According to Shen Baijun's recollections, Liu Yuzhou drank a lot of wine that night, and after getting drunk, he actually wanted to have fun and did something to the female companion next to him, and then Liu Yuzhou and the female companion quarreled, and finally Liu Yuzhou drank a glass of wine and left angrily, and broke up unhappily.

However, Shen Baijun was not by Liu Yuzhou's side at that time, and he didn't know much about the specific content of the matter, but he was not far from ten.

"When Liu Yuzhou left, what time was it?" I asked Shen Baijun.

Shen Baijun recalled a little and said softly: "At that time, the pool party was nearing the end, and I can't remember exactly what time it was, it should be one or two o'clock in the second half of the night." ”

"Who is the female companion who quarreled with Liu Yuzhou?" I asked.

Shen Baijun shook his head and replied slightly apologetically: "I'm sorry, there are many people in the party that I don't know, and I wasn't there when they quarreled, so I don't know much about the specific situation." ”

I nodded, and suddenly the conversation changed and asked her with concern: "Have you always lived here alone since you returned to China?" ”

"Yes." She said with a smile.

"Why don't you go home?" I looked at her and asked lightly.

After listening to me ask this question, Shen Baijun's face changed slightly, she was still smiling just now, but suddenly became very lonely, she lowered her head a little sadly, pursed her lips and was silent for a long time before she slowly spoke: "My parents have passed away." ”

"I'm sorry." I bowed slightly and apologized.

Shen Baijun eased his nerves and smiled at me: "It's okay, my parents have passed away for many years, even if you don't want to face it, there is no way." ”

After a few more brief conversations, we got up and left.

Leaving Shen Baijun's room, Li Meng and I walked slowly out of the door of the hotel.

During this period, I have been pondering what happened to Liu Yuzhou at the pool party, and what I found from Shen Baijun is that Liu Yuzhou left the party at about two o'clock and died on the way home, and the time and place are consistent with the clues currently in this case.

Liu Yuzhou drank a lot of wine at the pool party, and wanted to have fun after drinking, which annoyed the female companion around him, and after drinking a glass of wine, he broke up unhappily. Shen Baijun didn't know Liu Yuzhou, and after our investigation of Liu Yuzhou's identity, Liu Yuzhou was the owner of a studio, and although he had a little money in his hand, no matter which direction he thought about, he would never know this returnee doctor of psychological counseling.

Judging from the results of the autopsy, Liu Yuzhou's body contained a large amount of alcohol, and the dose of cephalosporin antibiotics was also very high, and the combination with alcohol reached a lethal dose.

The time of disulfiram-like reactions is very fast, and once the dose is reached, the onset time can even be less than five minutes. And Liu Yuzhou's death was about ten minutes after leaving the party, such a short time, the time to take the medicine will not be very long, it is very likely that he ingested cephalosporin antibiotics when he just left the party.

Could it be that the female companion with whom he had an argument had added cephalosporin antibiotics to the last glass of wine he drank before leaving? As a result, Liu Yuzhou had a disulfiram-like reaction on the way back?

But who would carry cephalosporin with them at a party? After all, cephalosporin and alcohol together are deadly things, and cephalosporin is an antibiotic that only patients can take.

Besides, it's a pool party, how can you carry medicine with you in a swimsuit? And it is necessary to drug Liu Yuzhou when he leaves, which is impossible regardless of timing and motive.

If this is not an excesse, is it intentional homicide?

But at a party, how to poison accurately?

Everyone drinks and has fun, how to ensure that the wine that is added to the cephalosporin antibiotic drug will definitely be drunk by Liu Yuzhou? And it is necessary to ensure that Liu Yuzhou will not have a seizure until he leaves, if Liu Yuzhou dies at the party scene, the murderer will be directly exposed.

Could it be manslaughter?

It is also unlikely, Liu Yuzhou's family strongly requested an autopsy, which shows that they are worried about something.

Liu Yuzhou must have been threatened with his life before, which is why his family feared that he would be killed. In this way, it is very likely that this was a planned murder, and the murderer can be easily found as long as Liu Yuzhou's social connections are investigated and the family is cooperating with the investigation.

"Still thinking about that returnee doctor?" Li Meng stood beside me and glanced at me with contempt.

"That's for sure, Liu Yuzhou died on the way home from a party she held, I must think about it, I always feel that there is something important missing, I should have had a good chat with her just now." I said lightly.

I knew that Li Meng's "thinking" meant things for men and women, so I secretly changed the concept and deliberately pretended not to understand.

In matters between men and women, we must not underestimate a woman's keen observation and judgment, I bet she may not remember what we investigated just now, but she must have seen that my eyes have been falling on Shen Baijun.

At this time, no matter how I explain it, she won't believe it, and if a woman believes in something, she will never change it easily. If you explain it, it will only get darker and darker, and it will be considered to be trying to cover up, which is why you should not try to reason with women. I just changed the concept and changed the subject.

But Li Meng didn't seem to want to let go of this topic, and said to me with a smile: "Maybe I shouldn't have come to investigate with you today, you will definitely be able to ask more content in your hotel room alone." ”

Since she insisted on continuing to talk about this topic, I continued with her topic, and teased her by the way: "What can't be just guesswork, how do you know that if I ask her alone, I will definitely be able to ask more?" It's like the two of us just walked out of the hotel, a man and a woman in and out of the hotel, did something just happen? ”

Li Meng was a little out of words by my stinky and shameless attitude and unreasonable sophistry, and for her, when she couldn't say it, she would do it directly.

With that, she kicked me in the shin.

Her strength this time was obviously not as heavy as before, but I still pretended to be in pain and shouted, sat on the ground and said aggrievedly: "It's also a returnee, why is the gap so big?" One is knowledgeable, the other is arrogant and unreasonable! ”

Li Meng crossed his waist and looked down at me and sneered: "As a returnee criminal psychology scholar, I want to advise you, don't be fooled by a person's appearance, beautiful women are the most dangerous." ”

She's right, I agree, but that's not a reason for her to kick me.

I sat on the floor for a while, and seeing that she didn't have the slightest intention of pulling me up, I had to stand up on my own and awkwardly slap the dust off my body.

"Beautiful women are the most dangerous, so are you dangerous?" I smirked.

Li Meng ignored me and gave me a fierce look.