Serious Crime Unit 1

Chapter 887 Deadly Poison (8)
"Really? That's great." His girlfriend said excitedly, and then reported her and He Wenli's mobile phone numbers to Jiang Yiming, who saved the numbers in his address book.

"Captain Jiang, we have never seen anyone who can fly. Do you know why he can fly?"

"Actually, there is nothing surprising. This person is using a flight backpack. On May 2011, 5, New Zealand Martin Aircraft Company began to test the performance of the flight backpack. A simulated pilot boarded the aircraft and climbed to 21 meters at a speed of 243.8 meters per minute. Meter height, it continued flying for 1500 minutes and 9 seconds, with a flight speed of 45 kilometers per hour, and finally successfully implemented an emergency landing. Martin Company began to put the flight backpack on the market in 101.4. It is favored by flying enthusiasts."

Zhou Ting continued: "From the perspective of flight design principles, the Martin jetpack is more like a hovercraft than a jet. A gasoline-powered motorcycle engine drives two fan-shaped propellers through a car fan belt. The propellers look like oversized soup on both sides. The tank rotates horizontally within the device. This ducted fan design is more efficient than the helicopter's unshielded engine. The engine, fuel tank and pilot are in the middle and below the lift fan to lower the center of gravity and prevent the jetpack from turning upside down and crashing during flight. Towards the ground.”

"I didn't expect it to be used to kill people. Alas, it's a pity that we didn't clearly capture this person's face. Otherwise, it would definitely provide clues for you to solve the case." He Wenli still felt regretful.

"It doesn't matter, we can identify the suspect from the video you provided, thank you! You continue to fall in love, we have to return to the team and work overtime." Jiang Yiming shook hands with them and said goodbye.

Sitting in the car returning to the team, Zhou Ting said: "Captain Jiang, this jet backpack has not yet entered the Chinese market because it is still dangerous, but it has been put into the European and American markets. I have read the news, and its unit price is 20 US dollars, nearly 140 million yuan, which shows that the murderer or mastermind is a very wealthy person."

"This allows us to narrow down the target of the suspect a lot. Just like the nano-scale radium tube implanted in Xu Yi's brain, it is very likely that it was purchased from overseas and returned to China."

"Not only that, the person operating it must undergo repeated training before he can fly. It is best to be someone with flying experience, such as someone who can parachute in the air or control a paraglider. Otherwise, if the operation is wrong, someone may die. Unless the murderer takes his life."

"We can go to the flying club to investigate. The suspect may participate in flying club training."

"If the suspect has flying experience, it will be difficult for us to find him. The best way is to look for it from the surveillance videos of the three gates of Baiyun Park. I think the suspect entered through the gate in all likelihood. .”

"I agree with you. It is impossible for the suspect to fly to Shenxian Mountain from elsewhere, and then fly to the balcony of Room 2418 to commit the crime, because flying at night is very dangerous, and the longer the flight distance, the greater the risk. And there are more people Risk of witnessing.”

"Now that the big fish has been discovered by us, we just need to cast the net out and it is only a matter of time before we catch it."

Jiang Yiming nodded, then took out his mobile phone to call Wen Xiaorou's mobile phone, told her the situation, and asked her and Lu Yingying to lead the investigation team to focus on the surveillance videos of the three gates of Baiyun Park.If the suspect can be found from the surveillance video, that would be the best result.

Wen Xiaorou said that it would take time to check so many surveillance videos. What she was most worried about was that the suspect climbed in from a wall somewhere in Baiyun Park, which would take even more time. Of course, various monitors were installed around Baiyun Park. It was only a matter of time before the suspect was found.

Jiang Yiming fell into deep thought: How can we arrest the murderer as quickly as possible?

6
"Team Jiang, we found a suspicious person in the surveillance video at the west gate of Baiyun Park." Wen Xiaorou walked into Jiang Yiming's office, holding a slim Lenovo laptop in her hand, and walked to his desk. Sit down opposite.

"Oh, great. Turn on the surveillance video and let me see it."

She turned on the computer, clicked on the video on the desktop, and after starting to play, she turned the screen to Jiang Yiming, then stood up, walked behind him, pointed at the screen and said, "Look, this is the person."

The video shows: At 2019:5:11 on May 20, 30, a tall man wearing tight sportswear appeared in the picture. He was carrying a large black backpack and a peaked cap. He bought a ticket at the entrance of the park, and then , looked around for a few seconds, then walked quickly into the park and walked toward the east of Shenxian Mountain.

"This person is very suspicious. People who go to the park usually don't carry such a big backpack. If I guess correctly, the backpack must be a jetpack. Are we sure we can catch him?" Jiang Yiming asked.

"Of course there is, it's just a matter of time. The monitor at the west gate of Baiyun Park is high-definition and is installed relatively low. It is mainly used to take pictures of tourists. Therefore, the suspect's appearance is relatively clear and does not need to be processed by clear software. Take a screenshot of the suspect's appearance, print out his profile picture with a printer, and post a reward notice online to mobilize the public to participate. This is the best way."

"There are staff and family members living in Baiyun Park. Are the people we see living there?" "Definitely not. The staff living there do not need to buy tickets." Wen Xiaorou said affirmatively.

"Have you checked the surveillance videos at the south and north gates of the park?"

"We worked in groups to check the surveillance videos of the three gates, but no suspicious people were found. I checked on Baidu and found that there are many kinds of flight backpacks. The smallest one is 80 cm long, 60 cm wide and 40 cm thick. [-] centimeters. Except for the suspect we saw, we didn’t find anyone carrying such a big bag into the park.”

"The cunning fox has finally shown its tail. You can post a reward notice online. The reward can be a little higher than before. Anyone who finds valuable clues can be given a reward of 3 to 5 yuan, because the murderer must be very rich. People." The amount of the reward in the reward notice is usually determined by Jiang Yiming.

"The most regrettable thing is that He Wenli did not take a clear picture of the suspect's face, otherwise..."

"How can anything be so perfect? ​​It's very precious that the young couple He Wenli can provide me with the video. At least we saw that the suspect was wearing tight sportswear, which is the same as the suspect in the Ximen surveillance video. .”

Wen Xiaorou nodded and walked out of the office.

Jiang Yiming and Zhou Ting took their investigation tools and came to the Fairy Mountain in Baiyun Park. They called He Wenli and asked him to help because he saw where the suspect probably took off from.He Wenli said that he was at work and didn't know if he could get leave.Jiang Yiming thought for a while and said: If you can't ask for leave, just come back after get off work.

Because last night, He Wenli had pointed out that the suspect took off in the woods to the north, about 30 meters away from him and his girlfriend.As long as you have the patience to search within that area, you should be able to find traces.

Shenxian Mountain is in the shape of a strip, and the top of the mountain is also in the shape of a strip, with uneven heights and winding from south to north. He Wenli and his girlfriend were sitting on the west hillside at that time. The hillside is relatively flat and full of pine trees. The pine trees are relatively flat. The forest is dense, with leaves and some weeds growing in it. People will leave footprints when they step on it.This brings convenience to their investigation. The most important thing is that since the incident, it has not rained and the footprints will not be washed away.

Jiang Yiming and Zhou Ting put on their shoe covers and gloves and looked for suspicious footprints in the pine forest on the west hillside. Because it was early summer, the weather was relatively hot, and the leaves on the ground were rotting, giving off a faint smell. Therefore, few people come to play in the pine forest.

They searched for about half an hour and found a string of fresh footprints in an open area. Jiang Yiming squatted down to observe and said to Zhou Ting: "These shoe prints should be left by the suspect. The shoe prints are size 43. Look at the shoes." The pattern is very similar to the 2018 winter Nike shoes.”

"Yes, the suspect in He Wenli's video was wearing Nike sneakers, and they were white."

"Judging from the depth of the shoe prints sinking into the soil, the suspect weighs at least 80 kilograms."

"The suspect was carrying a jetpack. We don't know how much the jetpack weighs, so it's still difficult to judge."

Jiang Yiming nodded, took a photo of the shoe prints and saved them, then continued to search for traces nearby, and found many shoe prints of different shades, all left by the same pair of shoes. Of course, there were other footprints next to these shoe prints, but they were no longer there. Fresh, so no need to think about it.

Why do shoe prints have different shades?This is because the shoe prints left by the suspect when he was carrying and putting down the jet backpack will naturally be darker when he is carrying the backpack, and lighter when he is carrying the backpack.

The suspect entered Baiyun Park at 11:20:30 on the 30th and started committing the crime at 11:23 on the 15th. During this period, he must have been waiting for Yang Yang to go to the balcony of Room 2418. During the waiting period, the suspect may have smoked or even sweated. , after all, the temperature that night reached 32 degrees.

Zhou Ting centered on the place with the densest footprints and looked outwards in a ripple shape. He soon found a cigarette butt 3 meters outside the center. It was the cigarette butt of a Chinese cigarette. Why was the cigarette butt 3 meters outside the center? Where is it?He thought the suspect must have thrown it away casually.

If the cigarette butt was thrown by the suspect, then the suspect's biological sample can be extracted from it, and then DNA can be made. This will give the murderer a fatal blow, because DNA is ironclad evidence and no one can overturn it. In addition, the shoes on the ground Seal, a chain of evidence has been formed.Zhou Ting picked up the cigarette butt with pliers and put it into the evidence bag.

(End of this chapter)