The deceased in the blood classroom case, Du Wei, was not a native of H City, and his interpersonal relationships were very easy to investigate.

Within 24 hours of the incident, all the people involved in the bloody classroom case were interrogated, but everyone had a clear alibi, and there was almost no motive for the crime, so the suspect had to be released according to the procedure without any progress.

It wasn't until Hu Fei bluntly deduced the modus operandi that the facts of the case were clear.

Outside the interrogation room, Duan Ping interrogated all the people involved in the case according to Hu Fei's instructions.

"When I go in a moment, be sure to turn off the monitoring equipment. Hu Feizheng said: "All my conversations and actions are not enough for outsiders. ”

Duan Ping nodded and said, "What else do I need to do?"

"Start the car and wait for me at the door. Hu Fei thought about the worst outcome, got up and walked to the first interrogation room.

In the adjacent interrogation room, five suspects in Du Wei's case are detained, and five suspects have been ruled out by the police but have been interrogated again by Hu Fei.

In the first interrogation room, sitting was Du Wei's ex-girlfriend Li Yun, both of whom are high school alumni and are now studying in college in H City.

said that it was an ex-girlfriend, but in fact, before the case, Du Wei and Li Yun had broken up.

On the day of the case, Li Yun also came to the University of Science and Technology in order to completely cut off the emotional entanglement with Du Wei.

The important thing is that after returning to the school dormitory that day, Li Yun never went out again, and several roommates can prove that besides, it is not very likely that a thin girl wants to commit such a sensational murder.

The reason why Hu Fei put Li Yun in the first interrogation room is because this girl is only related to the murder case, not related, so it will also be a breakthrough in all mysteries.

Pushing open the door of the first interrogation room, the girl was already very anxious, Hu Fei sat down on the chair opposite, and flipped the transcript decently, "Li Yun?"

The girl nodded, looking at Hu Fei with a puzzled face, the person in front of her was really young, and the young one didn't look like a case officer at all.

"Du Wei is your boyfriend?"

"Ex-boyfriend. Li Yun was anxious to clear up the relationship between the two, "Officer, his death has nothing to do with me, I never left the dormitory that night." ”

"Don't be nervous. Hu Fei pursed his lips, "Just take it as a small talk, do you have a new boyfriend?"

Li Yun was silent for a while before admitting, "Yes, I don't want to continue with Du Wei." ”

"You're from the same place, and you're high school classmates, so you have a good relationship, why did you suddenly propose to break up?" Hu Fei really asked casually in a casual tone.

"Personality incompatibility. ”

Anyone can see that the incompatibility of personalities is just an excuse for prevarication, Hu Fei naturally won't believe it, and glanced at Li Yun with a little meaning, "Qian Chaoyang has said everything." ”

Li Yun's expression was still quite calm, but a trace of panic flashed in his eyes but he couldn't escape Hu Fei's eyes, but he didn't rush to ask, but calmly picked up the teacup and gently blew the hot air on the cup.

At this moment, there was a knock on the door, and Duan Ping handed over a document to Hu Fei and nodded to him secretly.

Roughly flipping through the information, Hu Fei's heart is also sinking.

Li Yun, who was admitted to H City Medical University with excellent results, is from Province C, and Du Wei is a fellow villager and classmate. My next words may bring up some unpleasant memories for you, so I'm sorry first. Hu Feizheng didn't look at Li Yun, closed the information, and looked directly at the other party sincerely.

Li Yun stirred her fingers anxiously, and her body kept trembling.

"Three years ago, there was a case in your hometown, a wandering madman was killed near the campus, do you have any impression?"

Li Yun's expression suddenly tightened, and she shook her head frantically, "I don't remember." ”

"You were in your first year of high school. Hu Fei's tone was also a little heavy, "The madman who was killed was actually a rapist. ”

A flash of fear flashed in Li Yun's eyes, she could no longer be strong and calm, and tears rolled down, "Please, don't force me." ”

Hu Fei sighed, how could he hope to stab the pain in the hearts of others, but in the face of the truth, all regret and helplessness are necessary means.

There was silence outside the interrogation room, and in front of the glass window, Duan Ping was speechless for a long time.

After a while, Hu Fei walked up to his side and patted him on the shoulder, his eyes already firm.

"The motivation is clear. ”

"But the suspect still has an alibi. Duan Ping frowned.

Hu Fei said: "It's easy to explain, because the targets of these people have been exchanged." ”

"Exchange killing?" Duan Ping suddenly exclaimed, this can indeed be explained.

In fact, there are similar episodes in many mystery novels. Hu Fei walked to the interrogation room next door, turned around and said, "Wait for my news." ”

In the second interrogation room, a boy with glasses is staring blankly.

"Senior, are we meeting again?"

The man with glasses came back to his senses in a trance, "Is that you?"

This person was the moderator of the forum of the University of Science and Technology that Hu Fei had met in the small restaurant that day, and the two had a brief exchange.

"Seniors have a good memory. Hu Fei sat down with a smile, "Let me introduce myself, I am a student of the Police University and a special investigator of the police department in the jurisdiction, and I am here this time to hope that you can assist in the investigation." ”

The man with glasses was slightly panicked, and said stiffly: "What investigation, I don't know what you're talking about." ”

Hu Fei's eyes were like electricity, and he looked directly at the other party and said, "Your stepfather's death has nothing to do with you?"

Although the man with glasses did not admit it, his tone was not as tough as before, "The police have investigated and proved that it was an accident." ”

"A man-made accident. Hu Fei sighed secretly, "It's also a deliberate vendetta." ”

The man with glasses didn't dare to look at him anymore, and his eyes drooped.

"You lost your father when you were young, and when you were seven years old, your mother took you to remarry an electrical worker who lived by trade. Hu Fei said slowly: "Although your stepfather is busy, he makes a lot of money, which can fully pay for the life of your mother and son, and you are also competitive and admitted to the University of Science and Technology, but under the surface of harmony, your stepfather is an out-and-out domestic violence maniac." ”

The man with glasses showed a hint of ruthlessness on his face, gritted his teeth and said: "He is a madman, as long as the slightest trouble goes wrong, he will punch and kick my mother, I have been thinking about killing him all the time over the years." ”

Hu Fei's heart was churning, but he still maintained a calm tone, "So after you are admitted to the university, with independent economic conditions, you can finally get rid of your stepfather's shadow and kill him as soon as possible." ”

"Officer, I think you're mistaken. After straightening his glasses, the boy chuckled and said, "Electricians are electrocuted, it's very common, I was working as an exchange student at another school, so I didn't have this time." ”

Hu Fei said: "You are indeed not here, because it is the waitress of the off-campus restaurant who did it for you." ”

As soon as these words came out, the man with glasses immediately panicked.

"Before you went out, you tampered with the external equipment, and by falsely claiming that there was a problem with the restaurant circuit, when your stepfather was checking, the waiter turned on the electric switch, and the external equipment was exposed, and your stepfather was electrocuted on the spot. No matter how the police investigate, they can only determine that the accident was caused by the aging of the equipment, and you are far away, of course, you have escaped the punishment of the law. ”

"I don't know that waiter at all, why would people take such a big risk for me?" the man with glasses regained a little composure at this time.

"Because you have an exchange. Hu Fei said in a deep voice: "And the person you are responsible for is Gao Yunhai's wife." ”

Pushing open the door of the third interrogation room, the girl was helpless as if she had been frightened.

"I'm sorry. Hu Fei went straight to the point and expressed his sincerest sympathy for everyone's suffering.

The girl clutched the cross on her chest, hoping that Allah could offer the last protection.

"Working in a small restaurant, you can't make a lot of money. Hu Fei's eyebrows were full of sadness, and he whispered: "You borrowed the money to repay your brother's debt from the boss?"

The girl didn't answer, just curled up close to the chair.

"Of course your boss won't be so kind, a young and beautiful girl must have suffered a lot. ”

There is no need to explain many words in it, and those obscene and disgusting memories have long been deeply imprinted in the girl's heart.

Hu Fei deliberately didn't look at the other party, and continued: "There was a fire in your restaurant some time ago, because someone cut the gas pipe, maybe some slightly drunk bosses woke up and lit a cigarette, and with a bang, the fire spread, and people died no longer through." ”

Hearing this, the girl suddenly laughed, "I endured nausea and drank with him, just so that he couldn't smell the smell of gas, even if he burned to a dry corpse, that face was more pleasing to the eye than when he was lying on me." ”

Hu Fei lamented: "And your responsibility is to lie about the circuit failure of the restaurant earlier and electrocuted the maintenance workers, do you recognize these?"

"Why should I confess?" the girl suddenly became insane and raised the cross above her head, "Allah will bless us, I have seen the gates of heaven." ”

Ignoring the girl's crazy words, Hu Fei turned around and walked into the fourth interrogation room.

At the table, a young man who looked like a student put his fingers together, closing his eyes and recuperating.

Hearing the sound of the door, he slowly opened his eyes and nodded at Hu Fei.

Hu Fei also sat down with a smile, gently closed the file in his hand, and looked back, "Qian Chaoyang." ”

Qian Chaoyang also laughed, "With this kind of opening statement, and at such a young age, it seems that you are not a police officer." ”

"Yes. Hu Fei admitted indifferently, "I'm just coming over to tell a story, and I'll leave after getting the answer to the mystery." ”

"Oh. Qian Chaoyang agreed, "I've been sitting here for a few hours, I'm bored, and some people say it's not bad to tell stories." ”

Hu Fei's eyebrows frowned slightly, and the popularity in front of him was extraordinary, calm and calm, worthy of the identity of a top student of the School of Chemical Engineering of the University of Science and Technology.

A student who studies hard and lives as usual while carrying many years of bloody cases is not something ordinary people can do.

"You are from Province C, and you are fellow villagers with Du Wei and Li Yun?"

"I'm from Province C. Qian Chaoyang nodded and said, "But I'm not familiar with the two people you said." ”

Hu Fei banged on the table and suddenly asked, "You cut the gas pipe in the restaurant, right?"

Qian Chaoyang didn't react, and asked rhetorically, "What restaurant? What gas?"

Hu Fei shook his head with a smile, "It's okay if you don't admit it, let's talk about a case many years ago." ”

Qian Chaoyang also smiled and said, "Okay, tell me the story you know." ”

"The beginning of the story begins three years ago, next to a high school in Province C, a despicable criminal raped a girl who had just finished school by moonlight. This beginning is a bit depressing, huh?" Hu Fei asked in a low voice.

Qian Chaoyang shrugged his shoulders meaninglessly, "It doesn't matter if it's tragic or comedy, I'm listening." ”

"Yes. Hu Fei cleared his throat and continued: "At the time of the incident, a senior high school student happened to pass by, and he immediately took action and found a wooden board on the ground and slapped it on the back of the prisoner's head, but unfortunately he did not find the long nail nailed to the wooden board in the dark night, and this time it killed the prisoner. ”

Qian Chaoyang raised his eyebrows and said softly: "Good job." ”

Hu Fei's mind sank more and more, until this time Qian Chaoyang was still so calm, and he was really a powerful character.

The student didn't expect to beat the prisoner to death, so he agreed with the bullied girl that no one would mention the matter, and the two broke the wooden board of the murder weapon and burned it, erasing the fingerprints, and it happened that it was pouring rain that night, and the footprints of the two were also washed away, so when the prisoner's body was found the next day, there was not even any clue to investigate, and the matter was over. If this is all the story happens, then there seems to be room for reversal of this tragedy. ”

"Nobody cares if the scum dies, but I don't like to hear stories that don't have an ending. Qian Chaoyang clasped his hands together and tilted his head to look at Hu Fei.

"I don't like to say half of it either. Hu Fei sighed and nodded, "But what no one expected was that everything that happened that night was seen by a boy who passed by from a distance. The city construction in the small county town is poor, and the remote place is even less light, so the boy just saw the process, but he couldn't recognize who the two opposite were. It wasn't until a year later that the boy actually became boyfriend and girlfriend with the girl who was bullied, and by chance, he found the bright shoes that the girl was wearing that day, and under questioning, he learned the identity of the student who killed by mistake, but at this time the student was already studying in H City, which inspired the boy's fighting spirit, and after the college entrance examination, he was actually admitted to the same university. ”

"It's a bit verbose. Qian Chaoyang commented simply, "It's easy for the audience to figure out the relationship between the characters in such a circle." ”

Hu Fei smiled dumbly, and his painstaking means seemed to be not good enough, so he stopped selling Guanzi, "Of course, the girl in the story is Li Yun, and his boyfriend is your junior brother - the deceased Du Wei." ”

"So, that student who accidentally killed someone is me?" Qian Chaoyang covered his mouth very contrivedly and called softly.

Hu Fei sighed again, "In fact, Du Wei's heart is also very distorted, and he is haunted by the past when Li Yun was raped, and over time it has turned into a comparison and hatred for you, so after Li Yun proposed to break up, he blackmailed you many times in a row and extorted a lot of money." ”

Qian Chaoyang shook his head gently, "I'm a bitter student, how can I have any money." ”

Seeing the other party's attitude, Hu Fei simply said briefly, "Du Wei only accepts cash, so there is no transfer record, but the prize money of the project you participated in has been decreasing in the past few months." ”

"I like to spend time drinking, can't I?"

Hu Fei didn't pay attention to what Qian Chaoyang said at this time, and continued to say to himself: "I'm afraid that you had already murderous intentions at that time, so with the help of the haunted legend of the University of Science and Technology, you deliberately designed a murder." ”

"I also know a rough idea of this case. Although Qian Chaoyang's tone was as usual, his eyes were already cold, "The case is full of suspicions, isn't it a bit hasty to put the suspicion on someone like me who has an alibi." ”

"The so-called alibi is of no use at all. Hu Fei said: "You killed the restaurant owner for the waiter, and Gao Yunhai killed Du Wei for you." ”

"What with what. Qian Chaoyang's eyes were sharp, "I don't know this group of people at all." ”

"And quibble. Hu Fei stepped forward and tore off Qian Chaoyang's shirt, revealing a cross exactly like the waitress, "The four of you are all members of the Mutual Aid Christian Association, and the murderous plans of the other three were also planned by you for them!"