"Okay, let's get in touch later."

"But...... You don't know the clues we got, how to solve the case? ”

"This is my condition, I can help you and let you solve the case alone, but you have to show me all the file information of this case."

The little policeman hesitated a little, is this a leak of the police department's case information......

"This ......"

"I'm a police officer like you, and your cases are all going to be sent to the General Bureau for filing, which is not a leak of case secrets, don't worry."

"Okay......"

………………

In the evening, B city center hotel.

"How?"

"It's already here, I'll sort it out and put it out." Zhang Zijun said while tapping on the keyboard.

The efficiency of the little policeman is really fast, and he immediately sent Xiaoyu's case information over.

About half an hour later, Zhang Zijun put everything out.

Sure enough, the above report is the same as what Bai Yaqing knows, the people from the criminal team have investigated the people around Xiaoyu, but they have not gained anything. are all saying that Xiaoyu broke up with her ex-boyfriend not long ago, and the next day he asked to get back together, and one more night, he didn't see her again.

"Xiaoyu's neighbor said that the night after her ex-boyfriend came to ask for a reunion, she didn't come back, but in the elevator surveillance, Xiaoyu was seen coming back again......"

"Look at this video again." Zhang Zijun put a video and said.

This is the surveillance of the corridor, at about half past five in the afternoon of the same day, a man sneaky, wearing a cap and a mask, covering his entire face, only revealing a pair of eyes. He sneaky, probed his brain, and with a stick in his hand, he came under the surveillance.

In the next second, the angle of monitoring was changed, and the picture was always there from the ceiling.

This person destroyed the surveillance picture, it should be the murderer!

"How did this person come up, is there any monitoring in the elevator?" Bai Yaqing immediately locked on this person.

"There is no trace of this person in this, and on that day, the user in this took the elevator to deliver the express."

"Could it be someone pretending to deliver a courier?"

"This shouldn't be, when the courier comes, the monitoring is still normal."

"Then ......" Bai Yaqing thought about this question.

Without any surveillance video of this person entering the floor, could it be, the people on that floor...... Excluding all outsiders from committing crimes, only those who live here will know so much about the monitoring distribution here.

Owner...... It's possible......

"Look, is there a problem with the owner?"

"Not really, but there is one who goes out at noon and comes back the next afternoon." Zhang Zijun said.

It's normal to go out, and there is no law that allows him to go out.

"It's not strange, it's normal to go out and stay overnight......"

Even if Bai Yaqing lives in her current apartment, she sometimes goes to Liu Muduan's place for the night, and it is normal not to come back.

"So it's not very suspicious."

Where is it......

………………

When it was time to eat the next morning, Bai Yaqing came downstairs to Xiaoyu's house, took the elevator up and down many times, and kept watching the monitor.

She's been walking downstairs all the time, and she always feels like she can find some clues here that can help her solve the case.

Finally, Bai Yaqing locked her eyes on the stairwell......