Profiler 2: Criminal Investigation Brigade

"You don't bring a 'sister', what's the matter if you can't speak? You call me old! Really!"

Li Rusi got up to take the cigarette butt, and twisted his waist to do the test.

About three hours later, the test results came out. According to the comparison, more than 99.99% of them can be identified as the same person.

"That's great! Then I'll treat everyone to a late-night snack!"

When the result came out, it was almost 9:00 in the evening.But Jiao Yang urgently convened a meeting with the comrades who were still in the police station, "There are new discoveries, everyone come!"

Jiao Yang asked Hou Xiyong to put a few copies of the test report on the table and circulate them to everyone.

He introduced today's discovery: "Today, we went to see Fan Yiwen's friend and colleague He Tang. I found that although he kept saying that Fan Yiwen and his wife had a very good relationship, in fact, the truth was true. Refers. He kept hinting to me that their husband and wife have been arguing."

This aroused my suspicion, so I got his cigarette butt and compared it with the white hair found at the scene of the crime.The white hair that did not belong to Professor Fan proved to be He Tang's.Although the car was under the name of Professor Fan, it was usually driven by his wife, the deceased woman Xu Zhenzhen.Therefore, we have reason to suspect that there are many connections between He Tang and Xu Zhenzhen. "

"Team Jiao!"

Mo Ke said: "We also have some discoveries here. I checked repeatedly with Zhou Ying. After checking the driving route of the driving recorder, I found that within a week before the incident, the vehicle had visited a certain community on Huaishan Road twice. Just now It was also verified that He Tang lived in this community."

"very good!"

Jiao Yang paused and said: "Although we want to take He Tang as a new key investigation target. However, we can't relax the investigation of Fan Yiwen. Today, He Tang also hinted that I, Fan Yiwen and the female assistant teacher of the Department of Chemistry, Yang Qing has an ambiguous relationship. If this incident is true, it cannot be ruled out as the motive for committing the crime. Fan Yiwen is still very suspicious."

When Jiao Yang went back at night, he saw that a large table of dishes had been cooked at home.

He thought there were some guests, but it turned out that the old lady felt sorry for him and had been working overtime recently, so she specially cooked a few more dishes and said that she would make up for him.

Jiao Yang saw it, he couldn't eat it!He suddenly remembered that Lu Yuanli was picky, so he was going to pack it in a lunch box and bring it to the work unit to eat tomorrow.

Who knows, upon hearing this, Zhou Peiyan made him a chicken porridge and asked him to take it with him.

At noon the next day, Jiao Yang cooked food on the induction cooker, and purposely sat at the table with Lu Yuanli and Jessica.

Lu Yuanli couldn't help but looked up at him.

Jiao Yang silently put the two lunch boxes on the table.Jiao Yang's craftsmanship back then was still good, I don't know if it has improved now.Lu Yuanli hesitated for a moment, but said nothing more.

Jiao Yang scalded three small bowls with hot water, filled out the chicken porridge, placed them in front of Lu Yuanli and Jessica respectively, and took a table knife to slightly cut up the braised eggplant he brought.

Jessica took a sip of the porridge and exclaimed, "Wow, it's delicious!"

A bowl of porridge, put a spoonful of special soy sauce, a little minced ginger and green onions.At the first entrance, apart from the glutinous and slippery rice fragrance, there seems to be nothing special, plain and bland.Take another sip, and in the plain, there will be a little aftertaste in the aftertaste.Between the lips and teeth, there is a thick and mellow aroma of meat and meat oozing out, slowly infecting the mouth, the more you drink, the more you can't put it down.

"OK."

This kind of resin bowl is not big, so Lu Yuanli drank the porridge until he bottomed out, and said, "You didn't cook it, did you?"

"How can I have this level?!"

Jiao Yang smiled and said: "The queen mother's handwriting! Come on, you can try this braised eggplant again!"

Lu Yuanli had already eaten just now, so he picked up another chopstick and subconsciously looked at Jiao Yang, "Two kinds?"

Jiaojia’s braised eggplant is eaten with two flavors, sliced ​​in half, and deep-fried with egg liquid.Half of it is made into eggplant clips, stuffed with meat, deep-fried with batter, and then put into the pot together, add soy sauce, oyster sauce, vinegar and other seasonings and braise in brown sauce.

Lu Yuanli couldn't help curling his lips, "For you, I really don't mind the trouble!"

Jiao Yang smiled and said, "How is it? Is it okay?!"

Lu Yuanli nodded and said, "It's okay."

Plan to pass!Jiao Yang compared his heart under the table and said with a smile, "Then I'll bring it to you tomorrow!"

Lu Yuanli said: "It's too much trouble for the old lady, isn't it good?"

"It's okay!" Jiao Yang said with a smile: "Our family often cooks a table of dishes, and there are only three people who can't eat it!"

Early the next morning, Jiao Yang and the others invited He Tang to the bureau, and showed evidence such as the route in the driving recorder and said, "Professor He, can you tell me now, who are you and Professor Fan's wife Xu Zhenzhen?" What's the matter? Why did her BMW come to your house? "

"Here, you..."

He Tang excitedly said: "You suspect that I killed Xu Zhenzhen? How is this possible? What kind of evidence is this! I have known Lao Fan for many years, and the relationship has always been very good. What's so strange about visiting each other? !"

Jiao Yang smiled and said, "Are you visiting each other with Mrs. Fan? Professor He, we won't come to you without evidence. We asked Professor Fan first, and he said that he hasn't been to you for several months. home. Or, do you want to accuse him of lying?"

"no……"

He Tang said: "It's like this. My car broke down a few days ago, so I borrowed Lao Fan's car and drove it for two days."

"Oh, so that's the case." Jiao Yang smiled and said, "It seems that Professor Fan doesn't know about it either."

"This……"

He Tang was embarrassed, and said: "I admit, I have a good relationship with Xu Zhenzhen, sometimes I don't...not meet through Lao Fan. But I can't kill people because of it!"

Jiao Yang said: "Professor He, what you said just now means that there is an improper relationship between you and Xu Zhenzhen, the female deceased in this case, right?"

He Tang scratched the neckline, "Yes, we...we had sex before, but she was the one who seduced me first! She said that Lao Fan is not very good at it...but I have a family, Impossible to be good, just kill someone for this!"

"yeah!"

As soon as Jiao Yang came out of the interrogation room, he snapped his fingers and said to Yu Xiaoguang, "Has He Tang's arrest been approved? There is also a search warrant for his home!"

Yu Xiaoguang said: "Captain Jiao, it hasn't been approved yet..."

Jiao Yang frowned and said, "Why are you so slow?"

Yu Xiaoguang scratched his head and said, "After all, he is a key university in China, double first-class, and the couple are both university professors, so they are somewhat influential, so... also consider social influence."

Jiao Yang said helplessly: "Okay, okay, approve slowly! Let's go, let's check the school monitoring again."

Previously, the videos of chemical experiments related to the collection and use of carbon monoxide that they confiscated at the school have all been taken back, and they will be checked one by one.

Moko and the others had already looked at it, but found nothing.

一个成年人的一氧化碳致死浓度，大概在单位面积5000PPM左右。即：3200ppm5-10分钟内头痛、眼花、恶心，25-30分钟内死亡，6400ppm1-2分钟内头痛、眼花、恶心，10-15分钟死亡；12800ppm1-3分钟内死亡。按照两名死者的死亡时间测算，当时车内的浓度在6400ppm上下。一辆汽车的内空间，约在3立方米。想要达到这个浓度，约需要24g的高纯度一氧化碳。

Considering that the balloon will slowly exhaust, slowly leak and other reasons, the carbon monoxide that can kill two adults must be at least 30g or more.Even if it is a compressed gas, the compression rate is different due to different pressures, and the volume should be between 600-1000 milliliters, which is enough to have the volume of a large balloon.The space it occupies is not small, and it is not like other poisons, just put it in your pocket and take it home.He Tang did not perform similar actions in the video related to the experiment.

Jiao Yang took Hou Xiyong to Ocean University again and asked when the video was saved.

Professor Kang said: "Our relevant experimental videos can only be saved for about a month. If it takes longer, the videos will be replaced."

This means that it is possible that He Tang used carbon monoxide, but the video has been replaced.

However, taking away dozens of grams of carbon monoxide gas that can fill a large balloon seems to be a very difficult task depending on the strictness of their school's procedures.Unless it is carried away in batches, little by little, but that involves accumulation and preservation issues.

Jiao Yang subconsciously asked, "Besides the school, are there other channels to get these things?"

"You mean high levels of carbon monoxide?"

Professor Kang paused and said, "Although it's a pity, I still have to say, yes. Many dangerous drugs can be bought on the black market."

Jiao Yang was taken aback, "Is there a black market for these things?!"

Professor Kang smiled wryly and said, "Captain Jiao, you should know this better than me, right? We have a professor who occasionally heard students complaining that it was too troublesome to get these experimental supplies, so we might as well buy them from outside. We specially I found out that there is not only an underground black market, but also many online stores.”

Oh My God!Jiao Yang's eyes darkened. Although they knew this situation existed, they didn't think about black market channels before.If it is easy to obtain it privately, then the range of suspects is likely to be greatly expanded.

Jiao Yang returned to the police force with heavy steps. He thought for a while, then called the Municipal Bureau, "Jiaodu?"

Jiao Yang's cousin, Jiao Du from the Technical Division of the Criminal Investigation Corps of the City Bureau, said with a smile, "What's wrong, boss? What advice do you have?"

Jiao Yang rubbed his face and said: "I remember, you mentioned a case to me before, saying that you sold fake medicines online, pretending to be methamphetamine, ecstasy pills. These things, apart from fake ones, are also sold Is it real?"

Jiao Du said: "Of course there are. There are a lot of fake ones selling this kind of thing on the Internet!"

Jiao Yang said: "Can you help me find out, the black market channels for the underground trading of illegal drugs in this city? Both online and offline, I need to use them in recent cases!"

The author has something to say: The scumbag author is a liberal arts student. I checked the unit concentration, mass, and volume conversion data and found coma. Let’s just read it, ahem... In addition, dear friends, please pay attention, the person who brought us the opportunity has already shined debut!