After Fang Yu's investigation of Room 601, he had a general understanding of the situation.
As the sky slowly darkened, there was no longer a need to stay in Huayuan Estate.
Therefore, Fang Yu, Wu Linyu, and Qin Ya took the car sent by Guan Yunfeng back to the Criminal Investigation Unit.
Fang Yu believed that the investigation of the murderer should focus on the characteristics he had just discovered.
If they wanted to lock onto the murderer through these characteristics, they would have to rely on the strength of the Criminal Investigation Unit.
Therefore, his return to the Criminal Investigation Unit would be more helpful in solving the case.
However, when Fang Yu returned to the Criminal Investigation Unit, Guan Yunfeng shrugged helplessly.
Guan Yunfeng said that although Fang Yu had provided more information, they still had not identified the murderer. They had not even selected a candidate who met the requirements.
Fang Yu could understand this.
Although every case handled by the Criminal Investigation Unit had a criminal record, it would always accumulate.
After so many years, there must have been a lot of files piled up. It was not easy to find the target he wanted from so many files.
However, Fang Yu's habitual thoughtful expression made Guan Yunfeng mistakenly think that Fang Yu was doubting their criminal investigation team's ability to solve cases.
Guan Yunfeng picked up his phone and called Zhang Qiang and the others who were checking the files.
"What are you guys doing?"
"Hold on tight. If you can't find it, don't even think about getting off work tonight!”
Fang Yu and the others were stunned by Guan Yunfeng's sudden anger.
"Captain Guan, don't worry. We'll find the murderer.”
Qin Ya quickly handed Guan Yunfeng a cup of tea to calm him down.
The murderer was so cunning. If she really couldn't find him tonight, she didn't want to stay and work overtime.
However, despite Guan Yunfeng's urging, Zhang Qiang's search was still fruitless.
In the end, after going through all the criminal records for the past few years, Zhang Qiang brought a few colleagues to Guan Yunfeng dejectedly.
"Captain Guan, we've checked all the files.”
"Let's not talk about the people who are dissatisfied with the police's handling of the case. We haven't found a single person who is over 1.9 meters tall and has a criminal record.”
After Zhang Qiang finished reporting to Guan Yunfeng, he saw Fang Yu standing beside him and smiled awkwardly.
"Captain Guan, could it be that this murderer has no criminal record before?”
Guan Yunfeng's other subordinate, Ma Cheng, raised his question.
They had indeed gone through all the criminal records, but the tallest person among them was only 1.85 meters tall.
1.85 meters was quite a distance from the 1.92 meters Fang Yu had mentioned. Even if Fang Yu's deduction was wrong, it was impossible for there to be so many errors.
Therefore, the only explanation for not being able to find the murderer was that the murderer had never committed a crime before. In this way, there was no record of the case in their criminal investigation team.
Once Ma Cheng raised this question, everyone agreed.
Fang Yu also felt that Ma Cheng's suggestion made sense.
However, Fang Yu believed that his deduction was definitely not wrong.
The murderer's method of committing the crime was so cruel, and every part of the crime was calculated.
If he didn't have a deep prejudice against the police, he wouldn't have done this.
"Captain Guan, can you expand the scope of the search?”
"First, search for people who have expressed strong dissatisfaction with the police's handling of the case.”
"Then, gather these people and search their parents or children.”
Fang Yu suggested from another angle.
If the murderer was punished himself, he might have a strong opinion of the police.
Similarly, if the murderer's parents or children, who were very close by blood, were dissatisfied with the police's handling of the case, it would also become a reason for the murderer to take revenge on the police.
"It's not impossible. Zhang Qiang, follow this train of thought and investigate again!”
Guan Yunfeng nodded in agreement.
So far, they had not found the murderer, so they could only follow this method.
Although the workload might increase, it was better than having no clue at all.
Moreover, Liu Yueyue's mother's life was still unknown. It didn't matter if they were tired. If they found the murderer earlier, Liu Yueyue's mother might still have a chance of survival.
"Captain Guan, I think of someone. I wonder if he could be the murderer.”
Just as Zhang Qiang and the others were about to check the files again, Qin Ya suddenly spoke.
"Who is it?"
Hearing Qin Ya's words, Guan Yunfeng and the others all said in unison.
At this time, every clue could become the key to solving the case.
"Captain Guan, do you still remember Captain Shen?”
Qin Ya asked tentatively,
"Captain Shen?"
"Are you talking about my master, Shen Zhennan?”
Qin Ya suddenly mentioned Shen Zhennan at this time, which made Guan Yunfeng a little confused.
Shen Zhennan was the previous captain of the Criminal Investigation Unit. A few years after Guan Yunfeng joined the Criminal Investigation Unit, Shen Zhennan had always been by his side when solving cases due to his outstanding performance.
As time passed, the two of them slowly addressed each other as master and disciple.
However, Shen Zhennan was not young anymore. He had long retired and was idle at home.
"Yes, Captain Guan."
"Although I haven't seen Captain Shen, you've mentioned him often before.”
"I remember you saying something back then.”
"There was a time when Captain Shen had a conflict with a student during our criminal investigation team's establishment exam.”
"I don't know the details, but you said that the student's reaction was very intense. He said a lot of rude things to Captain Shen.”
"Because of this, that student was punished with a demerit and couldn't take the public service examination again for a few years.”
"After you said that, I was very curious. What kind of student would have the courage to contradict Captain Shen?”
"So I went back and specially checked some information about that student.”
"I can't remember most of the information about that student now.”
"But there is one thing that I still have a deep impression of.”
"That's the height of this person. He's actually 194 meters tall!”
"I've always paid special attention to tall people, so I definitely didn't remember this person's height wrongly!”
Qin Ya said as she recalled.
Guan Yunfeng had also stubbed out his cigarette. His entire body was shrouded in smoke, and his expression was complicated.
He tried hard to recall the person Qin Ya mentioned.
"You mean Sun Ke?"
After a long time, Guan Yunfeng finally remembered a name.
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