The birdsong in the early morning is crisp, and on a weekend like this, it always feels extraordinarily peaceful.

Liu Xiaoyu slowly opened her eyes and felt that something was wrong. As soon as I wanted to stretch, my hand touched my roommate next to me. "How did I sleep with you. ”

Liu Xiaoyu yawned and turned her head, only to see the bloody head of her roommate next to her, fear quickly swept over her body, and she was horrified to find that she was holding a wrench in her hand.

"Ahh......h

At this moment, Zhao Yingying, another roommate who was supposed to go home, opened the dormitory door. "Ahh......h

"Yingying, listen to me!" Liu Xiaoyu got up anxiously and approached Zhao Yingying, "I don't know what's going on." Seeing Liu Xiaoyu walking towards her, Zhao Yingying was so frightened that she fled in a hurry, shouting "Call the police!" as she ran, "Kill someone!"

The police soon arrived at the scene, and because there were eyewitnesses, Liu Xiaoyu was quickly taken back to the police station along with Zhao Yingying.

Looking at the frightened Liu Xiaoyu, Lin Mu poured her a glass of warm water first, watched her drink a few sips and calmed down a little and asked, "You said you don't know what's going on?"

"I don't know, my mind is so messy. Liu Xiaoyu rubbed her temples, and for a moment she didn't know what she should be worried about.

"Listen to your roommate, you have sleepwalking?"

"Hmm. Liu Xiaoyu nodded, almost crying.

"There is no treatment?" What made Lin Mu care was whether Liu Xiaoyu really had sleepwalking symptoms.

"I've been treated, and the effect is not bad, but occasionally I still sleepwalk, who ......knows" Liu Xiaoyu's face turned pale in an instant, and she couldn't figure out how she could make such a move.

Looking at Liu Xiaoyu's appearance, coupled with Zhao Yingying's witnesses and fingerprints on the wrench, nine times out of ten she is the murderer.

At the same time, Zhao Yingying was also making notes.

"Why did you suddenly appear in the dorm room?"

"My parents are on a trip, and it's not interesting to stay at home, so I want to go back to the dormitory early. Zhao Yingying and the other three girls are all locals and go home on weekends, so Liu Xiaoyu and the deceased Zeng Yan stay at school every weekend.

"Did you see Liu Xiaoyu sitting on Zeng Yan's bed, covered in blood, with a wrench in her hand?"

"Yes. She was very sure that she was not mistaken, and believed that Liu Xiaoyu was the murderer.

The policeman on the opposite side quickly recorded it, and then asked, "What does Liu Xiaoyu usually do when he sleepwalks, or has he ever made some outrageous actions?"

Zhao Yingying frowned and thought, "She usually sleepwalks, that is, she gets up and walks around, sometimes she will talk to herself with some things, she looks very crazy, and we don't dare to wake her up, I heard the old man say that waking up sleepwalking people will make her lose her soul." ”

"You mean she sometimes holds something?" grabbed the important information, and the police interrupted Zhao Yingying's words for verification.

"Yes, sometimes with a pen, sometimes with a book. ”

"That wrench, is it Liu Xiaoyu's?"

"Our dorm. Zhao Yingying explained, "Because the door of the bathroom in our dormitory is always broken, and we are afraid that we will report it to the school and say that we have broken it, so we repair it ourselves." ”

"How is the relationship between the two of them?" asked this, the police were still not sure that a person would kill someone in his dream, so he could not use this reason to commit murder.

"It's good, our dormitory is quite harmonious. Zhao Yingying paused and added, "Although it may not be useful, I still feel that I should say it, and on Tuesday, I heard the two of them arguing." ”

"Why are you arguing?" the policeman's eyes lit up, and this may be the motive for the killing.

"I don't know, I also happened to see them at the staircase that day, and Xiaoyu looked angry. ”

"Oh. Okay, thank you for your cooperation, please wait here for a while. After speaking, the policeman got up and opened the door and walked out, walked to the interrogation room where Lin Mu was, and handed him the transcript.

After reading the transcript, Lin Mu asked Liu Xiaoyu, "You quarreled with Cao Yan this Tuesday, why?"

"Because...... A man. Liu Xiaoyu lowered her head, and her voice was as low as a mosquito.

"Why?"

"We both liked a senior, and she said that fair competition was good, but she hid from me and dated him. ”

"So you killed her?" Lin Mu tapped his fingers on the table, staring at Liu Xiaoyu's eyes.

"I didn't!" Liu Xiaoyu blurted out, and quickly changed his words, "Maybe, I don't know." She was so upset that she didn't even know what was going on, and how she could defend herself.

Lin Mu didn't speak, and only ordered two policemen to guard Liu Xiaoyu and go out, ready to collect information from others.

Before he had walked a few steps, Zhen Zheng pulled Lin Mu in a hurry, "Let's go, let's go to the scene of the crime again." ”

"Discovery?"

"No," the two walked to the door of the police station, Zhen Zheng got into the car and said, "But I have a little doubt." ”

A cordon was set up at the entrance of dormitory 401, and the two men explained the situation to the two police officers at the door. Skillfully put on the footmuff, put on the gloves, and walked in.

"What are you looking at?" Lin Mu looked at Zhen Zheng looking at the bed in a daze, and couldn't help but ask.

"I detected that the deceased had taken sleeping pills, but in normal doses, so she was killed in a deep sleep"

Indeed, according to Zhao Yingying, Cao Yan has a very serious insomnia, so she has to rely on sleeping pills to fall asleep. This is also the reason why there is no trace of resistance at the scene.

"The blood stains are not right. Zhen Zheng drew circles in the air with his hands, "Here, here, it's not right! It stands to reason that if the deceased was killed by Liu Xiaoyu with a wrench while he was asleep, the traces of blood splashing should also be distributed on the pillow sheets next to him, and even on the ground. ”

"The deceased slept in the back of the wall, and Liu Xiaoyu should have climbed into bed if she wanted to kill her. "The dormitory of this school has bunk beds, and if you want to commit a crime in the bed, you have to climb into the bed of the deceased. The blood stains will also be partially blocked.

"Then at least there will be blood splattering here," Zhen Zheng pointed to a clean place on the pillow and said, "Do you remember the blood stains on Liu Xiaoyu's body?"

Lin Mu recalled carefully, when she saw Liu Xiaoyu, her face was covered with blood, and there were obviously more blood stains on the left than on the right, "It's as if she was lying next to Cao Yan!"

Zhen Zheng nodded solemnly, "This is where I suspect, the blood splash marks at the scene are not right, and the blood stains on Liu Xiaoyu's face are not right, I think when the murderer committed the murder, Liu Xiaoyu was lying next to Cao Yan!"

"The murderer is someone else!" the two said in unison, followed by a long silence.

I learned from the school that the monitoring broke down two days ago and had not had time to repair it. The murderer is likely to be specially selected at this time.

That is to say, Liu Xiaoyu is the murderer's substitute, perhaps it is a coincidence, or it may be a premeditation.

The two drove back to the police station, Zhen Zheng proposed to conduct a detailed examination of the body again, and Lin Mu returned to the interrogation room again.

"Liu Xiaoyu, does Cao Yan usually have a holiday with whom? or have you ever had any conflicts in your dormitory?"

Liu Xiaoyu was a little overwhelmed by this sudden question, she thought for a while and said, "We don't usually have any holidays, and it's okay to joke about it."

"What are you kidding?" Lin Mu knew deeply that for some people, jokes were based on the pain of others.

"That's it...... We will make some small jokes between girls in our dormitory...... "Liu Xiaoyu is a little embarrassed" such as ...... in terms of figure" Looking at Lin Mu, he was bound to ask a certain attitude, Liu Xiaoyu had to say it all in one go

"There are a total of six people in our bedroom, Cao Yan has the best figure, and everyone else is about the same, just Yingying, so we all like to joke about the two of them and make comparisons. It is estimated that it is precisely because of this that the senior will date Cao Yan. Liu Xiaoyu muttered dissatisfiedly, as if forgetting that she was still a suspect.

And Zhao Yingying on the other side is also similar to what Liu Xiaoyu said, but Zhao Yingying has a very sufficient alibi. Yesterday afternoon, when she came out of the dormitory building, she greeted the aunt of the dormitory manager, and the dormitory manager also remembered Zhao Yingying.

So, will the breakthrough be on the other three girls, Lin Mu thought and decided to go to them to ask about the situation.

"The three of us left after class yesterday afternoon, went shopping together, and then went to the premiere of a movie together, and then went to K songs, and we didn't go home until half past two in the morning," the other two girls nodded heavily next to them, and took out a large handful of small tickets.

"All of this proves that we weren't there at the time, we were three

They can also prove each other. Lin Mu rummaged through this pile of small tickets, the time of death of the deceased was from twelve o'clock in the evening to one o'clock in the morning, if the three girls were not lying, then who would the murderer be?

"How is Cao Yan and the other classmates in the dormitory?"

"That's good, isn't it? One of the girls looked at the other two, and after receiving the affirmation, she said, "She's good to anyone." A very kind girl. ”

"That'...... Who usually has the worst relationship with Cao Yan?"

"No, who would have a hard time with such a good girl. If you want to say that Liu Xiaoyu is almost the same, I usually think she is terrible, but now she is really murderous, I get goosebumps all over my body when I think about it. ”

"Yes, Cao Yan is usually willing to take care of Liu Xiaoyu, who knows that it will catch fire. ”

After listening to the words of the three girls, all the evidence was a mess, and Lin Mu had to start from scratch.