Chengzhou Police Station, Special Investigation Group Office.
Late at night.
Zhao Yu couldn't remember how many times he had stayed up all night to analyze a case ever since he became a criminal police officer. Although the location had changed many times, and he had even been overseas, the whiteboard in front of him was always the same and familiar.
To be honest, Zhao Yu was very tired, especially after returning from Korea. He didn't feel as energetic as he used to be.
Also, he wasn't sure if it was because he wasn't acclimatized, or if it was just a psychological effect, but his tinnitus, which had been recovering smoothly, was acting up again.
Maybe … I should really take a good rest?
Actually, Zhao Yu knew his own condition very well. Although there was a big case, ever since he had arrived in Chengzhou, he hadn't really stayed up all night, so he didn't feel too much pressure.
After all, he had solved too many old cold cases. From the beginning, he didn't really think much of the murder diary case.
From Zhao Yu's point of view, this case happened on campus. Although it was an old case that happened more than twenty years ago, there were obviously more clues to be found in this case than in the cold cases that he had investigated before.
So, he always thought that solving this case would be like before, a matter of course!
Plus, there were more and more clues, especially since they had collected important suspect samples from the corpses. As long as they could find a suspect, they could compare them.
Now, they had confirmed one of the victims. So, Zhao Yu felt that the day of solving the murder diary case was not far away!
So, Zhao Yu decided to go through the case again tonight, regardless of Miao Ying's objections.
Just like many times before, he could faintly feel that the truth had already appeared in front of him, but he just hadn't caught it yet.
"Team Leader Zhao," Captain Mou Yongen, who was beside Zhao Yu, reported, "we have found the police officers who were in charge of Xin Lili's case.
But … the two police officers have already retired. You know, at that time, we would receive similar cases every day, so they don't have any impression of it … "
"Mm …" Zhao Yu nodded. From his point of view, although the victim's information was important, it wasn't very useful in solving the case.
This was because this case had a very clear element of serial murder. The murderer had chosen the victims in a hidden environment.
Coupled with the special identity of the victim, it would be very difficult to investigate the case through the victim's interpersonal relationships.
Previously, Captain Mou had sent a large number of police officers to search for the relevant personnel according to the names and information provided by the cockroach.
However, so far, there was no useful information. Although the police found a few people who knew Xin Lili or Sang Xiaoxiao, they all said that they were not familiar with Sang Xiaoxiao!
In most murder cases, as long as the corpse could be identified, the suspect could be found. The murderer must be someone who had a grudge or dispute with the deceased.
However, the most difficult part of the Murder Diary Case was that the murderer might not have any other relationship with the deceased. The murderer might have chosen the murderer based on certain characteristics.
In other words, this case was not only an old cold case, but also a random serial murder case!
Hence, Zhao Yu felt that if he wanted to solve the case, he would have to work on Liu Weiyi's manuscripts, the residents of the Zhizhen Building, and the school.
At this moment, Zhao Yu stood in front of the whiteboard and was re-filtering the clues he had so far, trying to find a way out.
"Team Leader," Zeng Ke, who was checking the video of the class reunion, reported to Zhao Yu. "One of Liu Weiyi's classmates claimed that the guard of the Zhizhen Building, Lao Song, had once asked his nephew to take over his shift for two months …"
"Oh?" Zhao Yu snapped his fingers and only said one word, "Investigate!"
"Understood!" Zeng Ke nodded, then said, "Also, a teacher said that one summer, because the main teaching building of the school was being repaired, a temporary passage was opened in the west of the school.
"That passage happened to pass by the Zhizhen Building. Could the murderer have brought the deceased in through that passage?"
"Remember to contact this teacher tomorrow," Zhao Yu said. "Then, ask for more details! After all, the construction was done in a short period of time, but the murder case lasted for several years! "
"Okay." Zeng Ke nodded and continued to check the video.
"Boss, I have someone here who said that he had seen Liu Weiyi's manuscript. It was a blue notebook, and he said that Liu Weiyi's writing was a little sloppy, so he couldn't read it at all …"
"Such clues …" Zhao Yu waved his hand and said, "Just write it down in the notebook. You don't have to report it to me!"
"Oh …" Ran Tao quickly shut up and continued to check.
At this moment, Zhao Yu had a general idea in his mind. He knew Victim Number Five, Sang Xiaoxiao, quite well.
After all, in his previous life, he had often dealt with women with such special professions.
Zhao Yu believed that, according to Xiao Qiang and the others' descriptions, Sang Xiaoxiao should be a senior employee of a Xihai nightclub.
Coupled with her temperament, appearance, and so on, Zhao Yu could tell that it would be expensive to ask Sang Xiaoxiao out.
He recalled that, when he had just traveled to this world, he had encountered the embarrassing incident of "true love is priceless," with Yang Hong.
Therefore, Zhao Yu judged that, for a woman of high status like Sang Xiaoxiao, even if the other party offered a lot of money, she wouldn't accept going to the school dormitory!
The places they went to were usually star-rated hotels.
In addition, Zhao Yu knew that if Sang Xiaoxiao were to appear in a high-end place like the Xihai Hotel, she would usually only accept frequent guests.
If the guest was a stranger, the hotel would take measures, for fear that the stranger was an undercover agent.
Therefore, if the murderer had asked Sang Xiaoxiao out through proper channels, the hotel would definitely know about it.
Therefore, Zhao Yu judged that Sang Xiaoxiao should have been kidnapped by the murderer using violent means and forced to go to school.
According to this line of thought, the murderer must have had a very ordinary financial situation at the time.
Also, judging from the corpses, Zhao Yu had reason to suspect that the murderer had a certain standard for choosing his victims due to the fact that the appearance and height of the five victims were slightly similar!
In Liu Weiyi's manuscript, the victims were all college students from other schools.
However, the real victims were all special professions.
Then … was there a hidden reason behind this?
Perhaps, Liu Weiyi's murder diary is just a trigger, and the mysterious murderer has long had the intention to kill because of his twisted mentality or because he had suffered some kind of blow!?!
Did he just use Liu Weiyi's manuscript to fulfill his long-cherished wish to kill?
So … Who could this person be?
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