The air-conditioning vent in the No. 2 screening hall is 5.2 meters vertical from the ground, and Xu Zheng can only stand on the top of the ladder, biting a small flashlight with his mouth and working with both hands.

It's not good at all.

After a while, my face was sweating.

However, he was excited in his heart, because there was indeed a trace of dryness in the air outlet baffle.

After a long time, some soil will be deposited at the air outlet, and then it will be stained on it when it is blown by the cold wind of the air conditioner.

"Brother Qiang, hand me the camera quickly, there are really traces of the bottom of the bottle on it, haha. Wei Yi's guess was correct. Xu Zheng said excitedly below.

"Ha Okay, you come down first, I'll hand it to you." Zhuang Qiang raised the camera, took advantage of Xu Zheng's efforts, turned his head and gave Wei Yi a thumbs up with his right hand, "It's still you, a stuffy gourd cow, you don't make a sound on weekdays, and your voice is amazing!" ”

Wei Yi smiled embarrassedly, he didn't have the thick skin of Zhuang Qiang and Peng Yue, "It's all the credit of everyone's discussion, if Xu Zheng hadn't put forward his conjecture, if it hadn't been for everyone's discussion, I wouldn't have thought of it." ”

Zhang Yuqi looked at his subordinates with satisfaction and saw that they were so united, Wei Yi and Ji Meiyue were both from a large team, and they did not speak actively in normal times, but as long as there was a real hammer at the exit, "That's why we have to study and judge often, give full play to the strength of the collective, and handle cases is never a matter of one person." ”

Although he said this, Zhang Yuqi sighed in his heart, ordinary cases can definitely be solved step by step, but some tricky cases need people like Xu Zheng to take everyone out of the bottleneck of case handling.

Otherwise, why would he be called a little detective, this is his positive performance in every case, and he is recognized by everyone.

Xu Zheng took the camera here and took a few photos as evidence, and the next step was to take samples.

This sampling is as simple as taking a cotton swab in water, dipping the contents of the traces on the cotton swab, and then putting the cotton swab into the evidence bag.

The rest is, of course, to clean all this place, because this is a toxin after all, although experts say that a single toxin is less toxic, but since you see it, you have to clean it up.

After working for a long time, Xu Zheng was still not satisfied, although the air outlet in front of the left was not big, there was a lot of dust stuck in it, "Team Zhang, I suggest that I tell the theater that this air outlet should be cleaned up." ”

Zhang Yuqi saw Xu Zhengre sweating profusely, and the light blue short sleeves were also wet with sweat, "Well, you come down and drink saliva first, this iron plate doesn't need to be installed first." ”

Don't install?

Xu Zheng understood what Zhang Yuqi meant, today the second team all went out to the cinema, and also brought a ladder, and now this baffle is not installed, as long as the murderer knows this, he will understand that the police have discovered what he did.

To tell the truth, if it was a suspect in another case, the police would not startle the snake, but the suspect in Su Guangquan's case, the police were not afraid that the suspect would run away, and if he ran away, the second team only needed to solve the case and determine the suspect.

As for whether the suspect can be brought to justice if he runs abroad, this is not the task of the second brigade, the Ministry of Public Security can directly issue a wanted warrant, or activate the extradition regulations.

On the way back, Zhang Yuqi called Wan Haihong about what she had just discovered, and so far there have been some clear clues in this case, even if the traces of the air conditioning outlet have not been examined, but she is also eighty percent sure that this is the traces left by the murderer.

Who else will put this thing at the air outlet in Hall 2 besides the murderer, and although this trace is a bit dry, it will not take more than ten days to see the color, and according to the theater's manager Chu, the air outlet has not been dealt with for two years.

Wan Haihong praised the second team on the phone, and then asked Zhang Yuqi to send him the photos of the evidence he had just collected, "Just now there was a call from the provincial department, asking us to cooperate with Huaxian Media Company to release a new case report."

Nie Ju temporarily perfunctory the past on the grounds of insufficient evidence.

Now that we have new clues, we can finally deal with the government and the provincial authorities. ”

Wan Haihong did not mention Hualian Media on the phone, which shows that he doesn't care about this large company with a market value of tens of billions, maybe he, like all the members of the second team, can't get used to seeing these capitals want to slander Zhao Jinmai's reputation for the sake of the movie box office.

Now with this clue, it can be proved that the possibility that Zhao Jinmai is the murderer is very small, otherwise it would be impossible for her to climb to the air conditioning outlet after she was poisoned, right?

As for saying that she is the mastermind, then it is really impossible for her, to buy this 9-hydroxydopamine neurotoxin is 500,000 US dollars according to the price of the international black market, plus the minimum cost of hiring a killer is 500,000 yuan.

Coupled with other miscellaneous money, even if she spends three million to kill her work assistant, does she have a brain pump?

This is just the motive, and now that there is evidence of the air conditioning outlet, it can be completely proved that she does not have the ability and time to do it directly.

Ji Meiyue patted Xu Zheng's car seat with a smile, "Xiaozheng, now that there is evidence, the suspicion of that big star has been reduced by one point, do you want to take some time to visit?" ”

"Sister Mitsuki, this joke is not funny at all." While driving, Xu Zheng asked Zhang Yuqi: "Team Zhang, is there any news from the Tu Detective Qi Detachment?" ”

"Not yet, I guess it's the kind of conjecture you put forward that is not easy to find, right?" Zhang Yuqi flipped through her phone, thought about it, and still called Qi Haibing, "Hey, Qi detachment, have you found out?" ”

Qi Haibing on the other end of the phone scratched his head, and he didn't know how to answer Zhang Yuqi's question, because the computer screen in front of him had been slowed down 100 times, and then the video image was magnified, as if something had been shot into the plastic cup containing the milkshake.

It's just that although the current high-definition camera can achieve 2560000 frames per second, it is 1024 times according to the slow play of 25 frames, that is, the original 1 second of the image took 1024 seconds to play, that is to say, the slowest can be slowed down a thousand times.

But obviously the equipment of the provincial department is still not powerful enough, on the computer screen, slow down a hundred times and magnify the resolution, the video screen is a little blurry, and that thing is very fast, small in size, it is difficult to determine at all.

Therefore, Qi Haibing didn't dare to be sure, so he had to reply to Zhang Yuqi: "Team Zhang, in this way, when you return to the city bureau, you come over in person, the video screen is a little blurry, and it is not easy to deal with, and I am not sure if there is something." ”

Zhang Yuqi hung up the phone and told Xu Zheng what Qi Haibing said, "It seems that the murderer's poisoning method should be high-tech." ”

In recent years, with the development of 6G networks, there have been more and more cases of various high-tech remote controls, and some capable people have remotely shot and killed targets by transforming drones, and they have truly achieved the goal of taking people thousands of miles away.

And this kind of high-tech is very difficult to check, let's just say that this drone is now sold in China every year to reach one million units, most of which are used to spray pesticides on crops except for young enthusiasts.

This kind of drone sold out is not like a car with a license plate, it is small in size, fast, more concealed, if the drone is aimed at the target in the dark to launch a tiny poison, and then directly evacuate, this modus operandi completely avoids the Sky Eye system all over the city.

Although Xu Zheng is a young man, he has not studied much of these high-tech, such as drones, which he only learned to operate when he was in the police station, and some miniature electric shockers used by criminals, like a small flashlight, but they can corona people all at once.

What impressed him the most was that there was an online homicide case in Nanhai Province, the murderer was able to kill the victim in the process of online chatting, and the means was that the murderer played music that made people feel depressed and sad in the process of online chatting, and the murderer shared a lot of videos and articles with very negative energy to the victim.

As for the kind of suicide website mentioned on the Internet, Xu Zheng has been a police officer for so many years, and he has not heard of such a case in China.

Everyone returned to the detachment, Zhang Yuqi took Xu Zheng and Lang Shaobai to the graphic investigation detachment, and the remaining team members inquired about the video of the Wanda Cinema in Yiqiao District, starting from the first 15 surveillance videos on the day of the crime, and all those who wore backpacks or sneaked into Hall 2 must be carefully screened.

On the way back just now, Lang Shaobai and the others analyzed how the murderer used to put the venom into the air conditioning outlet, and discussed for a long time, but they didn't think of the method, because they all thought that the murderer could not use a ladder, and the ladder was too conspicuous.

Even if the movie theater closes at 3 o'clock in the morning, but at this time, the murderer carried a ladder into Hall 2, can this camera shoot it?

Xu Zhenglu also pondered what method the murderer used, but he was also confused, this doesn't use a ladder, could it be that the murderer is Spider-Man?

When they arrived at the graphic reconnaissance detachment, everyone was polite, Qi Haibing pointed to the screen where the computer was paused and said: "Team Zhang, you see, this is the result of magnifying the video 50 times, the picture is a little blurry, but you can see that something is indeed stuck on the milkshake cup." ”

Zhang Yuqi only needs to make sure that there is something, as for what it looks like, she doesn't care very much, she is more concerned about how the murderer operates.

Regarding this question, Qi Haibing and several of his detectives were interested, pointing to a picture of Su Guangquan munching on ice cream and standing in front of the guardrail and analyzed: "We demonstrated it just now, according to the ballistic analysis of the thing on the screen, it should be from a woman on Su Guangquan's left side, three meters away from him." ”

As a graphic detective operated the computer, soon a fashionably dressed girl appeared on the screen, why say girl, because this girl wore a ponytail, wore a black mask, and carried a pink backpack behind her.

Dressed in a light blue princess dress, this is a young girl no matter how you look at it.

Moreover, in the picture, the girl is playing with her mobile phone three meters away, and it is not clear what model of the mobile phone is, but the mobile phone case should be in the shape of a rabbit and pink.

(End of chapter)