In the serious crime team, Ma Jun called the whole group to listen to He Jiahui's analysis of the case.

He Jiahui stood in front of the whiteboard and said eloquently: "The forensic evidence has determined through laboratory tests that the residue of vegetable soup found on the ground of Restaurant D on the thirteenth floor is consistent with the oil stains on the soles of the deceased's shoes.

The shoe prints found on the balcony railing on the thirteenth floor D also matched the shoes of the deceased, so it is now certain that the deceased did not jump from the twelfth floor where he lived, but from the thirteenth floor D!

I think everyone must have a question, the deceased obviously lived on the twelfth floor D, why did he run to the thirteenth floor D to jump off the building? The answer is actually very simple, the deceased regarded the thirteenth floor D as his home! ”

He Jiahui said, took out a few photos, pasted them on the whiteboard, and continued: "These photos were taken by the Forensic Department on the 12th floor, that is, the deceased's home.

I took these photos and went to the master who moved to the 13th floor D, but they said that they were the photos of the 13th floor D residents. And I have also observed the decoration of D on the 13th floor, which is exactly the same as D on the 12th floor.

Therefore, when the deceased entered the thirteenth floor D, he saw the exact same decoration, the same furniture, and the exact same arrangement as his own home, so he naturally regarded it as his own home.

No one would make their home exactly the same as someone else's, and it is clear that someone on the thirteenth floor was deliberately built in the shape of the twelfth floor D. ”

"Why would the tenant on the 13th floor D do this?" Yang Tsai immediately asked.

"To kill the dead, of course!" He Jiahui paused, and then said: "I think all the supernatural events encountered by the deceased during his lifetime should have been arranged in advance by the tenants of the thirteenth floor D.

For example, blood coming out of the water pipe, for example, the TV will turn on automatically, for example, the bed will keep vibrating, it should all appear in the room on the thirteenth floor D, and it is the tenant of the thirteenth floor D who is doing it.

After the deceased encountered these supernatural events, he immediately went down to find the security guard, and the security guard went back with the deceased to the deceased's real residence on the 12th floor D, where the water pipes were normal, the TV was normal, and the bed was normal.

Therefore, when the security guard goes to check and finds that everything is normal, he will think that the deceased is hallucinating, and the deceased will become more and more suspicious that he has encountered something dirty and haunted by ghosts.

In addition, the deceased took hallucinogens, it was easier to hallucinate, artificially manipulated ghosts, and coupled with the effect of drugs, the deceased eventually suffered 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 thirteenth floor was the real scene of the crime, so he immediately hired a moving company to remove all the furniture on the D on the thirteenth floor. ”

"He sir, according to what you say, the tenant couple on the thirteenth floor should be the murderer!" Uncle Hua asked.

"Most likely, they are not lovers, just partners, improvised partners for the purpose of killing the deceased. I remember the security guard once said that the two of them were not close. He Jiahui said.

Uncle Hua then asked: "He sir, there is a loophole in your analysis, the deceased obviously lived on the twelfth floor, how could he go to the thirteenth floor?" Even if you take hallucinogens and have mental problems, you can't tell the difference between the 12 and 13 buttons in the elevator, right? ”

He Jiahui smiled slightly and said, "What if the deceased pressed the twelfth floor, but the elevator stopped on the thirteenth floor?"

Most people will think that the elevator will stop at the floor they press, and then just walk out of the elevator. The same is true for the deceased, who, when he stepped out of the elevator, did not realize that he was actually on the thirteenth floor.

He would go directly to Block D, enter the password, be able to open the door, and then see the scene exactly like his own home, and he would naturally think that this was his home. ”

"I remember that when the lockpicking expert used the unlocker to open the code lock, the passwords on the twelfth floor D and the thirteenth floor D seemed to be different, right?" Uncle Hua continued.

"Passwords can be changed. D on the thirteenth floor can move all the furniture, and it is not a normal operation to change a password. Ho Ka Fai went on to say:

"I think that the password of the 13th floor D was the same as that of the 12th floor D, and after the deceased fell to his death, the tenants of the 13th floor D also changed the password at the same time."

"But if the deceased pressed the button on the twelfth floor, why did the elevator stop on the thirteenth floor?" Uncle Hua asked again.

"Of course someone did something about it." He Jiahui paused, and then said: "The murderer is not only the couple who rented the D on the thirteenth floor, but also the administrator of the property who is in charge of the elevator!"

Whenever the deceased went home, although the deceased pressed the twelfth floor, the elevator manager could control the elevator to send the deceased to the thirteenth floor and guide the deceased to the thirteenth floor D. ”

"In other words, there are three murderers in this case!" Uncle Hua nodded suddenly, and then asked, "When are we arresting someone?" ”

"Don't worry, there is still evidence to show." He Jiahui pointed to a computer next to him, and then said: "I have already called up the surveillance video of the elevator and put it for you to see." ”

He Jiahui said, came to the computer, and played a video in which a man walked into the elevator, and it was the deceased Wang Hai. After he pressed the button on the twelfth floor, the elevator went all the way up, and then the elevator stopped, and Wang Hai also walked out.

"Did you make a note of the time he took the elevator?" He Jiahui asked.

"Got it." Everyone said.

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

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

"A second slower than the first time!" Yang Tsai was the first to say.

"That's right, after precise measurements, there was a difference of 1.3 seconds between the two elevators. If the deceased went to the same floor, it should take the same amount of time, how could there be a difference of 1.3 seconds! ”

He Jiahui continued: "In 1.3 seconds, the elevator can just go up one floor, and similar surveillance video is not the only one. That is, someone deliberately manipulated the elevator to send the deceased to the thirteenth floor. ”

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

"I have one more question." This time it was Ma Jun who asked the question, and he continued; "Although we can prove that the deceased jumped from the thirteenth floor D, we can also prove that the deceased was deliberately led to the thirteenth floor D.

But the deceased never realized that it was not his residence, which is somewhat unreasonable. Even if the décor and furnishings of the two houses are identical, there are bound to be many details that are different.

For example, the clothes in the closet, the shoes in the shoe closet, what the deceased lives have, the thirteenth floor D must also have, and even the way of placing them must be the same, if the deceased can't find his clothes in the closet, and can't find his shoes in the shoe closet, then he will be put on immediately.

For example, daily necessities, such as shampoo, shower gel, toothpaste, etc., must also be the same as the deceased's residence. Otherwise, when the deceased washes, he will definitely be suspicious if he finds that it is not his usual daily necessities. ”

"You're right, you still need the cooperation of a fourth person, which means that there is a fourth murderer in this case!" He Jiahui paused in his voice and continued;

"Don't forget, there was a man who knew everything about the deceased's house! Even the brand of shampoo and toothpaste used by the deceased is known. ”

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

He Jiahui nodded: "Yes, it's her!" When we recorded a confession for our housekeeping assistant Guan Rujun, she used to explain the daily workflow.

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

When she went to the deceased's house, she began to do laundry and cleaning. In other words, Guan Rujun knew very well what clothes were in the deceased's closet, and even the clothes were neatly folded and placed by her.

Not to mention other miscellaneous items, vegetable and fruit drinks in the refrigerator, dishes and chopsticks for eating, cups for drinking water, and towels for washing, all of which were arranged by Guan Rujun.

If Guan Rujun was also involved in this case, she could have made the thirteenth floor D exactly the same as the deceased's residence, including all the details. Because the deceased's residence was originally cleaned up by Guan Rujun. ”

"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 go back before she left. We can imagine if Guan Rujun arrived on the thirteenth floor in advance, prepared a meal and waited for the deceased to go back.

And when the deceased was guided into the thirteenth floor, D, and saw his housekeeping assistant preparing a meal waiting for him, would he still suspect that this was not his residence? ”

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

He Jiahui continued: "Another important point is that Guan Rujun is responsible for cooking dinner for the deceased, and she is the person who is most likely to administer hallucinogens to the deceased. ”

Ma Jun listened to He Jiahui's case analysis and began to review the whole process: "According to your analysis, there are at least four murderers in this case, namely two tenants on the thirteenth floor D, the elevator administrator, and the housekeeping assistant Guan Rujun.

They first rented the 13th floor D above the deceased, and then arranged it exactly like the deceased's residence, and then used the elevator manager to guide the deceased to the 13th floor D, so that the deceased mistakenly thought that it was his home.

Then they pretended to be ghosts on the thirteenth floor, making the deceased think that they were haunted by ghosts, and at the same time gave the deceased hallucinogens 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 the thirteenth floor.

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

"That's right, it's a pity that there is always a mistake in Baimi, these murderers must not have thought that the deceased accidentally spilled vegetable soup, and his shoes were also stained with vegetable soup, which gives us direct evidence that the thirteenth floor D is the place where the deceased jumped off the building."

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

After the feng shui array, the deceased was no longer entangled in dirt. This is because after the feng shui array was placed in the deceased's residence, there were many more feng shui ornaments, while the thirteenth floor D did not have these ornaments.

If the deceased continues to be led to the thirteenth floor D, the deceased will not see the feng shui ornaments, and he will immediately see through them. Therefore, the murderers need time to collect the same style of feng shui ornaments and rearrange the D on the thirteenth floor.

In those days, the deceased was not led to the thirteenth floor D, he returned to his residence to rest, where no one had ever been ghosted, and there would have been no supernatural events, and the so-called dirty things disappeared.

And when the murderers gathered the feng shui ornaments and arranged the thirteenth floor D again like the deceased's residence, they began to guide the murderer to the thirteenth floor D again, and at this time, all kinds of supernatural events naturally happened again.

The deceased will also think that the feng shui array has failed, and then go to the magic stick, drink talisman water, and paste talismans. But he still couldn't resist the murderer deliberately pretending to be a ghost, and finally had a nervous breakdown and committed suicide by jumping off the building. ”

……

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

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

As for the elevator manager, his name is Zhou Chengkang. The background of three people, we are investigating. Their motive for committing the crime is not yet known. Ma Jun introduced.

He Jiahui thought for a while and said: "This kind of multi-person joint cooperation case is nothing more than two situations, the first situation is that there is a mastermind who spends money to hire them as accomplices to commit the crime together.

This mastermind may or may not be one of them. If this is the case, we only need to get one of the accomplices to speak, and it can be a breakthrough in the whole case.

The second situation is that the deceased is their common enemy, and they both want to kill the deceased, so they conspire to commit the crime. And there is a key foundation for multiple people to collude in committing crimes, and that is trust!

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

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

In the face of this situation, if it is just an accomplice, it will definitely not be carried to the end, and the mastermind should be quickly confessed to obtain a reduced sentence. And if it is a conspiracy, it will also confess to other people in order to obtain a reduced sentence. ”

"What an insidious method!" Ma Jun looked at He Jiahui with admiration, and said secretly in his heart: A fierce man like me, who is used to punching to the flesh, I am afraid that I will not be able to learn so many fancy intestines in this life!

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(End of chapter)