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

"I'm a third-year student at Qingcheng High School."

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

Gu Sinan snorted coldly: "Old Xu, let's talk about the point." ”

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

Gu Sinan nodded.

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

"The cause of death should be the knife in the neck, a knife killing, clean, there are no traces of a fight at the scene, it seems that the murderer should be a veteran, and it is very likely to be a ...... Occupational. Otherwise, with the attributes of the deceased and the premise of insisting on exercising, it is impossible to be killed by a knife without any reaction. ”

"There were no other finds at the scene, there was no trace of movement of the corpse, and the shape of the blood spray was not interrupted, so this should be the first scene."

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

Xu Zhiyong sighed lightly: "It can be said that it can be said that it is not." The deceased lived alone all the year round, his parents were not around, the door lock was just a three-level security algorithm, even if it was our people, with ordinary equipment, it only took 12 minutes to crack the code, if the murderer was prepared, this door lock was nothing for the murderer. ”

"Good!" Gu Sinan didn't say a word of nonsense, and directly commanded the scene: "Everyone, carefully search all the corners where the murderer may have left traces." ”

"Yes! Gu team! ”

"Lao Xu, who reported the case?"

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

Xu Zhiyong pointed to the corner of the room.

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

His unremarkable appearance makes it easy to ignore him.

The high school student's expression was a little cramped, and when he saw Gu Sinan looking at it, he was like a "frightened bird", and his body shrank into the crowd.

Gu Sinan, who had a keen intuition, interpreted the above information from a short face.

……

……

"Name?"

"Irin."

"Gender?"

"Sister, I don't seem to have grown to the point where it's hard to distinguish between male and female, right......"

"Less nonsense, ask what you say. Gender? Gu Sinan snorted coldly with a straight face.

"Male ......"

"Age."

“18。”

"You were the first to find a body? How do you have the code for the dead door lock? What is your relationship with the deceased? Gu Sinan's mouth was like a machine gun, and Tuk Tuk Tuk asked three questions in a row.

"This ......" Yi Rin was slightly stunned, then pointed to Xu Zhiyong with a helpless face next to him, and whispered: "This uncle has already asked these questions once just now." ”

The corners of Xu Zhiyong's eyes twitched, he couldn't stand it, and stopped Gu Sinan who was about to have a seizure: "Team Gu, I checked this student just now, he is a classmate of the deceased, and he had a good relationship with the deceased before his death, and in the eyes of his classmates, he can be regarded as an honest kind, his parents have been working abroad for a long time, and there is no problem with his identity." ”

After a pause, Xu Zhiyong handed the tablet to Gu Sinan, pointed to the content on it 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 come to find the deceased...... I have just confirmed with the deceased's teacher that there is indeed such a thing. Well, there is no doubt about it. ”

When Gu Sinan heard this, he sighed lightly, and then stared at Yi Rin with his eyes straight and was silent.

She knew very well what Xu Zhiyong's "doubts" were referring to.

In many classic murder cases, in order to exclude their own suspicion, the murderer will often go the opposite way and take the initiative to find the body and involve himself in the case.

If this tactic had been at the beginning of the last century, it might have worked.

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

Hmph, this is the first lesson of the anti-routine discipline of criminal investigators.

One second.

Three seconds.

Irin looked away.

"Don't dare to look me in the eye? Got a ghost in your heart? Gu Sinan's eyes lit up.

"Nope." Irin shook her head.

"Then why don't you dare look me in the eye?" Gu Sinan took a step forward and approached Yi Rin.

Irin was silent for a moment, then suddenly turned to the nearest young officer and asked, "Are you afraid of her?" ”

"I'm afraid, ah, no, no, no, I'm not afraid, I'm not afraid." The young police officer first subconsciously said what was in his heart, but immediately smiled and changed his words.

Gu Sinan: "......"

Xu Zhiyong: "......"

"Well, it's nothing, I'll go find out somewhere else first." Sensing that something was not quite right in the atmosphere, the young police officer, who knew that he had said the wrong thing, was eager to slap a few times, and casually found a reason to slip out.

"Huh." Yi Rin suddenly sighed, then smiled helplessly, "Okay, I'll be honest." ”

Gu Sinan was slightly stunned.

Even Xu Zhiyong, an experienced veteran criminal policeman, couldn't help but be stunned when he heard Yi Rin's tone change.

Could it be that the secret path has been lost by himself?

"I'm actually not Xiao Yang's good friend at all." Yi Rin looked at Xiao Yang's corpse not far away: "Isn't he just relying on his total attributes to be much higher than me, and has been letting me run errands and do homework, in the eyes of other classmates, I may be his good friend, but in fact, Xiao Yang doesn't treat me as a friend at all, I actually know it very well." How can a person like us with ordinary attributes be worthy of being friends with a genius? ”

The voice was a little depressed, desolate, and a little helpless about reality.

"Since you don't have a good relationship with the deceased, why did you come to him?"

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

Yi Rin was silent, just took out a written history homework from the schoolbag behind him and handed it to Gu Sinan.

"First of all, this is the class teacher's order. Secondly...... I'll have to give him my homework back. After a pause, Irin's wry smile: "If I knew in advance that it would appear...... This kind of thing, even if I were killed, I wouldn't run in at such a time. ”

When Gu Sinan heard this, he casually flipped through a few pages of neatly written historical homework, was silent, and fell into deep thought.

At this moment, another police officer walked up with a palm-sized tablet in his hand.

"Team Gu, the image stored by the AI butler has been downloaded."

"Good!"

Gu Sinan didn't talk nonsense, and directly checked the image data recorded by the AI housekeeper.

Returning home from Xiaoyang......

Exercise......

Then a girl came in the middle of the way......

Then something indescribable happened......

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

Gu Sinan glared at Xu Zhiyong fiercely, and then poked his fingers the screen, fast forward, fast forward, fast forward, and finally skipped the inappropriate shots for children, and continued to look down.

Xiao Yang enters the gym......

Until 22:18.

The image is abruptly interrupted.

"Team Gu, I just went to check here, and since 22:18, the circuit in the community has failed, but now it seems that the murderer should have cut off the power supply, so it will be ...... Nope. ”

"No backup power?"

"This AI butler is only a home version, and the home version of the AI butler generally does not have a backup power supply." The young police officer explained helplessly.

……

When the image reappeared, it was 23:49.

Xiao Yang has become a cold corpse.

In addition to Xiao Yang's corpse in the room, there are traces of the murderer.

Gu Sinan continued to fast-forward with an expressionless face, until he saw the scene when Yi Rin entered the door and found the corpse.

"What about surveillance 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."

"What about the medical examiner?"

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

"Give them another ten minutes, if they don't come in ten minutes, they won't use it again."

“……”