Police Detective

"Tan Bai, I thought you were just good at logic. I didn't expect you to be so professional in on-site investigation and physical and chemical analysis. You are a top student after all." After Sun Jie left, Suo Zhang called Bai Song aside, "Tell me quickly. Tell me about this banana water situation."

"I'm not sure yet. I need to see the autopsy results." Bai Song was still more cautious: "I'm still not familiar with you."

"Don't be afraid of making mistakes. Let's just assume it was banana water. I also watched the scene and felt that the deceased had been in there for so long. Who gave him the banana water and when?" Zhang Suo trusted Bai Song very much.

"There were no signs of struggle at the scene." Bai Song shook his head.

"So?" Zhang Suo touched his neck.

"Zhao Han, what do you think?" Bai Song asked.

"Ah?" Zhao Han was startled when Bai Song called out, and then said: "Based on the situation at the scene, I didn't go in to take a closer look, but they said there were no traces of a struggle, and the deceased tried many times to figure out that it should be him. Take the initiative to drink.”

"Drinking on your own initiative?" Zhang Suo glanced at Zhao Han, feeling like he was telling him not to talk nonsense.

Zhang Suo knew all the six people from Tianhua City in City A, but he didn't have a deep impression of Zhao Han. He always felt that this young man was dull and not very clever.

"Yes, I think so too." Bai Song acknowledged Zhao Han's words.

Zhao Han glanced at Bai Song and did not continue to speak, but there was a little joy on his face.

"Why did he take the initiative to drink poisonous water?" Suo Zhang immediately changed his attitude, "If you put it this way, how can this case be characterized?"

"I have generally looked at the situation at the scene. Many bottled liquids are not labeled, including banana water." Bai Song thought for a while: "Zhang Suo, you said, there is a saying that wine smells good when it is old. Why?"

"Um" Zhang Suo didn't expect Bai Song to ask this, and scratched his head, "Does it become purer after being kept for a long time?"

"Eh" Bai Song has a black line on his face. If this is the case, wouldn't alcohol be the most fragrant: "During the storage process, part of the ethanol is oxidized and becomes acetaldehyde. The acetaldehyde is further oxidized to form acetic acid, and the acetic acid further reacts with ethanol to form ethyl acetate. That is, ethyl acetate. Ethyl acetate has an aroma, and some blended wines will put some of it in it to smell fragrant. Of course, good wines not only produce ethyl acetate, but also other esters with higher molecular weights. Class, very fragrant. Banana water contains ethyl acetate, and things like benzene and xylene are called aromatic hydrocarbons because of their fragrant nature. The deceased was too thirsty and hungry, so he thought it was used for disinfection or It is not impossible to drink liquor on your own initiative.

Moreover, as far as I know, the taste of banana water is similar to that of liquor. "

"There is such a thing!" Zhang Suo said that he had never heard of it, "I have learned a lot about it."

"So the cause of death is that he accidentally took it?" Zhao Han interjected: "Then is this an accidental death?"

"This possibility cannot be ruled out." Bai Song said: "For example, the deceased was taking a bath here, and then suddenly received a message from a friend saying that his wife knew that he was here and wanted to come over to find him. In this case, the man would definitely run away. This may happen if you find a place to hide.”

"What?" Zhang Suo looked at Bai Song: "Inspector Bai is young and has rich experience."

"It's nothing." Bai Song smiled sheepishly.

"In this case, Team White, how can we determine whether it was an accidental death?" Zhao Han asked.

"If that's the case, you usually don't take your mobile phone with you. Moreover, even if you don't have your mobile phone with you and it is picked up by others, you will always have clothes when you come here to take a bath. This bathhouse will definitely lock the clothes when entering, right? Question Ask this house, check carefully now, is there any compartment that has been locked these days?"

"Let me ask." Zhang Suo nodded seriously.

If the clothes are all there, then what Bai Song said is possible. Whatever the reason, the deceased took a break and hid in the equipment room, and then something went wrong.

This check is quick. Because there are people staying overnight in this bathing place, the cabinets are not cleaned at night, so the situation Bai Song mentioned is likely to exist.

About twenty minutes later, the front desk, waiters, etc. checked the entire men's bathroom and found that this situation did not occur.

Because the business was temporarily closed today, and all the customers were taken away to make a simple record, the inventory was carried out very quickly.

"Has the women's bath been checked?" Bai Song asked.

As soon as Zhang Suo told Bai Song about the situation, he heard Bai Song ask, complaining: "How could he be in the women's bath?"

Looking at Bai Song's eyes, Zhang Suo had no choice but to pick up the phone: "Check the women's bath too."

"If you act like this, people think I'm a pervert." Zhang Suo sighed.

After another ten minutes, the message came back that there was no women's bath either.

"Then there is a problem." Bai Song said: "Everyone at the front desk has asked, but no one will remember this man when he comes in. There are hundreds of guests of all kinds every day, and the front desk doesn't even look at it. If a man comes in wearing only underwear, It will definitely be remembered, so someone must have taken his clothes.”

"So, we still have to open the case as a homicide case." Suo Zhang nodded: "That's not my business. I just know a few people who can help with a little help. It's better to station the district police station and the police for follow-up investigation. They do it in different bureaus.”

"Don't worry, let's take a look at the autopsy results later." Bai Song frowned for the first time.

In fact, many outsiders do not understand the daily experiences of police officers.

For example, Jiuhe District has a population of one million. If there are 5 homicides a year, how many abnormal deaths are there?

A conservative estimate would be three digits, or even two or three hundred.

In other words, many scenes are very likely to be accidents. After the police go there, if they can be 100% sure that it is an accident, death from illness, suicide, etc., then they will be handed over to the relevant departments for handling. As long as all reasonable doubt cannot be eliminated, the investigation will be conducted as a homicide until it is finally determined.

When Bai Song first started working, the person he encountered in the death case of Sun was the one who cheated the insurance company and committed suicide. The Shi who wrote "I have also been wandering for a long time. In the past ten years, I have lost all my deep gratitude and lost my life as a teacher and friend" and then jumped off the building, he also committed suicide. In addition, he also encountered a large number of other abnormal deaths, none of which were homicides.

Most of the abnormal deaths other than homicides are easy to detect, but there are also difficulties, such as this one.

Now, Bai Song has begun to lean towards the murder case, but the evidence is obviously not enough.

On-site investigation is a big problem. Although Bai Song trusts Sun Jie, he is always uneasy when Hua Dong is not around.

As a painter, Huadong is very careful and is expert in trace analysis.

Moreover, there is not even a camera here, and there is not even a camera facing the door. This actually poses a serious safety hazard. After this incident, the boss will be unlucky no matter what.

But now is not the time to think about this. Wang Liang and Wang Huadong are both drunk and cannot come over.

Liu Shuyuan's on-site investigation ability was also good, better than Bai Song's, but he also drank, and even Bai Song himself was more or less dizzy, which affected his judgment.

"Let's rest first. I don't know how long this autopsy will take." Zhang Suo said: "The case is not our case. When the station district office gets the files out tomorrow morning, we will take a look at what they have there."

"The dissection won't take that long." Bai Song was still a little drunk and had eaten a lot, so he couldn't sleep. He thought for a while: "He is our Brother Jie. He is that kind of... very special kind of fast person. "

Sure enough, soon, Bai Song received a call from Sun Jie.

"The physical and chemical tests have yielded some results, and the autopsy has made some progress. Let me tell you about the situation." Sun Jie knew that Bai Song was waiting, so he said what he wanted first.

Different information is different in the hands of different people.

"There was a little bloody fluid in the esophagus, a large amount of mucus in the trachea and bronchi, which was in a foamy state, and the left and right chests were congested. Pink edema fluid and red blood cells were seen in a large area of ​​alveoli, and the lung interstitium was extensive.

The superficial gastric mucosa is coagulated and degenerated, and some of it has

Ethyl acetate and xylene were detected in the stomach contents, as well as the carbon tetrachloride you mentioned, and acetone was detected in the urine."

"Did the deceased suffer from mechanical injury, mechanical asphyxia, poisoning by other poisons, anoxic asphyxia, drowning, other diseases, etc.?" Bai Song asked.

"None of them. His hand is a little injured. Considering the situation at the scene, he should have smashed the door." Sun Jie said.

"How long did the injury on your hand last?"

"The injury lasted no more than 12 hours. It was smashed during the day. It was found at the scene that the deceased had slept on the ground with something spread out. At least he went in yesterday." Sun Jie said.

"That means the deceased was familiar with this place. After entering yesterday or the day before yesterday, he knew that someone would come here and open the door every once in a while, so he was not too nervous at first. But today he couldn't stand it any more. He banged on the door desperately and finally became hungry and thirsty. Only after mixing it up can you drink this thing." Bai Song analyzed: "According to what you said, there is no doubt that you drank banana water."

"Yes, that's right. The report won't come out until tomorrow morning." Sun Jie said, "I'll take a look at it later and leave. I won't be here to perform the surgery anymore."

"Awesome, you've already become a surgeon?" Bai Song truly admired him.

Forensic doctors are actually the same as other doctors who perform surgeries. There are also forensic doctors who are the chief surgeons, and they are basically the most experienced ones.

"Who knows what Director Zhang told people here? People here thought I was an expert from the ministry. I had to bite the bullet, otherwise I would be kicked out if I missed it." Sun Jie has quite a lot of experience: "Fortunately, I did not disgrace my life."

"Okay, you should go to bed early after your work. I will take a closer look at this case." Bai Song hung up the phone and said to Zhang Suo: "Confirmed, it was just an overdose of banana water."

"It's so evil. I have been doing this for so many years and I have never seen such an evil method of killing." Zhang Suo scolded: "Is this the legendary self-destruction type? Bet on the probability? Bet that no one will do that in the past few days. Door, then the deceased must drink banana water?”

"Zhang Suo, you are the key to the problem." Bai Song nodded: "So, we must know two things now. The first thing is whether the cleaners go to the equipment room every three days. If not, Why did it take several days to pass this time? The second thing is that we need to find the boss and confirm where they bought this banana water from, and confirm whether the banana water we bought before also contains carbon tetrachloride."

"Do you only have some of the things you mentioned?" Zhang Suo asked.

"Yes, this is a very common substance. It is an organic solvent, a volatile liquid, with a slightly sweet smell like chloroform. It was once widely used. However, because it reacts with water above 500 degrees Celsius to produce toxic phosgene , chlorine and hydrogen chloride gas, which are very dangerous. Moreover, carbon tetrachloride itself is very harmful to the ozone layer, and its use is restricted internationally. Our country also restricts this thing. Banana water produced by regular manufacturers should It does not contain this thing. This is a sign of insufficient craftsmanship." Bai Song explained: "This physical and chemical property is very basic, and everyone will learn organic chemistry in college."

"You think I look like I've studied organic chemistry in college?" Zhang Suo was speechless, "Okay, I'll find someone to check according to your idea."

When encountering a case, I am never afraid of trouble, but I am most afraid of running out of ideas.

"It stands to reason that with so many people involved in this case, how come there is no progress at all?" Bai Song was a little confused.

"Detective Bai, our police force here is not what you imagined." Zhang Suo sighed: "Lancheng is pretty good, a provincial capital city, but there are still students from the Criminal University in your school. How many of them are willing to return to Gansu Province?"

"I don't agree with what you said, Suo Zhang. Let's not mention you first. Let's just talk about the criminal police officers I met at the scene and the few I met in the hospital. It can be seen from the contact that they are all professional. You can't belittle yourself. ."

"Um" Suo Zhang was humbled and a little puzzled when he was discovered: "Indeed, the feedback of clues is a bit slow. I'll call and ask. By the way, I'll take a look at what you said and ask someone to check it out."

Zhang Suo is also considered an outsider in this case, and Bai Song and others are outsiders, so Bai Song is worried that they may not have been shared with the intelligence. If this is the case, it will be very detrimental to the handling of the case.

Almost ten minutes later, Office Zhang received feedback that the case was indeed stuck.

Because the matter was too strange, the criminal police team had opened a homicide case for investigation. Three or four waves of people were sent to the scene to conduct on-site investigation, and surveillance cameras in a large area nearby were also checking.

"Didn't the station district police station take charge of this case at the beginning? Now the criminal police team is in charge?" Bai Song said: "It seems that it is indeed classified as a homicide."

"That's right." Zhang Suo said.

"The question is, what are the people from the police station doing?" Bai Song asked.

"Eh?" Zhang Suo suddenly reacted: "Damn, are they going behind my back to catch that fugitive?"

"Let's go and have a look at their office." Bai Song suddenly laughed: "I feel like this case is going in the wrong direction~"

(I have the illusion that I can add more updates tomorrow)