The laryngeal cap is a piece of cartilage, which is actually a leaf-like valve.

The trachea and esophagus lead to the same space, the pharynx, which extends from the nasal cavity and mouth to the larynx. To prevent food from entering the trachea, a leaf-like valve called the laryngeal cap reflexively covers the opening of the larynx as you swallow.

However, sometimes the laryngeal cap is not fast enough, and if you laugh while eating, the food may slip down and get stuck in your trachea, and you will choke.

After an autopsy, the forensic doctor Ren Qiushi determined that the cause of death of the deceased was suffocation caused by vomit entering the trachea. However, he noticed that the cover of the deceased's throat was somewhat red and swollen.

"Is it a lesion?" I asked immediately.

Ren Qiushi's negative voice came from the phone: "The redness and swelling of the laryngeal cover caused by the disease have been ruled out, and it seems to be ...... Seems to ......"

"What seems to be?" I asked, confused.

Although Ren Qiushi is usually in shape, he has always been serious and serious in his working state, and this time he is hesitant, which makes me feel very strange.

After a few seconds of silence on the phone, Ren Qiushi said: "It seems that something entered his mouth forcefully and hit his laryngeal cover hard, causing the laryngeal cap to be red and swollen." ”

No way......

This deep throat description, forgive me for wanting to be crooked......

"Ren Qiushi has made a new discovery?" After Li Meng saw me hang up the phone, he hurriedly asked me.

I didn't know how to answer her for a while, but if I had to say that there was something new, there was. But this new discovery is not critical, and it cannot be used to overturn the nature of the case of accidental death.

There's no way we can investigate a dead man's sexuality, and that's the end of the case.

"Let's go, wrap up." I pondered for a moment and beckoned everyone.

After forensic time, two investigations by the criminal police team, as well as one investigation by the serious crime team, did not find any clues that were enough to overturn the entire case.

Now the case can be closed, Du Tan did die unexpectedly.

It's been a waste of time.

In the office of the forensic department, Ren Qiushi has completed the autopsy work, temporarily frozen and embalmed the body, and when the case is really closed, the body can be handed over to the family to take away.

"Lao Qin, you're here." Ren Qiushi looked at me.

"Didn't you ask me to come?" I frowned and looked at him earnestly.

Ren Qiushi nodded, pulled out a chair for me to sit down, and said to me, "I want you to tell you about the autopsy." ”

"What about the autopsy? Didn't you already tell me everything? And we have not investigated any key clues, and this case has been characterized as accidental death. I looked at him with some bewilderment, I really couldn't figure out what clues he could tell by the redness and swelling of the throat cover.

Ren Qiushi paused and said to me, "The deceased's throat cover is red and swollen, which is caused by being hit by a hard object. Hitting the throat with a hard object can also cause discomfort to the deceased's throat and cause vomiting. If the deceased's posture was restricted, the vomit would indeed choke on the trachea, causing suffocation. ”

Hearing this, I asked him suspiciously: "So you think this is a means of killing, and this case is a homicide?" ”

Ren Qiushi thought for a moment, shook his head and said to me: "I'm just giving a possible situation based on the autopsy, after all, I'm just a forensic doctor." ”

His words did give me some new ideas, this way of killing is also novel enough, in homicide cases, there is indeed this possibility, in previous cases, the murderer faked the murder scene as suicide or accidental death, there are also very many.

"So you still think it's a homicide?" I made up my mind and asked him seriously.

Ren Qiushi still gave me an ambiguous answer: "I didn't find any injuries on the deceased's body, but I just felt that the red and swollen throat cover should have some connection with the cause of the deceased's death." ”

I thought about it for a while, and continued along Ren Qiushi's train of thought: "If this is really a homicide, then the hard object entering the mouth of the deceased and the suffocation of the deceased's vomit entering the trachea should occur at the same time. ”

Ren Qiushi immediately answered: "Then there are two possibilities. ”

My eyes widened suddenly, and I looked at him earnestly.

I also thought of the two possibilities he said.

The first type: The murderer followed Du Tan into his home and stuffed him with a hard object in the room, causing him to feel uncomfortable in his throat, so that he vomited and suffocated.

Chapter 2: The murderer still used a hard object to cause him to vomit and suffocate, but the scene of the crime was not in his home, but after his death, he moved the body to the sofa in the living room, faking the scene of accidental death.

Either way, the killer would have entered his room, but we didn't find any fingerprints or footprints in his room other than the deceased.

Could it be that the murderer carefully cleaned up after the killing?

Thinking about it this way, the murderer still went through a precise plan, and this is a long-planned homicide.

It's just that all this is our speculation, there is no actual evidence, and the murder weapon that caused him to vomit and choke has not been found.

As a criminal policeman, you can't let go of any suspicions.

And it's a doubt that can't be explained.

"Did you find male DNA in the throat of the deceased, which is prostate fluid or semen or anything like that?" I paused, and suddenly asked him.

"I understand what you think, no matter what the deceased's sexual orientation was, at least I didn't find a second person's DNA in him." Ren Qiushi said seriously.

I stood up, nodded, and took a deep breath: "I understand, it seems that this case is not over yet. ”

Returning to the office of the Serious Crime Team, Lin Zifan was using the computer to enter the case closure report.

"Team Qin, do you see that my closing report is written like this?" When Lin Zifan saw me enter the door, he hurriedly greeted me.

I walked over to his desk, propped my hands on it, and leaned over to stare at the closing report on my computer screen.

The content is the same as we thought, nothing more than to explain some of the causes of death, and now that there is an autopsy report to corroborate, the case seems to have been characterized as an accidental death.

"Is that okay?" Lin Zifan looked up and asked me.

I didn't speak, just shook my head.

"Can't you write that?" Lin Zifan was a little puzzled.

I still shook my head.

"Team Qin? So how do I write that? Lin Zifan asked me directly.

I stood up, pondered for a while, and said slowly, "I can't close the case yet. ”

"What? Can't close the case?! ”

After hearing my words, everyone in the office of the Serious Crime Team was surprised in unison.

I nodded, "We're going back to the scene of the crime." ”