Chapter 2134: Guard

"If it's not a student, who else could it be?" Ran Tao's eyes stared like lanterns, "It can't really be... the guard!? Could it be... I guessed it right again? Am I really that amazing?"

"God, you big-headed ghost! But... the doorman..." Zhao Yu pondered and said, "I have indeed considered this aspect before, well, only the doorman enters and leaves the dormitory without people, so that no one will be suspicious! "

"Of course..." Cui Lizhu said, "The guard also has the key to the dormitory building!"

"Also," Zhao Yu said again, "the guard may have the keys to each dormitory, and when the students go to school, he can sneak into Liu Weiyi's dormitory and read his manuscripts!

"Liu Weiyi said that he often puts manuscripts on his bed...

"Perhaps, the guard accidentally saw his manuscript and was deeply attracted..."

"There are several dark storage rooms in the Zhizhen Building. If he imprisoned the girl there, the outside world would have no way of knowing..." Ran Tao echoed, "Also, the most important thing is that the guards are different from the students. I will graduate, and I have to come to work every summer vacation!

"No matter how you look at it, they are the most qualified!"

"I..." Cui Lizhu said, "Didn't we investigate the guard before? Where is the information?"

"It's here!" After Zeng Ke replied, he searched for information and raised objections, "But... if it was the guard who led a woman into the school, wouldn't it be too obvious if someone saw it? "

"Tell me," Cui Lizhu said, "could it be that the murdered girls were not lured by the murderer, but kidnapped directly by the murderer?

"For example, is there any inconspicuous small door in the school, and the guard has a key? Binding someone in from there will not arouse anyone's suspicion?"

"Well... this problem is not difficult to solve," Ran Tao nodded, "Just ask the school and you will know!"

"But...why?" Wu Xiumin said suddenly, "There must be a reason for a murderer to kill someone. If it was a guard, why would he do such a thing?

"Also, if deduced from the deformity theory, I feel that if the deceased were all college students, it might have something to do with the guard!

"Because he saw female college students every day, he felt envious, so he attacked college students!

"However, these victims are all social workers, and they may still work in special industries," Wu Xiumin said, "I feel that the theory of guards is a bit unreasonable!"

"That's right..." Cui Lizhu said, "The school guards, whether they guard the gate or the dormitory, are usually very old people, right?

"Do they have this ability? Even if they have this ability, they are so old. If they want to kill someone, they would kill them already?"

"This is purely your subjective imagination!" Zeng Ke said, "Who said the guards must be old? When we were in college, the guards were all young..."

"Nonsense, the police college you went to, the guards are all armed police soldiers, of course you are young!" Cui Lizhu stuck out her tongue, "I think you are purely to show off that you went to college!"

"..." Zeng Ke was speechless.

"It's useless to just talk, let's speak with facts!" Ran Tao opened the security information Zeng Ke found,

I was stunned after just one glance, "No way? So many?"

"That's right!" Zeng Ke said, "At that time, there was no security company, and all the guards were employed by the school itself. , and something happened suddenly at home...

"So the mobility is very large, and there are many positions. In the few years when the case happened, there must have been at least a hundred?"

"Stupid you!" Cui Lizhu patted Ran Tao, "You have a good view of the big picture. You only have to look at the guards of the Zhizhen Building. Can there be 100 of them? Mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm..." After a blink, it was Cui Lizhu's turn to be depressed, "What...what is this all about?

"Why don't you mark the job position of the doorman? Can't you tell who is on duty in Zhizhen Building?"

"Yes," Zeng Ke pouted, "I'm afraid the school has to figure out a way! It's a miracle to find these records through the ledger. Don't forget, it's been more than 20 years!"

"In that case," Zhao Yu said to Zeng Ke, "then you should contact the school, find out the guard of Zhizhen Building, and compare it with the DNA found on the body bag first!

"Forensic doctor Zhang said that according to the DNA judgment, the suspect is a man, and the doorman is also a man, so the suspicion cannot be ruled out...

"Besides, the guard is familiar with the Zhizhen Building and the school, and there are many keys. The suspicion of committing the crime is indeed not small! We will focus on investigating in this direction!"

"Yes!" Zeng Ke and others nodded.

Speaking of this, the temporary case analysis meeting should come to an end. Unexpectedly, when everyone was preparing to work separately, a police officer sent a report to Zhang Peipei.

"This is..." Zhang Peipei opened the report and said, "The analysis of the suspect's genetic profile has come out. This person should be a native of Chengzhou, and has a relationship with the Li family from Fengjun, Zhuzhou, and Menxia. Close blood relationship, his possible surnames are 41% Li, 23% Yang, 15% Ji, 11% Wu... and 8% other surnames..."

"Wow, it's really amazing, you can even deduce the surname!" Cui Lizhu exclaimed, "Fortunately, Miss Ben washed her hands early!"

"You don't call it the golden basin to wash your hands," Ran Tao joked, "Isn't it just right that you call it reforming evil?"

"In this case," Zhao Yu said to Zeng Ke, "speed up and see what the guard's name is at Zhizhen Tower first?"

After speaking, Zhao Yu opened the list of guards and began to check carefully. Unfortunately, this list was a salary slip, and the age of the guards was not displayed on it.

So Zhao Yu asked Zhang Peipei: "Forensic Doctor Zhang, can we determine the suspect's age at that time through the DNA of the suspect?"

"It's very difficult," Zhang Peipei said, "Our current method is to observe the repairing properties of 8-OHdG, because as people age, the DNA repairing ability gradually declines!

"Also, through the overall methylation level of DNA and the length of telomeres, etc., a rough judgment can be made!

"However, all the current research methods are not applicable to our situation, because the DNA we extracted is not fresh, and if we do experiments, there will be huge errors and are full of uncertainties!"

"Oh, I see!" Zhao Yu nodded, "You said a lot of technical terms, in fact, just to tell me two words - no way!"

"..." Zhang Peipei was speechless and blushed.

"But it doesn't matter, at least we have conclusive evidence," Zhao Yu said, "It's a big deal, compare it with these more than a hundred security guards, I don't believe we can't find a suspect!"

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