There were three women standing in front of Qin Mu, including the fat girl who had stopped him from investigating before, because he was trapped here by the police, Qin Mu found that each of them was very unhappy......

"I'll introduce you to the toilet in the order in which you enter the toilet. ”

Yu Zheng pointed to the "hateful-looking" woman just now and said: "This first one is the school's volleyball teacher Yang Meili, she"

Before Yu Zheng finished speaking, Yang Meili interrupted angrily: "Captain Yu, why are you introducing us to this dark guy? Is he a policeman?"

Yu Zheng's temper was quite gentle, and he was interrupted by him, but he was not angry, and explained: "He is the same as you, he is a teacher at school, why, haven't you seen him?"

"No, I've never seen him, so since he's not a policeman, he's not qualified to ask me, can I choose not to answer?"

This woman is not only annoying, but also very conceited, because Qin Mu noticed that she said "I am not qualified to ask me", not "I am not qualified to ask us", obviously she feels that Qin Mu can ask the other two people, but she is not worthy of asking herself, she and the other two have different status.

First stopped himself from investigating, and now he looked down on himself, Qin Mu was angry.

Looking at the woman's plaster cast and bandaged left arm, Qin Mu immediately said coldly: "Of course you can choose not to answer, because your answer can't change the fact that you are a murderer." ”

Hearing Qin Mu's words, everyone's eyes suddenly widened, and even Lin Yaoyao, who had been unfazed, set their eyes on Qin Mu.

"You fart! I am the first person to enter the toilet, if I kill Li Jing, then Wang Na, the second person to enter the toilet, will definitely find the body, why didn't she find it?"

Qin Mu sneered and said, "She didn't find the body, but she bumped into the murderer!"

Turning his head, Qin Mu looked at Wang Na next to him and asked, "Do you feel that you can't open the door?"

Hearing this, Wang Na nodded. "Well, and as soon as I opened the door of the toilet, I heard a bang in the toilet cubicle, that is, the toilet cubicle where Li Jing was, I didn't care at the time, I just thought that the people inside might have dropped something, and now that I think about it, it should be the murderer of the robbery who was killing people at the time, and when he heard me come in, he dropped the short knife and ran out of the window. ”

While Wang Na was speaking, Qin Mu carefully observed her appearance, goose egg face, slender eyebrows, ponytail, and sky-facing nose, if Wang Na could attract Qin Mu, it was her unusually fair skin.

After listening to Wang Na, Qin Mu put away his observational gaze, looked directly at Yu Zhenglang and said, "Captain Yu, the evidence is conclusive, you can arrest people now, the murderer is her!"

Following Qin Mu's fingers, everyone looked at Yang Meili.

"You fart, Captain Yu, don't listen to his nonsense, Wang Na bumped into the murderer and killed someone, but I was no longer in the toilet at that time, how could I kill Li Jing, and Lin Yaoyao has Li Jing's blood stains on her body, the evidence is conclusive, the person who should be arrested should be her!"

Gu Gongming thought for a while, looked at Qin Mu and said, "Teacher Yang is right, she really has no possibility of doing it...... However, there is another possibility, that is, after she came out of the toilet, she went around the window behind the toilet and killed Li Jing, but this possibility is also ruled out, because the surveillance at the back of the toilet only captured Professor Lin, not her. ”

"That's right, Yang Meili really can't commit murder, if you think she is the murderer, then show her killing process and evidence. Yu Zheng looked at Qin Mu seriously and said.

"That's right! Another thing that can prove my innocence, Li Jing was stabbed to death by someone inserting a knife into the heart, normally speaking, when I pull out the knife, there will definitely be a lot of blood splashed, but there is no blood on my body at all, how do you explain it? The whole process from the time I walked out of the toilet to the time the police sealed off the canteen was only half an hour, so I didn't have time to clean up the blood stains at all, so you tell me, if I am the murderer, why don't I have a little blood on my body?"

"Don't give up until the Yellow River. With that, Qin Mu lit a cigarette and slowly sat down on the student table next to him. "Based on my witnesses, as well as some reasoning, I will give you a brief description of her murder method, this is a premeditated murder case, Yang Meili has probably simulated it many times before acting. ”

Spit out a beautiful smoke ring, Qin Mu continued: "After the deceased entered the toilet at two o'clock, Yang Meili followed closely behind, and while she was unprepared, Yang Meili strangled the deceased with a rope prepared in advance, and after that, Yang Meili took out the short knife she carried with her and inserted it into her heart, completely killing her!"

"Teacher Qin, are you saying that the deceased was not killed in the toilet cubicle?But if this is the case, why is there so much blood on the wall of the cubicle?Shouldn't the blood stains be outside the toilet?" Yu Zheng wondered.

"That's right, the deceased was not killed in the cubicle, because only in this way can the secret room in the toilet be created, I estimate that the deceased was killed by Yang Meili before he was thrown into the space above the toilet cubicle, because she was wide and fat, she couldn't cross the space above at all, which perfectly ruled out the suspicion of murder for her. As for the bloodstains, you'll find out later. ”

"You fart, didn't you see my left arm still in a plaster, my left hand is injured, how can I throw the dead into the cubicle with only one right hand? You fool don't want to be a detective here, okay?"

"Noise!" Qin Mu frowned, and directly flicked half of the cigarette butt in his hand towards him!

"Ahh

Angered by himself again and again, Yu Zheng couldn't help it no matter how good his temper was, and immediately shouted angrily: "Go back, listen to him, you haven't gotten rid of the identity of the suspect yet, it's best not to force me to use coercive means!"

Hearing Yu Zheng's words, Yang Meimei's face turned blue for a while, purple for a while, although she was angry, she didn't dare to act again, she shook her face indignantly, and stopped on the spot.

"The article on your left arm is too big, I won't talk about this for now, I'll continue to talk about what you did next. ”

Qin Mu lit another cigarette, and while smoking, he looked at Yu Zheng and said, "Captain Yu, do you know why there are so many holsters on the ground?"

"I don't know. ”

"I know, I'm telling you, that the murderer is the holster. ”

Hearing this, everyone was stunned.

Looking at the stunned expressions on everyone's faces, Qin Mu continued: "To be precise, the holster is the murderer that Wang Na bumped into. ”

Qin Mu took out a holster from his pocket and looked at everyone with a smile. "This is a holster I took out from the scene of the crime, you see how I used this holster to imitate the murderer, that handsome policeman, come here, hey, that's right, it's you!" Qin Mu pointed to a policeman and said.

"You go, cooperate with him. Yu Zheng commanded.

After the police walked next to Qin Mu, Qin Mu whispered into his ear.

Moments later......

"Okay, I see!" The policeman ran straight to the toilet according to the method Qin Mu told him.

"Teacher Qin, what did you tell him?" Yu Zheng was confused by Qin Mu.

"I asked him to restore the murder scene, and now everyone except Wang Na will come to the toilet with me, Wang Na, I'll let you in later, and you can come in." ”

"Okay. Although she didn't know why, Wang Na still agreed.

Soon a group of people walked into the toilet room, except for Lin Yaoyao.

Qin Mu felt as if she was indifferent to everything, and it seemed that only research could stimulate her interest.

Qin Mu leaned to one side and didn't speak, and everyone watched the movements of the young officer's hands.

I saw the policeman holding a silver holster in one hand, first pressing the holster in his left hand into a double line, and then passing it through the holster loop in his right hand, and then passing one end of the double-line holster through the middle of the double line, and then pulling it, the two holsters were connected into a long line.

Fixing one end of the long line to his arm, the young policeman continued to take out a pile of holsters and cycle the process, but after a while, a long elastic line formed by a rubber band appeared on his hand.

After doing this, the police took out a short knife of the same standard as the crime scene, and used the same wiring technique to connect the end of the long line of the rubber band from the ring at the end of the handle.

The policeman took the prepared tool, hung the rubber band on the doorknob without a knife, and then inserted the end with the knife into the body of the dummy, and then he took the dummy to the door of the toilet cubicle, and threw it from the top of the toilet cubicle.

Looking at the long line of holsters that connected diagonally from the top of the compartment to the top of the doorknob, everyone seemed to understand something.

"Mr. Policeman, please slowly open the door from here and go out, and call Miss Wang Na in. ”

Qin Mu stretched his waist and looked at the policeman and said.

"Good. ”

The policeman carefully opened a crack in the door, walked out, and then slowly closed the door again.

After a while, Wang Na's voice came from outside the door: "Can I come in?"

"Come in. ”

As soon as Wang Na pulled the door, she felt a little struggling!"Huh, why is it the same as the feeling I felt when I pulled the door before?"

"You continue to pull harder, just like you did before. Qin Mu shouted outside the door!

"Good. Wang Na exerted her strength again, and the door was suddenly slowly pulled open, and as the door opened wider and wider, the long line of the holster naturally collapsed tighter and tighter!

When the door opened for a short time, the knife was pulled out directly from the dummy's body, the force point at one end disappeared, and the holster on the doorknob instantly collapsed!

With a bang, the knife fell into the compartment, and because the long lines of the holster were all connected, it lost the restraint of the strength of both sides, and the holster suddenly fell apart and scattered all over the ground.

Seeing this scene, Yang Meimei's pupils instantly shrank to the size of a needle's eye, and a thick horror surged up on her face.

"What else do you have to say, murderer, Miss Yang Meili?" Qin Mu said with his hands in his pockets and looked at Yang Meili indifferently.