Returning to 2501, everyone immediately found the robot surveillance camera. It looked like a gradient-colored robot and could not be seen as a surveillance camera at all.
Lu Wan reacted quickly and immediately asked people to search for the mobile phone of the deceased Wang Qian.
Zeng Hao found the mobile phone on the bed in the master bedroom, unlocked it with the deceased's finger and found the APP that controlled the monitoring.
After opening the APP, Zeng Hao's face darkened, "It's turned off! It was turned off at 1 o'clock in the morning. The murderer had Qu Hailong's cell phone, and he should have used his cell phone to turn it off."
"The murderer's initiative to turn off his cell phone is also a clue." Lu Wan was not affected by the bad news. "This was a premeditated murder. He must have stepped here beforehand."
The murderer's original purpose of taking the phone was to open the fingerprint lock. This can be planned by visiting the location in advance.
There are two possibilities for turning off the surveillance. Either the murderer was extremely cautious and discovered that there was surveillance in the room through Qu Hailong's mobile phone. This shows that the murderer has strong anti-investigation capabilities and is extremely knowledgeable about electronic products.
The second possibility is that the murderer knew that there was surveillance in the room, so the murderer was someone known to the deceased.
A policeman came to the door and said, "Team Lu, we have asked all the neighbors above and below, and found nothing unusual last night."
Lu Wan nodded without paying much attention. The monitoring was turned off at 1 o'clock in the morning. At that time, everyone was basically asleep, so it was normal not to notice.
Glancing at Qin Youwei, who had already arrived at the scene for a preliminary autopsy, Lu Wan said to the others: "Chen Xiaoxiao, you and Bai Mo go to the security room to check the elevator monitoring of this building. The key time is after 12:30 in the morning. "
When going upstairs, Lu Wan discovered that the stairwell and the elevator were connected. If you wanted to go through the stairwell to the corridor, you had to pass through the elevator, and the elevators on each floor were monitored.
"Peng Yuetao, you and Zeng Hao go to the underground parking lot and check to see if there is a road that completely avoids the surveillance. If there is, determine the route and see which owners' cars pass by on this route. Call them Driving recorder.”
After arranging the work, Lu Wan contacted Sun Xiaokai and asked Sun Xiaokai to investigate the social relationship between Qu Hailong and Wang Qian.
At least judging from the current situation, this is a professional murder. What can lead to such murders must be sharply tense interpersonal relationships.
Fu Xingliang came to the security room and took the initiative to lead Chen Xiaoxiao and Bai Mo.
When they arrived at the security room, the security guards gave up their positions when they saw Fu Xingliang in uniform, and Fu Xingliang fiddled with the surveillance of Building 5.
Without waiting for Chen Xiaoxiao's request, Fu Xingliang directly called up the monitoring of the elevator room in the underground parking lot of Building 5.
At 12:45 in the morning, a figure flashed from the elevator and entered the stairwell. Fu Xingliang quickly turned back time.
"Slow playback at the lowest speed!" Bai Mo whispered. At this moment, all his attention was focused on the computer screen.
The quality of the surveillance picture was very poor. The man in the surveillance was wearing a sports suit with a hood on his top. He was also wearing a round hat, sunglasses and a mask.
He was holding a black plastic bag in his hand. The way he carried the bag was strange. His whole hand was inside the bag and he was grabbing the bag from the inside.
His other hand was gloved, and it wasn't hard to tell that his other hand was also gloved.
"Male, about 1.75 meters tall, with a medium build and a long face." Bai Mo said while shaking his head. "All the features are obscured, making it difficult to draw the full picture."
Fu Xingliang looked at Bai Mo in surprise. His height and body shape were intuitive and he could tell. The other person's face was almost completely covered. How could Bai Mo tell that he had a long face?
More importantly, Bai Mo said that it is difficult to draw the whole picture. Does this mean that he can also draw some other features?
Fu Xingliang, who originally thought that through today's performance, might be able to join the criminal police team, suddenly felt frustrated - what kind of monsters are these?
Enduring the sadness in his heart, Fu Xingliang called up the surveillance camera in the elevator room on the 25th floor. The surveillance angle was very poor and he could only see the back of the man. He came out of the stairwell at 1:05 and was in the room. The elevator flashed past and entered the corridor.
Then at 1:27, the murderer appeared on the surveillance camera again and walked into the stairwell through the elevator.
The murderer walked very softly and did not turn on the voice-activated lights in the corridor and elevator. All the images were captured in the night mode of surveillance. Coupled with the pixel problem of the camera, Fu Xingliang felt that this was the same as the murderer parking his car underground. There is no difference in the scene when entering the field.
"Playback! Slow playback at the lowest speed." Bai Mo spoke again.
Does it make a difference?
Even though he didn't understand it at all, Fu Xingliang followed Bai Mo's instructions and slow-played the scene of the murderer passing by.
Bai Mo narrowed his eyes and muttered in a low voice, "There is no light in the underground parking lot. It is a pure night mode. Many colors will be covered up. There are windows in the elevator room and there was a moon last night. This night mode can reflect Come out with some color.”
"Pause!" Bai Mo said quietly.
The screen paused, showing the murderer appearing at the entrance to the elevator. Bai Mo took out a small sketchpad and pencil from his backpack, then stared at the screen and started sketching.
Chen Xiaoxiao stared at the picture for a while and asked with some uncertainty: "He seems to have raised his head slightly?"
"Yes!" Bai Mo kept staring at the picture, with no intention of stopping the pencil in his hand. "He raised his head because the brim of the hat blocked his sight. There is no interlayer inside this type of hat. From this action, it can be inferred that his eyes are The distance between his foreheads, so that the outline of his face can be determined.”
Fu Xingliang swallowed. Although he couldn't understand what Bai Mo was talking about, he could tell that Bai Mo seemed to be able to draw the outline of the murderer's face.
Not knowing how long it would take Bai Mo to draw, Fu Xingliang continued to check the surveillance on another computer screen.
Chen Xiaoxiao also kept looking at the surveillance camera. As the two of them watched, Fu Xingliang's hand operating the mouse suddenly stopped, and Chen Xiaoxiao's eyes gradually widened.
"Is it on the first floor?" Chen Xiaoxiao asked softly.
Fu Xingliang quickly retrieved the surveillance footage from the first floor, but still found nothing. Fu Xingliang sat up straight, and Chen Xiaoxiao also sat next to Fu Xingliang. They discovered something very strange. The murderer seemed not to be involved. Didn't leave the building.
Fu Mingming simply checked the surveillance footage on each floor at high speed. The surveillance cameras on the 21st and 14th floors were broken. On other floors, between 1:27 and 2 o'clock in the morning, only two people appeared in the surveillance. It was obvious that They are residents of the building.
"Fuck!" Fu Mingliang and Chen Xiaoxiao looked at each other, and he lowered his voice and asked Chen Xiaoxiao, "Isn't it possible that the murderer never left?"
