The equipment and instruments of the 40th bureau were far more advanced and complete than those of the previous police station, and I put on gloves and performed a complete and detailed autopsy on the four deceased, and when I came out it was already early in the morning, and when I went out to change clothes, I found that the rest of the people had not left.

Yun Duruo handed me a glass of water, and the others did not speak, waiting for my autopsy results, I took the water and took a sip, and sat on the chair a little tiredly, shaking my head while touching the cigarette.

No fatal wounds were found on the bodies of the four deceased, not even minor external injuries, there was nothing else in the stomach except for the food they had eaten that night, and after testing, the food that had been digested by gastric juice did not contain any drug in it, so it can be inferred that the four deceased were not drugged, that is, the thinking of the four deceased before death was completely clear.

No bruises were found, the cause of death of the four deceased was the compression of the neck blood vessels by the rope, the lack of oxygen supply to the brain, and I found a lot of injuries on their necks caused by the friction of the rope, which should have been caused by the pain of the weight pulling the cervical spine and making the four deceased struggle.

However, due to the severe compression of the carotid artery, the brain lost complete control of the body after the lack of oxygen, and the hands could not be lifted, so I found a large amount of black and blue blood deposits at the ends of the limbs of the four deceased.

At the same time, I rechecked the time of death according to the degree of digestion of the food and the time when the corpse spots formed, and once again determined that the time of death of the four deceased was definitely two o'clock in the morning, and from the autopsy results, I was sure that the four deceased committed suicide!

There is nothing surprising about this result, judging from the situation at the scene of the crime, Yun Duruo deduced early on from her criminal investigation experience that it should be suicide, the reason is very simple, if it is a deliberate homicide, it is necessary to kill four girls at the same time, and in such a bizarre and weird way, if the four girls are coerced and unable to resist in a sober situation, they will instinctively call for help, it was two o'clock in the morning, and the girls' hospital was very quiet, and the cry for help would definitely arouse the alarm of the dormitory classmates next to them.

What's more, if you want to hang the four girls on the ceiling fan while they are conscious, the deceased will inevitably struggle to resist, but when the bodies were found in the 403 dormitory, the four deceased were dressed very neatly, their hair was not messy, and even the slippers were neatly placed underneath, and it would definitely not be the scene of the murder.

I looked at the prince and Han Yu, they have always insisted that the four dead in the 403 dormitory are too resentful, and it should never be a grudge left by people who are misanthropic and supreme after death, theoretically I support Yun Duruo even more, after all, everything in the investigation of the case must be based on facts.

I lit my cigarette, took a deep breath, and asked the prince and Han Yu.

"The autopsy results are also out, do you have anything else to add?"

The prince silently looked at the files and case materials in front of him, this was handed over by Wen Jinnan, a large number of photos were taken from the scene, the prince casually pushed a photo in front of me, and said calmly with a rosary in his hand.

"Look at this picture."

The photo is the 403 dormitory, the four deceased are still hanging on the ceiling fan, this should be the first photo of the crime scene, I took the photo and looked at it for a long time, and other people also came around, we have repeatedly investigated the crime scene before, and we have not seen any clues from the photos.

"What did you find?" I asked the prince blankly.

The prince's fingers fell on a bed, this should be Nie Bingwan's bed, a white coat was placed on it, and then the prince handed over the magnifying glass, I took it and looked at it carefully for a while, and found a red stain similar to blood on the sleeve of the white coat on the bed.

"I also noticed this white coat at the time, and later I arranged for someone from the forensic department to have this dress appraised." Nangong Yi said with one hand propped up on the back of my chair. "Blood stains were indeed found on the clothes, and it was human blood, but I checked Nie Bingwan's class that day, and the last class of the four of them was ** dissection, and then I sent someone to take blood from the autopsy corpse and compare it with the blood stains on Nie Bingwan's clothes, and it was confirmed that it belonged to the dissected corpse, and it should have been accidentally stained during class."

The prince has always been calm and quiet, and he will never bother with ambiguity, and he must have other intentions in asking me to show this photo.

Han Yu took the photo from in front of me, and after looking at it alone for a long time, the corners of his mouth slowly curled, and when he came to me, he pointed to another place in the photo and said with a smile.

"He's just letting you see here."

The prince glanced at it and smiled without saying a word, presumably Han Yu was right, my eyes followed the direction of Han Yu's finger, it was the southeast corner of the 403 dormitory against the wall, there were three plastic basins placed in that position, and the white coats were stacked in the basins.

I suddenly understood the prince's intention to let me see this photo, and I rubbed my forehead and muttered to myself.

"That's a little weird."

"In the end...... What exactly did you find? Nangong Yi looked at the three of us with strange expressions and asked curiously.

"It's clothes! Nie Bingwan didn't wash the white coat, while the other three soaked the white coat in a basin. "Yun Duruo is good at reasoning, how could she not understand the meaning.

When we went to the 403 dormitory, we found that the dormitory was clean and organized, even the sundries were stacked neatly, which showed that the four girls loved to be tidy, and there was no wrinkle on the beds of the four of them, and the quilts were folded neatly.

Since these four girls love cleanliness so much, the last class is an anatomy class, and it is also ** anatomy, the four of them wear white coats to class, and after returning to the dormitory, three of the girls changed their white coats, but only Nie Bingwan threw them on the bed casually.

"People who study medicine are somewhat clean, not to mention that these four deceased also paid attention to the cleanliness of the room before their deaths, Nie Bingwan's white coat was stained with blood stains left during the autopsy, and the location is obvious that she can't see it, and people like them who love cleanliness will never throw clothes stained with corpse blood on the bed." Yun Duruo clasped his hands and said in surprise.

"But the other three deceased did it normally, and when they came back, they changed their clothes." Nangong Yi nodded thoughtfully, her eyes fell on the white coat on the bed, and she suddenly said with some doubts. "That's not normal, it's Nie Bingwan......"

"The key is not this, according to your evidence, these four people committed suicide, but the real misanthropic people are those who see through everything, Buddhism says that seeing through the red dust and escaping into the empty door is to cut off everything, and suicide is to give up even life, so what else can't be let go." The rosary in the prince's hand stopped and said calmly. "Since the four of them are bent on death, it doesn't matter whether they change their clothes or not, even if they want to wear a set of clean clothes and lose their lives, why bother with the dirty clothes they change."

"What the prince said makes sense, since you want to commit suicide, why bother to soak clothes, this is not an extra move, this is completely inconsistent with common sense and the mentality of a person who wants to commit suicide." I nodded, took a puff on my cigarette and said. "Soaking the clothes means that they still want to wait for time to wash them, which means that they don't want to kill themselves, at least they don't want to kill themselves that night......

"That is to say, something must have happened that night, and the sudden change made these four people have the idea of committing suicide, and finally took action." Han Yu said.

I slowly exhaled smoke and thought for a long time, I have been engaged in forensic medicine for so many years, and I still have some knowledge and understanding of suicide, which is an act that requires the deliberate or voluntary use of various means to end one's life under the influence of complex psychological activities.

People who want to commit suicide may experience extreme frustration, shame, or guilt in the days, weeks, or months before committing suicide, feelings of hopelessness and hopelessness, mood swings, and change from frustration or depression to unusually calm and happy.

These are not short-term behaviors, and it is impossible that something can be generated by a sudden stimulus, so Han Yu's statement that something happened that night caused the four deceased to commit collective suicide is not valid.

And I think back to the surveillance I watched before, the four deceased were all happy and laughing before returning to the dormitory, such a mental state is definitely not what a person who wants to commit suicide should have.

Yes......

It's Nie Bingwan, she is the only one who is different from the other three, I remember that she has been lagging behind in the surveillance, giving people the feeling that she is in a trance, she should be thinking about something.

After she returned to the dormitory, she threw the bloodstained white coat on the bed casually, such an abnormal behavior was in stark contrast to the other three, if any of these four people really had suicidal tendencies, it should only be Nie Bingwan.

But why did the other three hang themselves on a ceiling fan?

A knock on the door outside interrupted my train of thought, the police officer who came in sent new information, I saw Ling Guodong standing outside, the armed forces at the door warned him that he couldn't go in, he waved to me, I snuffed out the cigarette in my hand and walked out quickly.

"What the hell is this place, so heavily guarded?" Ling Guodong pulled me aside and asked in a low voice. #~

I handed over a cigarette and smiled without saying a word, my expression apologetic.

"I understand, you don't say it's inconvenient, and I don't want to know, it's not that Jiang Ju asked to send it." Ling Guodong didn't care, took the cigarette and looked around and whispered in my ear. "This is just handed over some things found from the 403 dormitory during the investigation of the scene, we found a mobile phone at the scene of the crime, this case is very evil, you better take a look."

"Cell phone?" I asked, with a frown. "What's inside?"

"See for yourself, I don't want to say it, it's the first time I've seen such a creepy scene in so many years."

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