The inquiry continued, Chen Yi was delayed by Qian Changdong for much longer than Zhao Jianhui, and the couple was one of the most intimate relationships, and they would know the privacy that others did not know.

These private friends and relatives may not know about it.

Last year, the Suicheng police had dug a lot on Qian Changdong, and Chen Yi wanted to try to dig again, especially Gao Xiaofei's early experience.

This direction is the weak point of the investigation, and the Suicheng police focused most of their energy on Gao Xiaofei's situation in recent years, and did not investigate Gao Xiaofei's past in depth.

If all the four suspects currently in our possession are eliminated, then the foreseeable new direction will inevitably be to look forward, starting from childhood.

Chen Yi needs to prepare in advance, there is a possibility that the murderer is outside the suspects currently in his possession.

The police can't open God's perspective, what they can do is to cover as comprehensively as possible and find the only breakthrough.

"When she was in junior high school, she was quite rebellious." Qian Changdong said.

Chen Yi: "What kind of rebellion law?" ”

This information is in the file, but it was not learned through Qian Changdong, but through Gao Xiaofei's cousin.

Qian Changdong: "That's it...... Smoking, drinking, fighting, and never returning home at night, her academic performance was very poor at that time, she was the bottom of the class, and then there was a fire in the house, she grew up overnight, and then she began to study hard, and was later admitted to Suicheng University. ”

Suicheng University is a second-class school, and it is not bad to be admitted to the second school from a problem girl.

Dongzhou is a large province for the college entrance examination is highly competitive, and the difficulty of entering the key points is very great.

Chen Yi thought for a moment and asked, "Did those friends of hers at that time still keep in touch later?" ”

Qian Changdong: "It should be that there is no contact, I haven't heard her say it, I feel that her interpersonal relationship is quite simple, that is, college classmates and relatives." ”

Chen Yi: "How did you talk about her cousin Shi Yiqing?" ”

The Suicheng police listed Gao Xiaofei's cousin Shi Yiqing as one of the suspects at that time, which was the primary information they got from Qian Changdong's mouth, and then went to visit Gao Xiaofei's other relatives and determined that the two had conflicts and often quarreled.

The contradiction between the two lies in Gao Xiaofei's father, who is Shi Yiqing's uncle.

When Gao Xiaofei was in junior high school, because of her rebellious behavior, the relationship between father and daughter was very poor, and Shi Yiqing and Gao Xiaofei's father had a good relationship, and over time, Shi Yiqing became more and more disdainful of Gao Xiaofei.

For normal people, Gao Xiaofei is an outlier, her relatives don't like her very much, no one says anything on her face, only Shi Yiqing dares to point her nose and scold.

After the fire, the only family bond between Shi Yiqing and Gao Xiaofei was the old man in the family: Shi Yiqing's grandmother and Gao Xiaofei's grandmother.

After investigation, Shi Yiqing admitted that she hated Gao Xiaofei very much, even if Gao Xiaofei studied well and was admitted to university, nothing changed.

The prodigal son turned back at the cost of the death of his family, which is not worthy of forgiveness at all in Shi Yiqing's opinion, and she even said that the person who died in the fire should be Gao Xiaofei, God is blind.

Dramatically, Shi Yiqing also studied at Suicheng University, one level lower than Gao Xiaofei, and there was a lot of conflict when they met, so the Suicheng police listed Shi Yiqing as one of the suspects.

To be honest, the motives are the same as Gao Xiaofei's roommates, which are more far-fetched.

There is no way to do this, there is really no way to find people with reasonable motives.

Qian Changdong replied: "Once Xiaofei was in a bad mood, I asked her what was wrong, and she said that she had another quarrel with her cousin, and everyone was in the same school, and they would still meet occasionally." ”

The conversation between the two lasted for more than an hour, during which Chen Yi had been observing the details of Qian Changdong's expression, and chatted a lot around Gao Xiaofei, including what the Suicheng police had already learned about last year, repeated it again, and got a completely consistent answer.

It is almost certain that the other party did not lie.

The two are ordinary college lovers, there is no contradiction, and there is no dispute over interests, although Qian Changdong has relatively sufficient conditions for committing the crime, but he does not have any motive for committing the crime.

After Qian Changdong left, Chen Yi asked Qin Fei to call Shi Yiqing and learned that the other party was in the library, so he immediately went and met Shi Yiqing who was studying.

The library was not convenient to chat, so a few people found a nearby bubble tea shop on campus, and there was a table outside the door.

Shi Yiqing is preparing for the graduate school entrance examination, and it seems that she is a self-motivated girl who loves to learn.

"I've said it many times, I'm not sad at all when she died, and I'm even a little happy, but I didn't kill her, and I'm not that bold."

Shi Yiqing drank milk tea, and without waiting for a question, she was the first to speak.

Last year, the police conducted a long investigation and evidence collection on her, which still had a great impact on a college student.

Chen Yi leaned back in his chair, looked at Shi Yiqing and said, "We want to believe that you didn't do it, after a year, I wonder if there is any new information to provide?" ”

Shi Yiqing shook her head: "No, everything I know has already been said, not to mention that I have a very poor relationship with her, and I don't know much." ”

Chen Yi: "What is the relationship between her grandmother and her?" ”

Shi Yiqing was stunned for a moment: "Huh? ”

When the police investigated last year, they did not ask about their grandmother.

Chen Yi: "Gao Xiaofei was a problem girl when she was a child, and her relatives had a bad impression of her, I think this should include her grandmother, right?" After the fire, everyone in the family died, leaving only Gao Xiaofei, and the most painful must be her grandmother. ”

Shi Yiqing was silent for a moment, then hesitated: "You...... You don't suspect it's my grandma, do you? Absolutely impossible, Gao Xiaofei is her only relative. ”

Chen Yi: "You think too much, I didn't doubt her, just chatting." ”

"Oh......" Shi Yiqing's expression eased slightly, "How can I say it, the relationship between my grandma and Gao Xiaofei is like that, when my uncle and cousin were not dead, Gao Xiaofei received very little attention, after the fire, Gao Xiaofei was the only comfort for grandma, and it was very difficult for her for so many years." ”

Chen Yi: "To be specific, for example, is there any beating and scolding behavior towards Gao Xiaofei?" ”

Shi Yiqing: "It shouldn't be, anyway, I haven't seen it, grandma has been a little depressed over the years, and we often go back to see her." ”

Chen Yi: "How often?" ”

Shi Yiqing: "Once a month or so." ”

Chen Yi: "Every time you go back, what is your grandmother's attitude towards Gao Xiaofei?" ”

Shi Yiqing thought for a while and said: "Very indifferent, since the fire, she has been very indifferent to everyone, and she is like that to me, in fact, I am also a little glad that Gao Xiaofei is still alive, otherwise grandma will probably not be able to think about it." ”

Chen Yi nodded slightly, if the whole family died, no old man would be able to stand it.

"You just said that Gao Xiaofei received very little attention when she was a child, do you mean that your uncle and aunt are not good to Gao Xiaofei?" He asked.

Shi Yiqing: "Not really, after Gao Xiaofei went to junior high school, she mixed with the junior students in the class, and her uncle and aunt must be very disappointed, but after all, she is her own daughter, and she hates iron and steel." ”

Chen Yi: "Have you ever done it?" ”

Shi Yiqing: "I heard that it was moved, Gao Xiaofei dared not return at night, her uncle beat her, but it was useless, she still went her own way, and once made her uncle angry and almost hospitalized." ”

Speaking of this, Shi Yiqing opened the conversation: "After the fire, Gao Xiaofei grew up overnight, became honest, and loved to learn, but what is the use? Uncle They are dead, even if she is admitted to God City University, her uncle will not be able to see it. ”

Chen Yi silently listened to Shi Yiqing's "complaints", the first time they met, Shi Yiqing gave him the feeling that she was a very straightforward girl, what to say, at least he didn't find any flaws.

After that, he chatted with the other party about going to Gao Xiaofei's house to visit his grandmother the day before the crime, and asked in detail, from entering the door to leaving, what he did, what he said, whether he entered and left Gao Xiaofei's room, etc.

These problems need to be implemented again with Gao Xiaofei's grandmother.

The Suicheng police have already investigated, but it must be different from a year ago and now, if there was a lie at that time, then there is still a great possibility that the lie will be flawed a year later.

Real memories are always true, while false memories can become distorted over time.

After the three people's questioning, Chen Yi and the others left Suicheng University and drove to Lin Kaiyue's home.

This is the last one.

Lin Kaiyue has just graduated and has not yet found a job, and is currently unemployed at home.

In the face of the police coming to the door, Lin Kaiyue's parents were very resistant, but there was no way, who let their daughter have a conflict with the murder victim, and the police investigation will not end until the murderer is caught.

The two asked to accompany their daughter to the questioning, and Chen Yi agreed.

In the living room, out of politeness, Lin Kaiyue's mother brought tea, Chen Yi thanked him, and began to understand Lin Kaiyue.

In fact, there are all questions that should be asked, and the reason why the suspect is revisited is mainly to understand more intuitively, and to find the suspicion through the change of expression.

Most importantly, find out if there are any inconsistencies in the confession.

Different police officers must get different results when facing the same interviewee, especially those who understand psychology and micro-expression analysis.

Lin Kaiyue was obviously a little bored, but after learning that the other party was from the provincial department, she immediately became a lot more honest and answered whatever she asked.

Like Shi Yiqing, Lin Kaiyue did not shy away from hating Gao Xiaofei, and under the guidance of Chen Yi, she said many of Gao Xiaofei's shortcomings.

For example, irritability.

For example, I like to preach and pretend to be mature.

For example, violent maniacs.

Violent maniac is a bit exaggerated, Gao Xiaofei has never beaten anyone, but her junior high school experience has made her retain her cynicism.

So the other people in the dormitory are somewhat afraid of Gao Xiaofei, and Lin Kaiyue is not a fuel-efficient lamp, she has had many conflicts with Gao Xiaofei in the past three or four years, and even got into trouble with the counselor, and almost changed the dormitory.

Although the dormitory was not changed in the end, the smell of gunpowder between the two did not weaken, and there was no good face when they met.

Among the four, Lin Kaiyue's motive for committing the crime was relatively reasonable, but the investigators did not find any suspicions and clues on Lin Kaiyue.

Trivalent arsenic cannot be conjured out of thin air, which is a big problem.

An hour later, several people left the complex.

At the gate of the community, Chen Yi lit a cigarette and asked Zhuge Cong what they thought.

All four suspects have already met.

The first to speak was Zhuge Cong: "I really don't feel that there is any problem, it's been a year, and the details and files of some things are correct, I personally think they haven't lied." ”

Chen Yi looked at the others.

Qin Fei: "I also think they didn't lie, maybe the murderer is not among these four people?" ”

Chen Yi spit out a puff of smoke: "Don't make a conclusion easily, we just met and we have to continue to investigate, we have to believe in Zheng Congliang's ability to investigate the case, there must be very reasonable motives and conditions for deliberately poisoning, and the suspicion of these four people is indeed the greatest." ”

"But there is another problem that we can't ignore, to be precise, one person, that is, the victim's grandmother."

Hearing this, Zhuge Cong spoke: "Does Team Chen suspect the victim's grandmother?" ”

When Shi Yiqing was questioned just now, he was thinking about this question, from the perspective of the conditions of the crime, the victim's grandmother is also suspicious, but it doesn't make sense ethically.

That's the only relative.

The rest of the people also looked at Chen Yi, suspecting that everything was the basic quality of the criminal police, no matter what the relationship between this person and the victim was, at least it was okay to discuss it.

Chen Yi: "Let's not talk about doubts, let's think about it carefully, Gao Xiaofei has actually experienced three poisonings, the first is chronic iron poisoning, the second is seafood and vitamin reactions, and the third is fatal trivalent arsenic. ”

"The seafood reaction came from Zhao Jianhui, and the deadly poison came from the murderer, so what about chronic iron poisoning, is it possible that it is also man-made?"

Everyone thought about it, and the fastest reaction was Zhuge Cong: "Chronic iron poisoning is a long-term use of iron supplementation drugs or a long-term high-iron diet, and the one who is most likely to do this is her grandmother." ”

Chen Yi nodded: "Yes, if it is really artificial, her grandmother is very suspicious, and the motive is ...... can also guess, for example, because of the death of his son and grandson, Gao Xiaofei was angry. ”

Qin Fei said: "Team Chen, does this have anything to do with Gao Xiaofei's murder?" ”

Chen Yi: "Maybe it has a relationship, maybe it doesn't." ”

Qin Fei was surprised: "What do you mean?" ”

Chen Yi took a puff of cigarette and said: "The key point is whether there are people who have been ignored, the investigation of this case has been very comprehensive, we have all met the suspect just now, to be honest, I haven't found the suspicion." ”

"Since this is the case, let's temporarily take our eyes off the four people and put it on Grandma Gao Xiaofei, who has the most adequate conditions for committing the crime."

"Now I put forward a hypothesis, assuming that the murderer is Gao Xiaofei's grandmother, what do you think her motives are?"

Several people fell silent, this assumption is still relatively bold.

(End of chapter)