Out of the interrogation room, Gu Song went straight to Director Xia's office, accompanied by Qiao Sheng.

Because he was worried about the situation in summer time, Director Xia didn't sleep all night. For someone his age, the load on his body through the night was too great, and he was a little overwhelmed by it now.

When Gu Song pushed the door and walked into the office, Director Xia was standing in front of the window and smoking silently. Gu Song could see that he was barely holding on, but even so, he refused to lie down and rest, even if it was only for a moment.

"You're here, how's it going?" As soon as he saw Gu Song and them, Director Xia immediately cheered up. He walked over to his desk and sat down, motioning for the two of them to sit in the chair across from him.

"He still won't say anything...... Qiao Sheng lit a cigarette depressedly, and took the lead in speaking, "I really want to help him, but the situation is ...... now"

"Alas......" Director Xia sighed, "Whether as a leader or as a father, I don't believe that Xia Shi would do such a thing. But now the situation is very bad for him, what do we do next? After speaking, he looked at Gu Song with an inquiring gaze, and Qiao Sheng also turned his head away, looking expectant.

Gu Song swallowed his saliva and felt the pressure double. He thought for a few seconds and said to the two leaders: "Xia Bureau, Team Qiao, I need detailed background information on all the suspects. In addition, I need to re-check the surveillance footage of the bazaar. ”

"No problem, I'll ask someone to bring you those materials in a moment." Qiao Sheng readily agreed, and then asked Gu Song with a frown, "Do you really believe that the murderer is someone else?" ”

"If I hadn't believed it, I wouldn't be sitting here right now." Gu Song replied resolutely, "Putting aside personal feelings, the evidence that the murderer fell at the scene of the crime is indeed a bit deliberate. Since the murderer is a careful and cautious person, knows how to hide his fingerprints and footprints, knows how to disguise his appearance, and knows how to evade police surveillance, why did he make such a negligent mistake? The answer should be to frame. ”

"So, is the real murderer on the rest of the list?"

"I think so, especially the people who participated in the case on the day Xiaohai was killed, are more suspicious of the crime. For that kind of megalomaniacal murderer, it's hard to imagine that he would miss out on a good show. ”

"But......" Qiao Sheng touched his chin and said thoughtfully, "The rest of the people have no motive to commit crimes, their upbringing is nothing special, and I don't see any potential to become trafficker killers." ”

"Nope." Gu Song shook his head, "From the perspective of criminal psychology, a person will never kill someone for no reason. Even if he is a psychopath, the crimes he commits can find their roots in his past life experiences. So, there must be some experience in life that prompted the Night Killer to have the idea of killing, and there must be some information that we didn't perceive before. ”

In the next few hours, Gu Song sat in Director Xia's office, and together with Qiao Sheng, he carefully looked through the information of the rest of the members of the task force who were suspected of committing crimes.

As Qiao Sheng said, these people had a dull upbringing, no broken family background, no unfair treatment, and no prominent turning point in their lives that could lead them to the path of crime. On the surface, none of these men look like the killers of the night who brutally killed three traffickers and issued a provocation to the police. But there must be something that they have overlooked......

Gu Song reopened Xiao Qin's information and looked at it thoughtfully. After Xiao Hai became an informant for the police, Xiao Qin's job was to keep an eye on Xiao Hai. On the night of the crime, Xiao Qin was staying downstairs at Xiao Hai's house, and he was the most qualified to kill Xiao Hai and the easiest person to get by. If he lied to the police, it was he who followed Xiaohai into the house, strangled him to death while Xiaohai didn't spare a wire, and then blamed Xia Shi for the crime, all of which seems to make sense. But the question is, what was his motive for committing the crime?

According to the data, although Xiao Qin comes from a single-parent family, he has a good growth environment, a gentle personality, and is loyal and honest. Over the past two years as a police officer, he has worked diligently and conscientiously, and there is really nothing suspicious about it.

After thinking for a while, Gu Song opened Zhao Xiaolin's personal information again. This person is more familiar with his relationship, since the beginning of last month, when Zhou Tiancheng and his wife were killed, Zhao Xiaolin has been actively following up on the case of the Night Killer, and later simply became the person in charge of the case.

Zhao Xiaolin is closer to Xia Shi on weekdays, and he knows Xia Shi better, and it seems that it is easier to blame Xia Shi for these crimes. But the same question is, if Zhao Xiaolin is a night killer, what kind of opportunity did he start committing crimes?

Zhao Xiaolin was born in a remote mountain village in western Sichuan, and his parents were honest farmers. He is diligent and hardworking, with excellent grades, and has always been the pride of his elders since he was a child.

He relied on his own efforts to be admitted to the police academy, and after graduation, he became a police officer as he wished. He loves his job and has a strong sense of justice. His mind is actually very smart, but his personality is weak and lacks self-confidence, and he often gives people the feeling that he can't achieve great things.

If Zhao Xiaolin is not satisfied with the status quo and wants to punish crimes in an extreme way, kill the traffickers who are hated by the world, win people's recognition, be concerned by this society, and even be regarded as a hero by some people, it makes sense from the perspective of criminal psychology. But is it just because of this that a policeman with a righteous heart will degenerate into a ruthless killer, who will not hesitate to be the enemy of his own companions and stand on the opposite side of the law? Such a reason is too inadequate. If killing is so easy to do, how can the world be safe?

Thinking of this, Gu Song exhaled deeply. He leaned back in his chair wearily, closed his eyes, and rubbed his swollen temples. The truth was not far away from him, but he always felt that there was something missing, a reason enough to convince him to doubt.

A few minutes later, when Gu Song returned his gaze to the information in front of him, an inconspicuous address information suddenly caught his attention.

Dengtai Village, Wenchuan County, Aba Prefecture, Sichuan Province.

This is the address of Zhao Xiaolin's hometown, and before he was in high school, Zhao Xiaolin had been living in that place with his parents. Gu Song felt that this address was familiar, as if he had just seen it somewhere not long ago.

"Team Qiao......" Gu Song pointed to the information in front of him, and the expression on his face couldn't help but become heavy. I think something about this person needs to be investigated a little deeper. ”

"What's wrong, did you find out?" Qiao Sheng was already a little bored and drowsy, and when he heard Gu Song's words, he hurriedly turned his head over, glanced at the words on Gu Song's finger, and muttered again, "Dengtai Village, Wenchuan County, Aba Prefecture." Then he asked, "Is there anything wrong with this place?" ”

"Well......" Gu Song paused and said, "There is a person who is closely related to our case, and his hometown is also from this place." It stands to reason that the residents living in such a small mountain village should be familiar with each other, but the attitude shown by this suspect ......"

Qiao Sheng moved his gaze a few centimeters to the left, and when he saw this person's name, he couldn't help but be taken aback, "Why is Zhao Xiaolin?" Could he ......?"

"I'm not sure yet." Before Qiao Sheng could say the rest of the words, Gu Song interrupted him. "I still need to confirm a few things before I can come to a final conclusion. If my speculation is correct, this time we have not only found the murderer who killed Xiaohai and Zhou Tiancheng, but also the real murderer who framed Mu Zi. ”

Qiao Sheng was confused when he heard this, and asked in surprise: "You mean to say that the falling case that occurred in the First Experimental Middle School is related to the human trafficker killer?" ”

"I don't think so."

"Why?"

Gu Song shrugged his shoulders and replied, "I don't want to talk nonsense until there is no solid basis. After all, the identity of the murderer this time is more special. It's not easy for us to send our brothers to prison with our own hands......"