"Don't sleep!" I immediately jumped out of bed, put my phone in my pocket, and woke up Hei and the living dead, but the latter said that he wanted to sleep for a while, so Hei and I went to the temporary office.

Du Xiaoworm was also present, she did not have an in-depth autopsy, because Chi Xinyan's family did not agree, her parents' traditional concept was too strong, and the daughter of Xun Si was cut off by the murderer, and it was also a whole corpse, but when she was disemboweled, she would die unrestlessly, no matter what Du Xiaoworm said, it was useless, so she only took a sample of tadpole liquid from the deceased's lower body, and directly sewed Chi Xinyan's head back with needles and threads for her family to take home.

The four of us gathered in front of the computer screen to look at the recovered surveillance footage, there were two segments, each of which lasted less than two minutes, and the murderer entered the Chenguang Hotel and went out.

The technical department said that the deleted surveillance footage was not operated by external intrusion into the system, but by personnel inside the hotel. After these two places are deleted, it is difficult to find out when the surveillance video is fast-forwarded and played, unless you keep staring at the screen for a long time.

At 10:03 a.m., a thin figure walked into the door of the hotel, not even a means to hide, approaching the elevator openly, during which the waiter stopped him to ask, the two exchanged two sentences, looking at the person's mouth as if he was looking for someone, and specially took out his mobile phone to the waiter, and then he entered the elevator.

The man came to the door of 716, knocked on the door and opened it, and then walked in, disappearing from the surveillance view.

We watched the second recovered video, and after three hours, the man left the No. 716 customer service, he carried a schoolbag on his back, and a lady's red bag in his hand, and quickly left the Chenguang Hotel through the elevator.

The reason why the technician judged that the monitoring was not deleted by intruding into the system was because not only the camera placed on the wall of the hotel, but also the monitoring of the elevator did not have the image of the man entering and exiting, and the elevator monitoring of the Chenguang Hotel was connected to the computer without the Internet. But this is really difficult for the technicians, they took a dozen copies of surveillance video screening and restoration in the lobby and elevator on the first floor and the seventh floor, and it took a lot of effort to put these fragmented frequency bands together into two complete videos that add up to less than four minutes.

We chose a section where the monitor man was most clearly pressed and paused, and zoomed in.

The man's face was roughly the same as the previous female cashier's description, with a scab on his chin, and through the proportions of the things next to him, he was about 1.63 meters tall and thin.

What we can be sure of is that we have not seen this man before, so the murderer is not the executives of Tang Huaxin's industry. Xu Rui wrote down the time and got in touch with the road monitoring center. After leaving the Chenguang Hotel the day before yesterday, Officer Ma directly stopped a taxi, chose to get off at a nearby shopping mall, and then entered the building and changed into a police uniform and disappeared.

It can be seen that the murderer knows a lot about criminal routines.

Xu Rui gave the other party a new task, and the current accurate departure time and portrait, clothing, and backpack handbag characteristics are all available. Unless the killer does what he did last time, he won't be able to locate his final whereabouts.

However, the murderer may not have expected that we would restore the deleted surveillance footage, and he would not be too vigilant.

After Du Xiaoworm finished observing the image, he went to the forensic room to see if the murderer's DNA data had been tested.

Xu Rui and Lao Hei and I decided to start with the common intersection of Tang Huaxin and Chi Xinyan, and sent the numbers of the two to the technical department, so that the technicians of the Ninth Bureau could check the same numbers in the communication records of the two deceased.

It didn't take long for us to receive an email from the technician, and when we opened it, there were seven mobile phone numbers and two landline numbers.

We took a little time to open the address book of Tang Huaxin's mobile phone, and found that eight of the nine numbers were employees of the Eastern District Entertainment City, and there was still one mobile phone number left. And this mobile phone number, which was done in 06, has been used for four years, and there has been no real-name registration. It is a black card, but it is not a black card that is deliberately done by criminals before, because at that time, you can get a new card in any store for just thirty or fifty yuan.

Not only that, this mobile phone number has two call records with Chi Xinyan today, once in the early morning, and the second time corresponds to the deleted surveillance video, that is, when the murderer blocked the hotel waiter's eyes and contacted Chi Xinyan, at the same time!

We are extremely sure that the murderer has been using this number for a long time!

What is depressed is that Tang Huaxin usually has the habit of deleting text messages and call records in time, so that the text message records between him, the murderer and Chi Xinyan are gone.

Xu Rui thought for a while, and planned to borrow a mobile phone to dial the murderer's number and let the technician monitor the number to obtain the other party's location.

When everything was ready, a thought suddenly came to my mind, and I stopped Xu Rui, who had dialed more than half of the number, "Boss, wait a minute, I have thought of a better way to know where the murderer is or where he works." ”

Xu Rui put down the phone and said, "Tell me." ”

Lao Hei looked curious.

"Since this mobile phone number may be commonly used by the murderer, he must often recharge the card." I speculated thoughtfully: "Check the recharge records of this number, and the outlets that appear most frequently must be near the murderer's residence, the place he frequents, or the place where he works." ”

"Great idea!" Xu Rui immediately asked the technician to check the black card number, and in less than ten minutes, we received another email, and took a brief look, which is the recharge of this number within three years, a total of forty-nine times.

But...... The seven records within half a year are all serial numbers, and even which online store can not be queried, and then it is impossible to check the buyer's details through the corresponding order.

But before that, in the past two and a half years, a total of 42 times, a total of 39 times in the same mobile outlet, located in a business hall on Taitung 2nd Road in the North District!

We can't help but smile and look at each other, what can thirty-nine times say? Although he hasn't gone to the physical recharge in the past half a year, this is entirely because the murderer knows how to recharge online, so he still haunts this area often, and nine out of ten are here!

Without further ado, it's almost evening, and if the business hall is closed, we can only wait for tomorrow, so Lao Hei immediately ran to the temporary dormitory to call the living dead, Xu Rui and I checked the equipment, and brewed something about the murderer's mobile phone number.

It took us an hour and a half to arrive at Taitung 2nd Road in the North District, where there was only one business hall, which looked like it was a bit old, and it was completely in line with the clues we had. We opened the store and asked the salesperson, who said that it had been open for five years.

Xu Rui asked her how long she had been working here, and she replied that it was two years.

Then I showed the salesperson a zoomed-in surveillance screenshot of the killer and asked her if she had any impression of this person. The other party said that he felt a little familiar, and he should have been here before, but he definitely hasn't been here recently.

We were relieved to hear this, and after showing our documents, we asked the business hall to cooperate with us to arrest criminals, and the other party readily agreed.

It usually closes at 9 p.m., so we still have time.

I discussed with Xu Rui all the way, and I had already figured out how to strategize, and the next moment, Xu Rui and I hid behind the next door, Lao Hei went to lurk outside, and the living dead were lying on the ground inside the counter. Now what we have to do is to lure the murderer here, and the premise must cause him to have a need and have to come to the business hall to handle it.

After we finished distributing, Xu Rui asked the technical staff of the ninth bureau to contact the operator, and sent two messages to the black card number in the official name and temporarily tampered with the balance, the first was to let the murderer know that his mobile phone owed 5,000 yuan!

He must be in a state of confusion now......

The second message roughly means "This mobile phone number has been temporarily locked due to a system error, and if you want to unlock it, you must go to the local business office to handle it, otherwise it will not be available." ”

After all, this mobile phone number has been used by the murderer for several years, and he must be reluctant to throw it away.

After the trap was released, Xu Rui and I kept peeking through the crack in the door, quietly waiting for the prey to take the initiative to enter the trap......