Profiler 2: Criminal Investigation Brigade

"envy."

Lu Yuanli said: "I read Professor Fan's testimony, and based on what he said, there may be more than one man who has an affair with the heroine. Then, there will be an issue of jealousy between them. However, in addition to what we have considered before, there is another possibility of jealousy between the deceased woman's husband and lover. Considering the age of the deceased woman, the men who had emotional entanglements with her are most likely from the married family. Then , the other party's wife, because she holds a grudge, or wants to keep her marriage, has a motive to kill."

Hearing this, Jiao Yang couldn't help but startled, "You mean, it can't be ruled out, the murderer might be a woman?"

"It's like this at the moment." Lu Yuanli said: "For this delicate method of killing, he doesn't really need much physical strength, but he has high requirements for caution, strength control, and timing arrangements. In this way It seems that women actually have more advantages than men.”

On the other side of the physical evidence, a detailed report on the forensic results was quickly submitted.The autopsy showed that the two deceased were indeed poisoned by inhalation of carbon monoxide, and the concentration of carbon monoxide in their blood was dozens of times higher than the normal level.The original white balloons found at the scene for containing toxic gases, although imported from Thailand for laboratory use, are made of ordinary rubber and are also a common model in China, and there are a large number of them.The point is that fingerprints and other substances that could prove the identity of the murderer were not found on the balloon.

It was confirmed that the hairs found on the car belonged to the two deceased and another man, that is, the white hair they found at that time did not belong to Professor Fan.

This made the case more complicated and confusing, and there was another round of discussions in the office.Jiao Yang took the inspection report and some balloon fragments to Shencheng Ocean University where Professor Fan worked.

A teacher from the school's administration department accompanied Jiao Yang and the others to the chemistry laboratory, found Professor Kang, the deputy dean in charge of departmental administration, and asked him to identify the balloon fragments.

Professor Kang took a closer look and said that his school did use this kind of balloons for experiments.However, the price of this kind of balloon is relatively low, a pack of tens of dollars, 100, is equivalent to a few cents.Larger balloons are slightly more expensive, usually a few dollars at most.When students do experiments, it is likely that each person will receive a pack and a half pack, and then several groups of students will be divided, and there is no number on it.As for where this balloon belongs and whether it belongs to their school, I can't tell.

Jiao Yang suddenly thought of the information provided by the school leaders when he first came.Jiao Yang asked, "Professor Kang, is there another Professor He in our school's Department of Chemistry?"

"What do you mean, old man?"

Professor Kang said: "Yes. Captain Jiao, if you don't tell me, I can't even remember it. Old He and Professor Fan have a really good relationship."

Jiao Yang said: "I wonder if Professor He is here today? Can we meet him?"

Professor Kang checked the schedule and said: "Old He has a class today, and he is here. The get out of class will be over soon, and I will accompany you there."

After Professor He Tang finished his get out of class, Professor Kang called him into the small conference room next to him. Across the long brown-red conference table, there were three young people sitting.The young man in the middle can tell from his sitting posture that he has received professional training. His demeanor is upright and tough, and his eyes are peaceful with a little scrutiny. It is obvious that he comes from some kind of compulsory agency of the state.

He Tang hesitated for a moment, and Professor Kang had already introduced: "This is Captain Jiao of the Criminal Investigation Brigade of the District Bureau, and his two colleagues, Xiaohou and Xiaoyu. Team Jiao, this is Professor He from our department. He just finished class and kept you waiting for a long time."

Although he has roughly seen it, but after Professor Kang clearly stated that they are policemen, and they are criminal policemen, He Tang has already put his hand on the back of the chair, hesitated for a moment, then opened the chair and sat down and said: Me, what's the matter?"

"Professor He, hello, please sit down."

Jiao Yang smiled and said hello, and then said: "I don't know if you have heard that something happened at Professor Fan's house. We also heard that you and Professor Fan usually have a good relationship. We happen to be in our school. I just want to ask you about the situation by the way, it's just a routine inquiry, so don't be nervous."

"Oh, I heard about the death of Lao Fan's wife."

He Tang sat down and said, "But, I don't know, what does it have to do with me?"

"Because the death of Professor Fan's wife was not accidental, but man-made." Jiao Yang said: "So we want to ask, have you noticed anything unusual about Professor Fan recently? Or is the mood wrong, or is there any , what did I tell you?"

"No." He Tang lit a cigarette, thought for a while, and said, "It wasn't an accident, what do you mean? Was killed?! You don't suspect Lao Fan, do you? No, I didn't find anything wrong with him. But as Lao Fan, he's not good at talking about personal affairs with others. But I don't think it's possible, the relationship between him and his wife is quite good."

Feeling good?Jiao Yang looked at him and said, "Then recently, has Professor Fan been to your laboratory and visited you?"

He Tang said: "Captain Jiao, I don't have my own independent personal laboratory, I just do experiments in school."

"Hmm." Are you deliberately emphasizing the problem of no laboratory?Jiao Yang said: "What I mean is, has Professor Fan visited you in the laboratory?"

He Tang paused and said, "It seems to have happened twice recently, but I can't remember the exact time."

"Okay." Jiao Yang said suddenly: "Do you think Professor Fan and his wife have a good relationship?"

He Tang said: "Yes, the whole school knows about their acquaintance, and it's quite romantic. Of course, in the future, the couple will inevitably have some bumps in their lives. Besides, sometimes lesbians have reached menopause and have a temper. It's normal to be moody, just tolerate each other and it will pass."

Menopause, women who have not yet reached the age of 40, how can they not reach menopause, right?Jiao Yang was keenly aware of the meaning in He Tang's words, followed up with a smile and asked, "Have you ever encountered their husband and wife quarreling?"

He Tang said: "Sometimes. Whose couple doesn't quarrel? Our family sometimes quarrels!"

Jiao Yang smiled and said, "Okay, thank you Professor He for providing us with the information."

Jiao Yang led Hou Xiyong and the others out, lowered his head and glanced at the photo wall in the corridor, and accidentally saw the photos taken when the two colleges went out for a spring outing together recently.Fan Yiwen put his arms around the waist of a woman in her thirties. The woman turned her head to look at him with a look of adoration and admiration. The two looked very intimate.

Jiao Yang paused, and said casually, "Is this female teacher also a good friend of Professor Fan?"

He Tang looked down inexplicably, and said with a smile: "Oh, you said Yang Qing. She is a teaching assistant in our chemistry department. She used to be a student of Lao Fan, and later Lao Fan helped her to stay in school as a teacher."

Jiao Yang rubbed his nose subconsciously, this "help" is also a magic stroke...

Jiao Yang smiled and said, "Professor He is bothering you today, so let's go back first."

However, as soon as He Tang entered the elevator, Jiao Yang turned his head and motioned for Yu Xiaoguang to go back to the small conference room and collect the cigarette butts He Tang had just smoked with an evidence bag.He took Hou Xiyong and went back to find Professor Kang.

As soon as Jiao Yang entered Professor Kang's office, he said, "Hi, I still have something to ask you."

Professor Kang was a little surprised, took off his glasses and said, "Captain Jiao, tell me."

Jiao Yang said: "Our school also has experiments related to dangerous reagents such as carbon monoxide, right? Professor He, is there any experiment in this area recently?"

Professor Kang nodded and said, "It's natural, chemistry-related majors are inevitable. Professor He also has a lot of experiments like this, what's wrong?"

Jiao Yang said: "I have graduated for several years, and now I don't know the process well. Then, does our school have any control measures for these dangerous goods?"

"Of course!" Professor Kang said: "Our school is TOP9, and the procedures are very strict! First, we must report to the school, submit an application, and then report to the department where we are. Mentors, classmates, assistants, and all experimental teams You must sign a contract. Of course, some majors will also go the other way, that is, from the department to the college to the department and then to the school. And, now all have video surveillance, take dangerous reagents and pupil identification, very strict. You a little Wait, I'll ask them to find the record for you."

Jiao Yang looked at the registration of dangerous reagents, and sure enough, He Tang had been doing chemical experiments such as carbon monoxide and chlorine gas under high temperature to obtain phosgene (COCL2).

Jiao Yang took photos of several pages of experiment registration about He Tang, and asked Professor Kang's assistant to make a copy and take it away.

Jiao Yang hurried back to the bureau, and personally delivered He Tang's cigarette butts that he had just put away as physical evidence.

"Sister Li!"

Jiao Yang smiled sweetly and said, "Hurry up, help us work overtime!"

"Team Jiao!"

Li Rusi said with a smile: "Today is unlucky, I'm about to go out on a date!"

Jiao Yang smiled and said, "It's an emergency, please help me, sister Rusi!"

Li Rusi smiled and said, "Then, will you make up my date?"

"I dare not!" Jiao Yang said with a smile, "I'm afraid Boss Zhu will blow my dog's head off!"

"Are you afraid of him?"

Li Rusi pursed his lips and smiled, "Aren't you number one in the physical test every year?"

"That doesn't work!" Jiao Yang said with a smile: "We are criminal investigators, who dares to offend technical investigators? Don't want to mess around?!"

"You are so boring! You are just like a little old man when you are young!"

Not funny at all!Li Rusi curled his lips and said, "Tell me, what's the matter!"

Jiao Yang took out the cigarette butt in the evidence bag, "Sister, help me test the DNA contained in this cigarette butt, and see if it is the same as the white hair that did not belong to the two deceased among the few hairs we found at the crime scene. Fa, is it the same person!"