In the serious crime team, Ma Jun called the entire team to listen to He Jiahui analyze the case.

He Jiahui stood in front of the whiteboard and talked eloquently: "The forensic side has determined through tests that the vegetable soup residue found on the floor of the restaurant D on the 13th floor has the same composition as the oil stains on the soles of the deceased's shoes.

The shoe prints found on the balcony guardrail of D on the 13th floor also match the shoes of the deceased, so it is now certain that the deceased did not jump from D on the 12th floor where he lived, but on D on the 13th floor.

Down!

I think everyone must have a question. The deceased clearly lived on D on the 12th floor. Why did he go to D on the 13th floor and jump off the building? The answer is actually very simple. The deceased regarded D on the 13th floor as his home!"

He Jiahui said, took out a few photos, pasted them on the whiteboard, and then said: "These photos were taken by the forensics department on the twelfth floor, D, which is the home of the deceased.

I took these photos and went to the movers who moved D on the 13th floor to confirm, but they said these were photos of the residents of D on the 13th floor. And I also observed the decoration of D on the 13th floor, and D on the 12th floor.

Exactly the same.

So when the deceased entered D on the 13th floor and saw the same decoration, the same furniture, and the same layout as his own home, he naturally regarded it as his own home.

No one would make the decoration, furniture and furnishings in their own home exactly the same as other people’s homes. It is obvious that someone deliberately built D on the 13th floor to look like D on the 12th floor.”

"Why did the tenant on the 13th floor do this?" Yang Zai asked immediately.

"Of course it's to kill the deceased!" He Jiahui paused and then said: "I think the various supernatural events that the deceased encountered during his lifetime should have been arranged in advance by the tenants of D on the 13th floor.

For example, blood comes out of the water pipes, the TV turns on automatically, and the bed vibrates constantly. They should all appear in room D on the 13th floor, and are caused by the tenants on d on the 13th floor.

After the deceased encountered these supernatural events, he immediately went down to find the security guard. The security guard went back with the deceased to D, the 12th floor, where the deceased lived. The water pipes there were normal, the TV was normal, and the bed was also normal.

Therefore, when the security guards went to check and found that everything was normal, they would think that the deceased was hallucinating, and the deceased would become more and more suspicious that he had encountered something dirty or was haunted by ghosts.

In addition, the deceased had taken hallucinogens, which made him more likely to have hallucinations and artificial mischief. Coupled with the effects of the drugs, the deceased eventually developed mental problems, and then committed suicide by jumping off the building.

After the deceased jumped to his death, the murderer was worried that it would be revealed that D on the 13th floor was the real crime scene, so he immediately hired a moving company to move all the furniture on D on the 13th floor."

"Sir He, according to what you said, the tenant couple on the thirteenth floor should be the murderers!" Uncle Hua asked.

"They are probably not lovers, but just partners, a temporary partnership formed to kill the deceased. I remember the security guard once said that the two of them were not close," He Jiahui said.

Uncle Hua then asked: "Sir, there is a flaw in your analysis. The deceased clearly lived on the twelfth floor, how could he go to the thirteenth floor? Even if he took hallucinogens and had mental problems, he still had mental problems.

You can’t tell the difference between buttons 12 and 13 in the elevator, right?”

He Jiahui smiled slightly and said, "What if the deceased pressed the button for the 12th floor, but the elevator stopped at the 13th floor?

Most people would think that the elevator would stop at the floor they pressed, and then walk out of the elevator directly. The same was true for the deceased. When he walked out of the elevator, he did not realize that he was actually on the thirteenth floor.

He will go directly to Building D, enter the password, open the door, and then see the scene exactly like his own home, and he will naturally think that this is his home."

"I remember when the locksmith used the unlocker to open the combination lock, the passwords for D on the 12th floor and D on the 13th floor seemed to be different, right?" Uncle Hua continued.

"The password can be changed. D on the 13th floor can move all the furniture. Changing the password is not a normal operation." He Jiahui continued:

"I believe that the previous password on D on the 13th floor was the same as that on D on the 12th floor. After the deceased fell to his death, the tenants on D on the 13th floor also changed their password when they moved."

"But if the deceased pressed the button for the 12th floor, why did the elevator stop at the 13th floor?" Uncle Hua asked again.

"Of course someone tampered with it." He Jiahui paused and then said: "The murderer was not only the couple who rented D on the 13th floor, but also the property manager in charge of the elevator!

Whenever the deceased went home, although the deceased pressed the button for the twelfth floor, the elevator administrator could control the elevator, send the deceased to the thirteenth floor, and guide the deceased to the thirteenth floor d."

"That means there are three murderers in this case!" Uncle Hua nodded suddenly, and then asked: "When will we arrest them?"

"Don't worry, there is still evidence that has not been shown." He Jiahui pointed to a computer next to him and continued: "I have transferred the surveillance video of the elevator and showed it to you."

As He Jiahui spoke, he came to the computer and played a video. In the video, a man walked into the elevator. It was the deceased Wang Hai. After he pressed the twelfth floor button, the elevator went up all the way, and then the elevator stopped. Wang Hai

Also walked out.

"Have you recorded the time he took the elevator?" He Jiahui asked.

"Remember it." Everyone said one after another.

He Jiahui clicked on another video. The same deceased Wang Hai walked into the elevator and pressed the button for the twelfth floor. The elevator rose all the way up, then stopped, and Wang Hai walked out.

"Have you written down the running time of the elevator this time?" He Jiahui asked again.

"One second slower than the first time!" Yang Zai said first.

"Yes, after accurate measurement, the difference in the running time of the two elevators was 1.3 seconds. If the deceased went to the same floor, it should have taken the same time. How could there be a 1.3 second difference!"

He Jiahui continued: "In 1.3 seconds, the elevator can go up one more floor, and there are more than one similar surveillance video. In other words, someone deliberately manipulated the elevator to send the deceased to the thirteenth floor."

Before, it could only be regarded as He Jiahui's reasoning, but with the surveillance video in the elevator, it can be used as direct evidence to prove that the deceased was indeed deliberately led to D on the 13th floor, and the police can already arrest him.

"I still have a question." This time the questioner was Ma Jun. He continued; "Although we can prove that the deceased jumped from D on the thirteenth floor, we can also prove that the deceased was deliberately led to the thirteenth floor.

Floor d.

But the deceased never discovered that it was not his residence, which is a bit unreasonable. Even if the decoration and furniture of the two houses are exactly the same, there must be many details that are different.

For example, the clothes in the wardrobe and the shoes in the shoe cabinet are there in the deceased's residence, and they must also be on the 13th floor. They even have to be arranged in the same way. If the deceased cannot find his clothes in the wardrobe, they must be in the shoe cabinet.

If you can’t find your own shoes in the house, you will wear them right away.

Another example is daily necessities, such as shampoo, shower gel, toothpaste, etc. The d on the 13th floor must also use the same one as the residence of the deceased. Otherwise, when the deceased is washing, he will find that it is not his usual daily necessities.

Suspicious."

"You are right, we need the cooperation of a fourth person, which means there is a fourth murderer in this case!" He Jiahui paused and then said;

"Don't forget, there is a person who knows everything about the deceased's home! She even knows what brand of shampoo and toothpaste the deceased uses."

"You're talking about the housekeeping assistant Guan Rujun!" Ma Jun understood immediately.

He Jiahui nodded: "Yes, that's her! When we took a deposition for the domestic assistant Guan Rujun, she once explained the daily work process.

She said that the first thing she did every day was to buy the ingredients for the day and some daily necessities, that is to say, the shampoo, shower gel, toothpaste, etc. used by the deceased were all bought by Guan Rujun.

After she went to the deceased's home, she started washing clothes and cleaning. In other words, Guan Rujun knew very well what clothes were in the deceased's wardrobe, and she even folded and arranged the clothes neatly.

Not to mention other sundries, the fruits and vegetables in the refrigerator, bowls and chopsticks for eating, cups for drinking water, and towels for washing, these were all arranged by Guan Rujun.

If Guan Rujun was also involved in this case, she could have made the d on the 13th floor exactly the same as the deceased's residence, including all the details. Because Guan Rujun had originally taken care of the deceased's residence."

"That seems to be the truth." Ma Jun nodded.

He Jiahui continued: "Guan Rujun also said that after she made dinner, she would wait for the deceased to return before she left. We can imagine if Guan Rujun arrived at D on the 13th floor in advance and prepared meals for the deceased to return.

And when the deceased was guided to D on the 13th floor and saw his housekeeping assistant preparing meals and waiting for him, would he still suspect that this was not his residence?"

When you go home and see familiar people waiting for you at home, no one will think that they have gone to the wrong door.

He Jiahui continued: "Another very important point is that Guan Rujun is responsible for cooking dinner for the deceased. She is the most likely person to give hallucinogens to the deceased."

After listening to He Jiahui's case analysis, Ma Jun began to review the whole process: "According to your analysis, there are at least four murderers in this case, namely the two tenants on D on the 13th floor, the elevator manager, and the housekeeper.

Assistant Guan Rujun.

They first rented D on the 13th floor above the deceased, and then decorated it exactly like the residence of the deceased. Then they used the elevator manager to guide the deceased to D on the 13th floor, making the deceased mistakenly think that it was his home.

Then they pretended to be ghosts on D on the 13th floor, making the deceased think that he was haunted by ghosts. At the same time, they gave the deceased a hallucinogen to cause mental problems to the deceased. In the end, the deceased could not bear the mental pressure and committed suicide by jumping off the building on D on the 13th floor.

When the police are investigating, they will think that the deceased was mentally ill and committed suicide by jumping off the building in his own home, so that a murder case can be packaged as a suicide case."

"Yes, it's a pity that there are always gaps in everything. These murderers must not have thought that the deceased accidentally spilled vegetable soup and his shoes were stained with vegetable soup. This gave us direct evidence.

It proves that D on the 13th floor is where the deceased jumped."

He Jiahui paused and then said, "There is another point that can also support my inference. Do you remember the magic stick we caught? He once mentioned that he helped the deceased set up a Feng Shui array at home.

After the Feng Shui array was set up, the deceased was no longer covered in dirty things. This was because after the Feng Shui array was set up in the deceased's residence, there were many more Feng Shui ornaments, but there were no such ornaments on Floor D on the 13th floor.

If the deceased continues to be lured to D on the 13th floor, the deceased will not be able to see the Feng Shui ornaments and will spot them immediately. Therefore, the murderers need time to collect the same style of Feng Shui ornaments and rearrange them on D on the 13th floor.

That is to say, during those few days, the deceased was not led to D on the 13th floor. He returned to his residence to rest. There was no ghost there, so there would be no supernatural events, and the so-called dirty things would disappear.

.

And when the murderers gathered together the Feng Shui ornaments and decorated the 13th floor D to resemble the deceased's residence, they began to guide the murderer to the 13th floor D. At this time, various supernatural events naturally occurred again.

The deceased would also think that the Feng Shui array had failed, and then went to find a magic stick, drank talisman water, and applied talismans. But it was still no match for the murderer who deliberately pretended to be a ghost, and finally suffered a nervous breakdown and jumped off the building to commit suicide."

…

The police quickly identified the two tenants and the elevator manager, and then arrested the four suspects.

"Of the two tenants on D on the 13th floor, the man's name is Zhang Zhancai. He is not a programmer, but an electrical and mechanical engineer. The woman's name is Sun Xiaoling, and she is a makeup artist.

As for the elevator manager, his name is Zhou Chengkang. We are investigating the backgrounds of the three people. We don’t yet know their motives for committing the crime," Ma Jun introduced.

He Jiahui thought for a while and said: "This kind of joint crime involving multiple people can only be done in two situations. The first situation is that there is a mastermind who pays them to work as accomplices to commit the crime together.

This mastermind may very well be one of them, or he may not be among them. If this is the case, we only need to get one of the accomplices to speak, which will be a breakthrough in the entire case.

The second situation is that the deceased is their common enemy, and they all want to kill the deceased, so they conspire to commit the crime. There is a key foundation for multiple people to conspire to commit a crime, and that is trust!

There must be some understanding between several conspirators, otherwise it would be impossible to form trust and commit crimes together. If this is the case, we only need to get one suspect to speak, and the entire case may be broken.

I think before the interrogation, we can let them know that their accomplices have also been caught by us, so as to give them a psychological hint that their accomplices will confess before they do.

Faced with this situation, if you are just an accomplice, you will definitely not fight to the death, and you should quickly reveal the mastermind to get a reduced sentence. And if you are a co-conspirator to commit the crime, you will also reveal other people in order to get a reduced sentence."

"What an insidious trick!" Ma Jun looked at He Jiahui with admiration and thought to himself: A tough guy like me who is used to punching hard will never learn so many tricks in my life!

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