"The deceased Chen Pingfan, male, 17 years old, lived in Nanling Street, Beichuan Road, Lingang District, Xiyuan City, Tiandong Province..."

Not far away, the garden was littered with flowers and plants, and a man was lying inside. More precisely, a corpse.

Next to the corpse, the heavily armed forensic doctor was originally carefully examining, but now he interrupted the subordinate's words in a loud voice: "Team Xu, there are no obvious injuries on the surface of the deceased's body, but there are bruises on the back of the head and abdomen, and it is speculated that the cause of death is liver and intracranial hemorrhage caused by a strong impact." According to the precipitation of corpse spots, this should be the first crime scene. In addition, the liver temperature of the deceased was 20.39 degrees Celsius, and based on the temperature of the surrounding environment and the clothes worn by the deceased, it is estimated that the time of death was 12 o'clock last night, which is about half an hour different from the testimony of the students. ”

"Forensic Gu has worked hard, both of these should be right." The middle-aged officer's face softened slightly, and this was the answer he expected to hear.

He pointed to the flowers and vines scattered on the ground: "Based on the bending of the flowers and the degree of depression in the soil, it is predicted that the deceased jumped from the corridor on the fourth or fifth floor, where colleagues from the forensic team are collecting fingerprints and other clues." Although the floor is high, the ground is not hard, and there are flowers and plants to buffer, the deceased should have been seriously injured at that time, and there is a possibility of rescue. ”

As the old man of the criminal police detachment, the two have been to the scene hundreds of times together, and they have long understood each other.

"It's a pity that the students thought that someone had thrown a thermos into the garden again, so they didn't care, missed the time to call the police and treat the hospital, and waited until the morning to find out." The medical examiner stood up and motioned for two assistants to bag and seal the body.

"By the way," he added, "the blood-red handwriting on the fifth floor and in the stairwell on the rooftop..."

"It's still testing the ingredients, but it's certainly not paint." The middle-aged police officer said, "In addition, the forensic team is comparing the deceased's recent homework papers with blood-colored handwriting, and it is estimated that the results will be available later." ”

As he spoke, the cell phone in his trouser pocket rang.

"Yes, it's me, the handwriting comparison has already come out?" The middle-aged police officer's expression perked up, "Okay, okay, go upstairs with Forensic Doctor Gu immediately!" ”

"What's the situation, I'm going to go up too?" The forensic doctor was taking off his gloves and preparing to leave the scene, but he was stunned when he heard this, "Could it be that there are other corpses to be confirmed?" ”

"No, although we don't refuse to come to this thing, the less the better, isn't it?"

"That's not going, I'm very tired." The medical examiner turned around and left, "I didn't lie down until two o'clock this morning, and I was called to work after sleeping for less than five hours, and now of course I have to go back to make up for sleep." ”

"But they found something else in that hallway that might be decisive for the case, aren't you going to take a look?"

The medical examiner stopped suddenly.

The officer asked, "Can you sleep peacefully when you turn around?" ”

"If you don't speak, of course I can go home and sleep peacefully!"

The medical examiner turned, glared at him, and strode upstairs.

Officer Xu shook his head and followed suit.

For them, new evidence, especially conclusive evidence, is often fatally tempting.

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The duo ascended the staircase on the easternmost side of the building, where the morning sun shines through the windows, reflecting the carved handrails of white oak.

"It's like a long stretch of white silk..."When he reached the corner of the third floor, Officer Xu suddenly opened his mouth, and his eyes flickered as he looked at the escalator.

"Do you see anything, Team Xu?" Forensic Doctor Gu, who was walking in front, turned around, but trembled when he came into contact with that gloomy look.

"Nothing, let's go." Officer Xu shook his head, his expression returning to normal.

The two of them went up again, and arrived at their destination a minute later. It is a staircase between the fifth floor and the rooftop, and the boys' dormitory of Jiahang Experimental Middle School is five stories high, but there is a stairwell on the top floor that connects to the rooftop, and the door is closed on weekdays with a large copper lock, which will only be opened in special circumstances.

There were eight people at the scene, all dressed in solid-colored protective suits, rubber gloves and masks to prevent damage to possible evidence. They were divided into two groups, one gathered together with magnifying glasses in hand and carefully compared, occasionally whispering in the sound of deliberation, and the other holding a file and carefully scraping the wall ash with blood-colored handwriting on the wall.

The walls were still beige until six o'clock yesterday afternoon, except for some dust, there were only three or two cobwebs in the corners of the ceiling, which the cleaning staff had confirmed. But now there are blood-colored handprints and handwriting all over the walls.

There are only four big words over and over again - Han Dong harms me.

"Da Liu, what kind of decisive physical evidence is it?" After being also heavily armed outside the cordon, Officer Xu asked one of the people who was scraping the wall ash.

"Well, that's all three!" The man handed over the sealed bag in his hand, "Single-photo short-acting oral contraceptive pill Yasmin, Jieshibang zero-sense condom outer packaging, cigarette butts." It has been confirmed with the cleaning staff that the physical evidence also appeared here last night. ”

The physical evidence that only appeared last night is indeed extremely important and may be of great help to the case.

Gu Forensic Doctor perked up and took the sealed bag and looked at it carefully.

"It seems that there was not only a murder here last night, but also a 'vicious battle'!" Officer Xu said, "I just don't know if there is a connection between the two in time, maybe the parties involved in this 'vicious battle' have discovered something." ”

"DNA can indeed be extracted from the saliva on cigarette butts, but if the person concerned does not have any previous criminal record, we have to check the people who entered and exited the boys' dormitory building yesterday, which is a lot of work."

"The scope of the investigation can be narrowed." Officer Xu carefully took out the cigarette butt with tweezers, looked at it a few times, and then sniffed it on the tip of his nose, then nodded, "I have locked up several suspects, but I still need to obtain their DNA samples for comparison before we can finally confirm them." ”

"Just looking at the words on this wall, I thought it was just an ordinary suicide case of jumping off a building." "But now that this incident has happened, it seems that there may be other possibilities." ”

"Don't add personal speculation in advance, and start from the physical evidence and the situation at the scene, which is the first element of our criminal investigation." Officer Xu took out his mobile phone and called the subordinate who had reported to him just now, "Xiaoxin, take two people to visit various grades, mainly to interview school executives such as grade directors, teaching directors, and principals, and record where they were between seven and twelve o'clock last night, and whether there is any evidence and material evidence, to ensure that nothing is missing, and make a report and hand it to me as soon as possible." ”

"Why are you only interviewing school executives? Is it because of cigarette butts and condoms? When he put down his mobile phone, Gu Forensic Doctor was puzzled, "As far as I know, today's students are generally precocious, and there are many people who smoke in middle school." In addition, there are many people who can't resist the temptation of forbidden fruit when they are students..."

"Forensic Doctor Gu, I think you're sleepy. You can go back to sleep and think about it later, and if you can't think of it, you can go to the office in the afternoon. ”

Forensic Doctor Gu nodded, he was indeed very tired now, and his head was groggy.

At this moment, the loud bell rang again, and Officer Xu answered the phone, his face gradually becoming solemn.

"Forensic Doctor Gu, it seems that you can't leave. Another body was found in the girls' dormitory of Jiahang's experiment, and the estimated time of death was also from last night to this morning! ”