novelraw Chapter 134: Doubtful
Chapter 134: Doubtful
Fast forward the video.
Look at the fishing line again. The fishing line used by the murderer was taken out directly from the drawer of the TV cabinet in the living room.
The scissors used by the murderer were also taken out of the coffee table drawer.
This shows that on the one hand, the murderer knows Zhao Mingwei's family very well, and the possibility of the acquaintance committing the crime is very high.
The first group focuses on investigating the whereabouts of Zhao Mingwei's relatives, especially Zhao Dezhi's adopted son, Zhao Danyang!
Yes, from the information, Zhao Dezhi has an adopted son in his family.
Zhao Danyang.
His current whereabouts are unknown and he is suspected of committing a major crime.
The second group, focus on checking the packaging bags found in the trash can in Zhao's kitchen.
The packaging bag was discarded by the murderer.
It turned out that it contained the wax-sealed steaks and other items brought by the murderer.
From the perspective of the video, the murderer fixed the mobile phone on the forehead at that time, and broadcast the whole process live from the first perspective.
However, the mobile phone and WeChat account used for the live broadcast belonged to Zhao Mingwei himself.
The font printed on the packaging bag comes from a supermarket called I Love My Home. The second group will try their best to track down the steak sales records of this supermarket.
The third group, check the clothes on the body of the deceased.
The clothes of the four victims fit very well. Judging from the live video, the murderer took them out of the bags he brought.
The four garments were of very good material, neatly ironed and clearly put together with care.
Although the brand labels on the clothes have been removed by the murderer, judging from the fabric and tailoring, they are definitely brand-name clothes.
The third group should focus on investigating the source of the deceased's clothing, and strive to find out who bought it and where it was purchased.
In addition, collect information on 32 people who watched the live broadcast.
The fourth group focuses on checking the knives and forks in Ding Suxi's hands.
Click!
The photo is cast again.
and gradually enlarged.
The knife and fork in Ding Suxi's hand is not an ordinary western food knife and fork. Pay attention to the position of the handle of the knife and fork, which is printed with a special rose pattern.
Ordinary inferior knives and forks will not have such clear printed steel patterns.
The rose pattern is either a brand of knives and forks, or a unique logo of a certain western restaurant.
I want you to find out the source of this knife and fork in the shortest possible time.
At the same time, pay attention to the autopsy report of the four corpses.
The fifth group, check all the videos near Zhao Mingwei's home, and try to find out suspicious people.
The house where the four of Zhao Mingwei died belonged to Zhao Dezhi.
Zhao Mingwei and Ding Suxi don't usually live here.
According to the information already found in Hulu City, Zhao Mingwei lived in the next-door community.
Ding Suxi lives with her parents.
He did not live with Zhao Mingwei.
Judging from the situation at the scene, in the afternoon, there should be four people having a dinner together, resulting in carbon monoxide poisoning.
After the general work arrangement was completed, only Qin Chuan and Chen Yan were left.
Who is Qin Chuan? He's an old detective.
Seeing Chen Yan's expression, he knew that Chen Yan still had work to do.
Chen Yan, do you still have any doubts?
Chen Yan nodded: There is one more doubt.
It's the cause of death of these four people.
cause of death?
You mean... why carbon monoxide poisoning?
Chen Yan nodded.
It's really refreshing to talk about the case with this old detective.
As soon as Chen Yan said it, Qin Chuan knew what Chen Yan wanted to express.
Captain Qin, the house Zhao Dezhi lives in is an old community, but how many years has it been since carbon monoxide poisoning happened?
Qin Chuan nodded.
In recent years, cases of carbon monoxide poisoning have been rare.
In the past, due to economic constraints, some residents used charcoal or coal for heating.
Especially in winter, the possibility of carbon monoxide poisoning is high and the probability is higher.
However, now, especially in residential buildings in urban areas, central heating is used in winter, and there is basically no possibility of carbon monoxide poisoning.
Not to mention, it's summer, August.
The weather in Hulu City is the hottest time of the year.
Where did the carbon monoxide come from?
Chen Yan checked Zhao Dezhi's home.
There are only two ways or possibilities that can produce carbon monoxide.
Natural gas stove and natural gas water heater.
Many people may have misconceptions about carbon monoxide poisoning.
It is believed that the human body has inhaled too much natural gas or liquefied petroleum gas, which is carbon monoxide poisoning.
In fact, this is not the case.
Whether it is natural gas or liquefied petroleum gas, its main components are hydrocarbons and alkanes, which are flammable gases.
After the human body inhales these gases, it does not produce symptoms of carbon monoxide poisoning.
Moreover, its fatality is far less serious than carbon monoxide poisoning.
Carbon monoxide poisoning can only be treated effectively in a hyperbaric oxygen chamber if it is detected early.
After other hydrocarbons and alkanes are inhaled into the human body, as long as you go to a well-ventilated place and breathe more fresh air, there will be no serious problems.
Moreover, in order to prevent natural gas or liquefied petroleum gas from being accidentally inhaled by people, manufacturers will add irritating gases to the gas.
This is why the domestic natural gas and liquefied petroleum gas we use have a smell.
Carbon monoxide is produced after the incomplete combustion of these hydrocarbons and alkanes.
The combustion is complete, and the gas produced is carbon dioxide.
Generally speaking, when a natural gas stove burns, the flame is blue.
I experimented with the stove in Zhao's kitchen. The ignition is normal, and the flame is blue. There is basically no possibility of insufficient combustion.
Therefore, the possibility of carbon monoxide produced by the stove is relatively small.
The thing most likely to produce the same amount of carbon monoxide is the water heater!
Natural gas water heaters are different from stovetops.
In order to heat the water as soon as possible, after the natural gas water heater is ignited, the natural gas output is large.
And because the space in the water heater is narrow and the air circulation is not smooth, so it is difficult to fully burn.
That's why natural gas water heaters have a dedicated flue for exhaust.
However, the normal exhaust force of a qualified natural gas water heater exhaust port is relatively large.
Chen Yan has already tried it.
Zhao's natural gas water heater exhausts normally.
Turning on the hot water in the kitchen sink, Chen Yan went outside the building to observe.
Zhao's house is on the first floor, so it's very convenient to check.
The smoke extraction system is normal and there is no problem.
The smoke exhaust system generally has a protective cover.
After the protective cover is removed, it is a one-way opening and closing port.
It's just a piece of iron.
There are springs to tighten.
When the gas inside is discharged, under the push of the gas pressure, the iron piece bounces up, and the gas is discharged.
When the water heater is not working, the iron sheet returns to its original position under the pressure of the spring to seal the pipe.
The role of this iron sheet is mainly to prevent the external cold air from pouring back in winter.
So, how exactly is carbon monoxide produced?
Could it be that the murderer brought it in and made each victim breathe again?
This possibility...
In addition, there is Zhao Danyang, the adopted son of the Zhao family.
When the murderer arranged the corpse dolls, he made no secret of his familiarity with the Zhao family.
Why?
Was it accidentally exposed?
Give me a break.
Judging from the position where the murderer hangs the fishing line, the other party must have practiced it.
The whole process was smooth and smooth, and there was no rework at all. It must have been very meticulous planning for the layout of the entire corpse doll.
Considering that Ding Suxi and Zhao Dezhi are left-handed reproductions.
The murderer's mind is delicate, beyond ordinary people.
And such a person, at the scene of the crime, will leave obvious flaws?
impossible!
The whole process of committing the crime took up to 5 hours.
The murderer was very cautious during the fabrication process.
All that was exposed was a pair of rubber gloves.
Not a bit of skin was exposed.
Even if it was a glove, Chen Yan found out that the other party should be wearing rubber gloves and cotton gloves.
As a result, the contours of the opponent's hands are shown in the video very inaccurately.
It can be said that the murderer has done very meticulous work in any link that may reveal his identity.
How could such a careful and prudent person expose obvious flaws.
If there is, Chen Yan also believes that the other party is more likely to mislead.
After all, when the murderer started the live broadcast, the four victims had already died.
The murderer surveyed the scene first, and it is possible to find the location of the fishing line and scissors in advance.
It's just that during the live broadcast, the murderer showed it on purpose.
Besides, there was another detail that caught Chen Yan's attention!