she didn't ask 'Lianzhen' how I found you, or a token or something." ”

Qi Kai said: "Not necessarily, 'Lianzhen' may have sent her photos or something." If they had met, Deng Ruoyi's roommate would have heard more than just about this mysterious 'love truth'. ”

Ji Ziyue looked at the chat history for a long time, showing a little confused expression.

Shen Zezhi asked, "What do you see?" ”

Ji Ziyue said: "What is that 'Ye Da'?" People or what activities? Deng Ruoyi said, "We said we would go to see Ye Da together." 'That love is really three times in a row, either he forgot about it, or he ......"

"Or, this lover really can't wait for Deng Ruoyi to meet 'Ye Da'. It can be seen from the tone in which they talked about this 'Ye Da' that the two of them should be very familiar with this Ye Da. "Shen Ze's way.

Shen Zezhi thought for a moment and asked the concern on the other end of the video: "Is there any clue about Deng Ruoyi's computer?" ”

Guan Xin said: "No, her computer is completely broken, the motherboard has been replaced, and I can't find any other traces." ”

Qi Kai said: "I asked the person who repaired the computer for Deng Ruoyi, and the replaced motherboard has been sent and disposed of, and there is no possibility of getting it back." ”

Shen Zezhi nodded and said, "You continue to look for clues, don't let go of any clues, Ziyue and I will go to Deng Ruoyi's dormitory to have a look." ”

There were four people living in their dormitory, all in the same class. Deng Ruoyi's bed was by the window, her bedding was still neatly placed on the bed, and her belongings on the table below were also neat, and she didn't look like she had been moved.

The other three girls looked at the two of them, and there was some surprise in each other's eyes. They don't look like policemen. Shen Zezhi is like a star, that is, Ji Ziyue's big eyes and fair complexion, and there are two cute dimples faintly when he smiles, which makes people unable to think of such a serious profession as a policeman.

Shen Zezhi looked at them for a while and turned around and asked, "What does Deng Ruoyi usually like to do?" ”

A girl who looked a little more lively said, "She likes it...... Novel. ”

"Novels?" Noriko said: "She likes the detective reasoning type? ”

"Huh? How do you know. The girl said, "Ruoyi is a detective fan. ”

Shen Zezhi asked, "Do you know what 'Ye Da' is?" ”

Several of the girls shook their heads.

Shen Zezhi and Ji Ziyue returned to the bureau and analyzed the situation with everyone. Obviously, this 'Ye Da' is the key, but it is still too difficult to find out what is based on these two words.

Just when everyone was at a loss, Sang Yunqing brought new clues to everyone.

Sang Yunqing handed the report in his hand to Shen Zezhi: "I found the DNA of the second person on Yang Yun's body. ”

Qi Kai asked, "Is it the murderer?" ”

Sang Yunqing said: "I don't know, but this DNA is extracted from blood." ”

Shen Zezhi: "This means that there may be a third person at the scene at that time?" ”

Ji Ziyue: "This case is really getting more and more complicated. ”

Sang Yunqing said: "I want to go to the scene of Yang Yun's death and investigate again." ”

Shen Zezhi nodded: "Okay, Qi Kai, you and Yunqing are going to the scene." ”

Qi Kai said: "Okay." ”

Shen Zezhi and the others went directly to the Internet café where Deng Ruoyi's mysterious boyfriend logged in to QQ for the last time. But nothing was gained. Guan Xin was precise about which computer, but months had passed, and they had only found a few ID numbers in the end, which might have been registered by the mysterious boyfriend. As for the surveillance footage, it has been emptied.

In the evening, after Sang Yunqing, Qi Kai and Zhao Jiyong came back, everyone held a case analysis meeting together and sorted out the clues in their hands again.

Zhao Jiyong said: "I went to Zhongzhou City to see the scene, and it must be the same murderer in our case, and they all have a branded totem on their left hand. ”

Zhao Jiyong distributed the photos of the scene to everyone.

Qi Kai asked: "This case happened on May 6, and today is May 20, why is this case only discovered now?" ”

Zhao Jiyong explained: "The case was discovered on May 6, but the Public Security Bureau of City D and Jinjing City did not inform each other of the case, so it was not discovered. Now that this case has been investigated by our special case team, we have discovered the similarities between the two cases. ”

Ji Ziyue called up the totems on the left wrists of several deceased people and enlarged them.

"I think it's a totem that looks familiar, like I've seen it somewhere."

Kikoyue picked up the black marker and drew the totem on the display board next to him. The totem is divided into three parts, overlapping front and back. At the end is an upside-down cross, the top half of the cross is an inverted five-pointed star, and the outside of the five-pointed star is a circle.

Ji Ziyue said: "This is the totem." This totem is called the Satan totem. Satan is a biblical character, and it is said that Satan was the serpent who tempted Eve to eat the apple. In the Bible, Satan is also sometimes referred to as the fallen angel Lucifer. Lucifer's refusal to bow down to Jesus led to a battle of angels that resulted in defeat, but he led a third of the angels into the devil's land. So the meaning of this totem is to seduce, betray, and lead. ”

Shen Zezhi: "According to our analysis, the murderer does have such a character, or he wants to express such a meaning. The murderer was brutal and had strong anti-reconnaissance capabilities. When the police were slow to catch him, his crime was a show-off. ”

Shen Zezhi said in a deep voice: "The murderer stripped Zhu Feng naked and insulted the deceased. It can be seen that the murderer has a sense of resentment towards the deceased, and he not only kills the deceased, but also insults his body to vent his anger. ”

Ji Ziyue frowned: "What kind of deep hatred can make him treat a dead person like this?" ”

Shen Zezhi thought about it, and he listed the clues he had obtained one by one.

"Let's sort out all the clues we have right now. First of all, the first victim was dismembered and put in the autopsy laboratory of the forensic medical department of Cheng'en Medical College, and avoided management and surveillance, which shows that the murderer should be familiar with Cheng'en Medical College. According to our analysis of his behavior, he could not have been a student, so it is likely that he was someone who had attended Seung Eun Medical College but did not graduate. Because there are very few people who have graduated from Chengen and have not engaged in medicine-related majors. ”

"The second deceased was strangled to death in a small alley in a university town, and the murderer's methods were clean and neat, leaving no traces. The anti-detection capability is very strong. After investigation, a netizen named 'Lianzhen' known to the deceased was the most suspicious. However, we are currently unable to determine the true identity of 'Koijin'. There is also a transcript of their chat with Xin, and the deceased agrees to go to see 'Ye Da' with Lianzhen. It's a pity that we can't find out what this 'Ye Da' is for the time being. ”

Qi Kai continued: "We detected the anti-blood coagulant drug heparin in the body of the third deceased, Yang Yun, which fully proves our speculation that the murderer studied medicine today. Secondly, according to Yang Yun's social relations, the possibility of her provoking the enemy is basically zero. The murderer was given the keys to the deceased's house and avoided the deceased's husband. It can be seen that the murderer observed the deceased for a period of time before committing the attack, at least half a month. Now we have found another person's DNA from Yang Yun, but we are not sure if it is the murderer's. ”