It can be seen that the young police officer is very dissatisfied with this incident, and even a little dissatisfied with the public security bureau where he is now.

Xiao Ning didn't answer, but asked directly: "Four years ago, when you were on duty with Zhang Liang, who was the person who was supposed to be on duty, and why was it replaced by Zhang Liang?" ”

The young officer's face changed, and he suddenly stood up, "Yes, why didn't I think of this!" Why was Zhang Liang killed that night, he had already gone home! ”

With that, he turned around and was about to leave.

Xiao Ning stood up and grabbed his arm, "What are you going to do?" ”

"I'm going to arrest someone!"

"Arrest? What do you use to arrest people until evidence is found? Xiao Ning looked out the door, "Now that the case is in my hands, I don't want you to startle the snake." You know who I am, and as long as there is a clue, I will definitely catch the prisoner. ”

The young police officer sat on the chair, and finally stopped impulsive, "Of course I know who you are, aren't you Xiao Ning, a famous case-solving genius in the Criminal Police Brigade." There are so many serial murders, you solved them. To be honest, I was even a little happy when I just learned that it was you who came to re-investigate Zhang Liang's case. Otherwise, I wouldn't have asked you if you could solve the case. ”

Seeing that he no longer showed signs of going out, Xiao Ning let go of his hand, "I hope you will fully cooperate with me." I know that Zhang Liang is a good friend of yours, but the more you get to this time, the more you should calm down. ”

The young officer nodded, "Okay, then I'll tell you about that night." ”

On that night four years ago, it was indeed not Zhang Liang who should have been on duty, but another police officer. However, the police officer said that his girlfriend had a birthday, and he had to rush over anyway and ask Zhang Liang to help with the shift. This kind of thing is not a big deal, Zhang Liangren is good, he likes to help others, and he agreed to come down in one bite.

The young police officer continued: "After that, Zhang Liang answered the phone, I asked him what was wrong, he didn't say, and left with an ugly face. I wanted to be with him, but he refused. I knew that that kind of thing would happen, and I had to follow everything I said, which is the thing I regret the most in my life! ”

With that, his fist slammed the table, and his expression became angry.

Xiao Ning looked at him and didn't speak again. When he calmed down a little, he said, "Is that police officer still here?" ”

"He's gone, he's been transferred. Only half a month after Zhang Liang's death, he was transferred, and I heard that he was promoted. He gritted his teeth, "If I had thought about changing shifts, I would have known there was something wrong with this kid!" Not long after Zhang Liang died, he was transferred away, which is obviously a thief! And he's also promoted, and there's definitely something wrong with it. ”

"It's too early to say that." Xiao Ning handed over the pen and paper, "Tell me his name." ”

Half an hour later, Xiao Ning had already left the Public Security Bureau and drove to the Criminal Police Brigade.

The third police officer is almost the same as the first, because he has a general relationship with Zhang Liang, so he doesn't pay so much attention. And the answer Xiao Ning wants already has.

In the Criminal Police Brigade, Xiao Ning put the note with his name written in front of him, "Check this person in the public security system, and the personnel transfer within a month at that time." ”

Yin Zetai glanced at it and immediately nodded.

The city's public security system was the only one who quickly investigated, and all the information about him was printed out and sent to the office.

Xiao Ning looked over.

Liu Shu, male, 29 years old, graduated from the police academy six years ago, and because of his good performance during the internship period, he directly became a regular and stayed in the public security bureau. And his uncle is the second-in-command of a sub-bureau, and it cannot be said that he stayed without a little reason for his uncle. Otherwise, there are many students who perform better than him, why is he the only one who can successfully turn positive.

And four years ago, he was transferred from the public security bureau with Zhang Liang to another sub-bureau as a squad leader.

What made Xiao Ning feel a little puzzled was that there was no shortage of team leaders in that sub-bureau at the beginning. And after Liu Shu joined, half a month later, another person was transferred from their bureau, and the person who was transferred happened to be a squad leader.

Although half a month has passed, I am afraid that anyone who cares will not feel anything. But in Xiao Ning's opinion, this is clearly to let Liu Shu transfer over first, squeeze in, and then pick a good time to transfer away a team leader and let Liu Shu sit upright.

This Liu Shu is very problematic.

Even if it was a personnel transfer four years ago, it is still recorded in the public security system. The public security is different from other departments, even the transfer of a cleaning staff will be recorded. In order to ensure that when there is any problem, as long as it is related to the inside, it can be found as soon as possible.

Xiao Ning stared at the screen for a while, and called Yin Zetai, "Focus on investigating this Liu Shu, I want to have all the information about him." And this uncle of his, I also want to know what cases they have handled. Especially this Liu Shu, what are the criminals he has come into contact with, and none of them should be left behind. ”

Yin Zetai nodded at first, and then was a little embarrassed, "Boss, this Liu Shu's uncle Liu Guoqiang was the second-in-command four years ago, and now he is the deputy director of the sub-bureau." Moreover, the director will retire soon, and it is not an exaggeration to say that he is the number one. Even if our criminal police brigade wants to investigate him, I'm afraid we will have to go through the judicial regulations. ”

Xiao Ning waved his hand, "Let's check secretly, don't alarm anyone." ”

His main purpose is actually not Liu Guoqiang. In his opinion, Liu Guoqiang is already the second-in-command, unless it involves his personal safety, otherwise, it is absolutely impossible for him to do anything to find someone to kill Zhang Liang.

On the contrary, it was that Liu Shu, who was very problematic.

It's not that Xiao Ning thinks so when he sees Liu Guoqiang's high status, but the higher the position, the less courage he actually has. Especially in the area of public security, they do not dare to go beyond the slightest bit. Otherwise, once it is found, it will definitely be a prison sentence, and the sentence will be heavier than that of ordinary people.

Xiao Ning lowered his head and glanced at the photo on Liu Shu's profile again.

A very ordinary-looking police officer, in his twenties, wearing a pair of glasses, seemed to be a little unsmiling.

He...... Could it be Zhang Liang's murderer?

Xiao Ning suddenly thought of Zhang Mengmeng, he used to have a younger sister, and he knew the heart-wrenching feeling. Even if it is for Zhang Mengmeng, for the family of the deceased, he must find out clearly.

His hand was dotted with Liu Shu's photo, and this empathy made him more and more eager to catch the murderer as soon as possible. This is the mood he does not have when he is working on other cases.

Xiao Ning took a deep breath and looked out the window.

Across the street, Zhang Mengmeng was standing there, also looking at him.