"The deceased Xiao Yang, male, 18 years old."

"I'm a third grader of Qingcheng high school."

"The total attributes of the three items are as high as 10 in the initial test. Tut Tut, it's only inferior to Gu team. It's a pity that you have a good seedling!"

Gu Sinan snorted coldly, "Lao Xu, say the point."

Xu Zhiyong was not angry and continued: "according to the preliminary investigation, the body spots on the deceased have spread. It is speculated that the time of death should be after school last night, that is, from 19:00 to early morning. The more specific time of death may have to wait for the forensic test results."

Gu Sinan nodded.

Xu Zhiyong squatted down, his expression gradually became calm, and his voice was as steady as an old dog.

"The cause of death should be the knife on the neck. It was clean and clean. There was no trace of struggle at the scene. It seems that the murderer should be an old hand and probably a... Professional. Otherwise, with the attributes of the dead and on the premise of exercising, he could not be killed by a knife without reaction."

"There was no other discovery at the scene, there was no trace of moving the body, and the blood spray shape was not interrupted. This should be the first scene. That's right."

"Is the scene a secret room?" Gu Sinan looked around and asked slowly.

Xu Zhiyong sighed: "it can be said to be or not. The deceased lived alone all year round, and his parents were not around. The door lock is just a three-level security algorithm. Even our people can crack the password in 12 minutes with ordinary equipment. If the murderer is prepared, the door lock is nothing to the murderer."

"Good!" Gu Sinan did not say a word of nonsense and directly directed the scene: "everyone, carefully search all the corners where the murderer may leave traces."

"Yes! Gu team!"

"Lao Xu, who reported the case?"

"Well, over there, it is said to be the deceased's classmate."

Xu Zhiyong pointed to the corner of the house.

Gu Sinan looked in the direction pointed by Xu Zhiyong, and a high school student who looked "ordinary" was buried behind the crowd.

His ordinary appearance is easily ignored.

The high school student's expression was driven by several sub situations. Seeing Gu Sinan looking, he was like a "frightened bird" and his body retracted into the crowd.

Gu Sinan, with keen intuition, interpreted the above information from a short face-to-face.

……

……

"Name?"

"Yilin."

"Gender?"

“?”

"Gender?" Seeing that Yilin lowered his head and didn't answer, Gu Sinan raised his voice and asked again.

"Male..."

"Age."

“18。”

"You were the first to find the body? How could you have the password for the door lock of the dead? What's your relationship with the dead?" Gu Sinan's mouth was like a machine gun. Du Du asked three questions in a row.

"This..." Yi Lin was slightly stunned, then pointed to Xu Zhiyong with a helpless face and whispered, "these uncle has asked once just now."

Xu Zhiyong pulled out of the corner of his eye, some couldn't see it, and stopped Gu Sinan who was about to attack: "Gu team, I just checked this student. He was the classmate of the dead. He had a good relationship with the dead. In the eyes of his classmates, he was honest. His parents worked abroad for a long time and had no problem."

After a pause, Xu Zhiyong handed the tablet to Gu Sinan, pointed to the content above and continued: "as for why he came to the deceased's house, it was because the deceased didn't go to school all day, and the head teacher asked him to find the deceased... I just confirmed with the deceased's teacher that there was indeed this thing. Well, there is no doubt."

Gu Sinan heard the speech and gave a light sigh. Then he stared at Yi Lin and remained silent.

She knew very well what Xu Zhiyong meant by "doubtful points".

In many classic murder cases, in order to eliminate their own suspicion, the murderer often goes the opposite way, takes the initiative to find the body and involves himself in the case.

This trick might have worked if it had been put at the beginning of the last century.

But now, this is a rotten routine mastered by every criminal investigation personnel.

Hum, this is the first lesson of anti routine discipline for criminal investigators.

One second.

Three seconds.

Yilin looked away.

"Dare not look into my eyes? Is there a ghost in my heart?" Gu Sinan's eyes lit up.

"No." Yilin shook his head.

"Then why don't you dare look into my eyes?" Gu Sinan took a step forward and approached Yilin.

Yilin was silent for a moment, then suddenly turned his head and asked the nearest young policeman, "are you afraid of her?"

"Be afraid, ah, no, no, no, not afraid, not afraid." The young policeman first subconsciously said what he thought, but immediately smiled and changed his way.

Gu Sinan: "

Xu Zhiyong: "

"Well, nothing. I'll check elsewhere first." Feeling that the atmosphere was not quite right, the young policeman who knew he was wrong wanted to smoke a few photons. He casually found a reason and slipped out.

"Oh." Yilin suddenly sighed, and then smiled helplessly: "OK, I'll tell the truth."

Gu Sinan was slightly stunned.

Even Xu Zhiyong, an experienced old criminal policeman, was stunned when he heard Yi Lin's tone.

Is the secret way out of sight?

"In fact, I'm not Xiao Yang's good friend at all." Yilin looked at Xiao Yang's body not far away: "isn't he who is much higher than me by virtue of his general attribute and has always asked me to run errands and do my homework? In the eyes of other students, I may be his good friend, but in fact, Xiao Yang didn't treat me as a friend at all. I know very well. How can ordinary people like us deserve to be friends with geniuses?"

The voice is a bit down and desolate, and a bit helpless to reality.

"Since you have a bad relationship with the dead, why did you come to him?"

Gu Sinan quickly thought that there was a doubt in the information provided by Xu Zhiyong.

Yilin was silent. He just took out a written history assignment from his schoolbag behind him and handed it to Gu Sinan.

"First of all, this is the order of the head teacher. Second... I have to return my homework to him." After a pause, Yilin smiled bitterly: "if I knew in advance that this kind of thing would happen... Even if I were killed, I wouldn't run in at this time."

Gu Sinan turned a few pages of neatly written history homework at random, silent and lost in thought.

At this time, another policeman came with a palm sized tablet computer in his hand.

"Gu Dui, the images stored by AI housekeeper have been downloaded."

"Good!"

Gu Sinan has no nonsense. He can directly view the image data recorded by the AI housekeeper.

Go home from Xiao Yang

Exercise

Then a girl came in halfway

Then something unspeakable happened

"Tut tut tut." Xu Zhiyong instantly showed an old driver's clear expression.

Gu Sinan glared at Xu Zhiyong, then poked his finger on the screen, fast forward, fast forward, finally skipped the lens that is not suitable for children and continued to look down.

Xiao Yang enters the gym

Until 22:18.

The image was abruptly interrupted.

"Gu Dui, I've just checked here. Since 22:18, the circuit in the community has failed, but now it seems that the murderer cut off the power supply, so it's... Gone."

"No backup power?"

"This AI housekeeper is only the home version. The home version AI housekeeper generally has no standby power supply." The young policeman explained helplessly.

……

When the image reappeared, the time was 23:49.

Xiao Yang has become a cold body.

In addition to Xiao Yang's body, there is no trace of the murderer in the room.

Gu Sinan continued to fast forward without expression, and saw the scene when Yilin came in and found the body.

"What about monitoring in the community?"

"I've asked people to pick it up as soon as possible, but I may have to go back to the bureau to study it slowly."

"Where's the forensics?"

Xu Zhiyong looked at the time: "we should arrive in 20 minutes."

"Ten minutes."

“……”