At around 7 o'clock in the morning on May 24, Gu Song was woken up by a ringtone on his mobile phone. When he picked up the phone in a daze and heard that another murder had occurred at the Normal University, the whole person instantly sobered up.

He got up quickly, got dressed, washed, and left the house in less than five minutes.

Coming to the family area of Normal University, Gu Song quickly found the No. 4 family building where the murder occurred. There were several police cars parked downstairs with flashing lights, and many onlookers had gathered around. Most of these people are residents who live nearby, and some students have heard the sirens and rushed to see the excitement.

Gu Song parked the car on the side of the road and hurriedly walked towards the place where the crowd gathered. As soon as he walked a few steps, he suddenly saw a familiar figure crowded into the crowd watching the excitement, and he couldn't help frowning depressedly.

He took a few steps, pulled his mother out of the crowd, and said in a reproachful tone, "Mom, didn't I tell you that you should stay at home as much as possible lately. This murderer hasn't been caught yet, maybe he will be mixed in the crowd to watch the excitement now, how dangerous it is! ”

"Is it safe to stay home?" Qiao Nianzhen glanced at Gu Song, dissatisfied with her son's preachy appearance in front of her. "Teacher Liu was killed in his own home. Where do you say it's safe? It's not safe anywhere. ”

"Mom, do you know the victim?"

"It's all colleagues from the same school, why don't you know ......each other," Qiao Nianzhen said, his eyes were a little moist. Mr. Liu is a good person, he has no grudges and no grudges against others, how could he encounter this kind of thing. You said that this murderer is too bold, last time he killed a vice principal, this time he killed a teacher, should he kill a student next time? ”

"Shh Gu Song hurriedly made a silent gesture, "Mom, calm down, the situation hasn't been clarified yet, don't talk nonsense." ”

Qiao Nianzhen realized that he was a little out of shape, so he quickly covered his mouth, looked around cautiously, lowered his voice and asked, "Son, what is the murderer doing this for?" ”

"How do I know?" Gu Song sighed helplessly, and saw that Forensic Doctor Chen and Ruonan were walking into the unit building where the crime occurred not far away, so he patted his mother's shoulder and said, "I have to go to work." Don't look at the excitement, hurry home. ”

According to preliminary information, the victim of this case is named Liu Yiping, female, 67 years old, a retired teacher of R City Normal University before her death, and her family lives in Room 302 of Building 4. Two years ago, after the death of the victim's wife, the victim lived alone here.

The victim also has a daughter who went to Shanghai after graduating from university, and the police have contacted her, who is currently on her way back to R City.

At around 7 o'clock this morning, Mr. Huang, who lives in room 301, went out to work and noticed that the door of Mr. Liu's house opposite was open. Under normal circumstances, Ms. Liu would go to the nearby park to exercise at 5 a.m. and return home at 6 a.m. every morning. Mr. Huang thought that Mr. Liu had forgotten to lock the door after he came back, and wanted to knock on the door to remind him. Who knew that when he looked in through the crack in the door, he found that Mr. Liu was lying on the floor of the living room on his side, his head seemed to have been injured by something, and a large pool of blood flowed.

At first, Mr. Huang didn't realize that Mr. Liu had been killed, thinking that the old man had just accidentally fallen and hit his head somewhere. It wasn't until he got closer that he realized what a terrible thing had happened across the street from his house.

According to eyewitnesses, the victim also went out to exercise this morning, and Mr. Li, who also lives in the family area, met the victim and greeted him.

According to the victim's usual habits, the victim returned home at around 6:30 a.m., and the body was found by the neighbor opposite at around 7 a.m. Then the murderer's time of committing the crime was within this short half hour.

Walking into the scene of the crime, a pungent smell of blood came to my face. Gu Song glanced around at this old, old but neat and clean two-bedroom house, and felt an indescribable feeling of depression in his heart. Perhaps because the victim, like his mother, is a retired teacher at a normal university and lives here alone all year round, he always can't stop worrying about whether it is safe to let his mother live here until the murderer is caught.

The victim's body was lying on its side less than half a meter from the dining table, with its feet facing the direction of the door, half of its head had been dented and deformed. In the blur of brain tissue, a few strands of silver-white hair were faintly visible, suggesting that the victim was just an unarmed and frail old man.

"Did the same killer do it?" Gu Song asked Forensic Doctor Chen, who was doing a preliminary autopsy.

The latter nodded lightly and said, "The tools that caused the injuries are basically similar to the previous case, and it is very likely that the same murderer committed the crime." ”

"Wouldn't it be someone who took advantage of the chaos to imitate the crime?"

"Probably not." Qiao Sheng replied for Forensic Doctor Chen, "We have not announced the specific cause of Vice President Li's death to the outside world. The modus operandi of the two cases is highly similar, and nine times out of ten the same murderer committed it. ”

"So......" Gu Song suddenly remembered something, and hurriedly asked, "What about Qiye?" ”

"He's still in the criminal police team." Qiao Sheng said with a wry smile, "It seems that we did catch the wrong person this time." The murderer is not him. ”

"Team Joe." Qi Ruonan walked out of the bedroom and reported briefly, "There is no trace of being turned over at the scene, and the victim's mobile phone, wallet, and 10,000 yuan in cash hidden in a drawer have not been taken." Obviously, the murderer did not commit the crime for money. As in the previous case, the killer inflicted excessive harm on the victim, which is a classic revenge killing. ”

"But ......" Gu Song frowned suspiciously, "After Li Tianhua was killed, didn't there be traces of someone turning over his office?" Why isn't there here? ”

Qi Ruonan replied: "Although the office was turned over, it was confirmed by the assistant and the family that the previous victim did not lose anything important, so could the murderer just disguise himself as the scene of the crime of embezzlement?" And by the time the second case progressed, the murderer was too lazy to disguise it anymore. ”

"If it's for disguise, he should symbolically take something of value."

"Maybe the killer didn't think it that way."

"No, it's not." Gu Song shook his head slowly, feeling that the development of things was getting more and more weird, and he was becoming more and more unable to see the murderer's true intentions.

At about three o'clock in the afternoon, Qi Ye finally left the criminal police team. He returned home physically and mentally exhausted, and as soon as he entered the door, he saw his roommate Lin Chang packing and packing his things.

Lin Chang is a third-year student majoring in computer science at Normal University. Because I usually like to play the piano and sing, I haven't lived in the student dormitory since the first semester of my sophomore year. By chance, Qi Ye met Lin Chang in a bar. The two have similar interests, and chatting about music is like finding a confidant in life.

At that time, Qiye had just changed his new residence, and he was worried that there was no one to share the rent with him. After Lin Chang heard about this, he didn't think about it and moved into his house with his luggage. In this way, the two have been living under the same roof for almost a year.

Different from Qiye's melancholy personality, Lin Chang is a lively and cheerful and approachable boy with a happy family and enviable parents.

Although Qi Ye never said it, he envied Lin Chang's background from the bottom of his heart. Sometimes looking at Lin Chang, Qi Ye can't help but fantasize, if he can grow up in a healthy family, will his parents send him to learn music? Just like Lin Chang, he has been playing piano since elementary school, learning guitar, arranging, and writing songs. Instead of relying on everything on his own, he graduated from high school at the age of eighteen with a guitar on his back and wandered the world.

Although after six years of hard work, Qiye can finally support himself with music, and has gained some fans in the local area, and occasionally girls confess to him, but this still can't change the inferiority complex in his bones.

He never told Lin Chang his story. Except for Xiaolong, none of his friends knew what kind of family he came from and what kind of experience he had. But even Xiaolong didn't know how his life had changed when he was twelve years old. He made what he thought was the right choice, but he struggled to move forward with contradictions and sins in the rest of his life.

The living room was already full of Lin Chang's personal belongings, and the Yamaha double-row keyboard that was originally placed in the room was also packed in a cardboard box and stacked at the door. Seeing that all the items were about to be packed, Qi Ye hurriedly bypassed the debris under his feet, grabbed Lin Chang's arm and asked, "Xiao Lin, what are you doing here?" ”

"Move." Lin Chang shook off Qi Ye's hand and replied mercilessly, "I don't want to live with a murderer. ”

"When did I become a murderer?"

"Hmph, you don't have to hide it from me." Lin Chang sneered, turned around and looked directly into Qi Ye's eyes. "Last night, a couple of police officers came to the house to search for something and asked me a few strange questions. I'm not stupid, and I can certainly guess what they're investigating. If you didn't break the law, why did they arrest you? What are you doing? ”

"No, it was a misunderstanding, they were mistaken. Can you please listen to me? ”

"You don't have to explain to me, I'm not interested in knowing what you're doing out there. From now on, we are no longer friends. Whether you kill someone or set fire, everything has nothing to do with me, the two of us should have never known each other, each go our own way, and no one should provoke anyone. After Lin Chang finished speaking, he took out his mobile phone and dialed the moving company.

Seeing that Lin Chang had made up his mind, Qi Ye hurriedly snatched his mobile phone, pressed the hang up button, threw it on the dining table next to him, and said, "Wait, you can't just leave." ”

"What are you going to do?" Lin Chang frowned in disgust and asked in a provocative tone, "Do you want to kill me too?" ”

"Why am I killing you?" Qi Ye shook his head with a wry smile, and then asked, "Two days ago, there was a homicide in your school, and your vice principal was killed, do you know about it?" ”

"Of course, I know, it's gone crazy in school. Why do you ask this? ”

"The police suspect that I killed Vice Principal Li. They took me back to the criminal police team for investigation, and that's what it is. ”

"What did you say?" Lin Chang's mouth opened wide in surprise and looked at Qiye in disbelief. He guessed that Qi Ye might have caused trouble outside, and even involved a life lawsuit, but he never thought that the brother who got along with him day and night turned out to be the suspect who killed Vice Principal Li.

Fear came back to my heart. Lin Chang grabbed the backpack thrown on the ground, carried it to the side, and reached for the mobile phone on the dining table, trying to escape from the room as soon as possible. Who knew that at this time, Qiye stopped his movements again. "Can you listen to me?"

"Say, say what?" Lin Chang's voice trembled a little.

"This morning, there was another homicide near your school. Although the police kept the news tight, the incident spread quickly on campus. You'll know if what I'm saying is true when you go back to school. The police believe that the same murderer committed the two cases, and my suspicion has been cleared. Believe me, I really didn't kill anyone. ”