Fang Ling went to the fire door opposite, pushed open it, picked up a piece of carpet fragment, burned it with a lighter, and left after Mars. Bai Xue at the service desk tried to look at the fire door opposite, but no fire or smoke was found. About seven minutes later, Bai Xue raised her hand and said, "I smelled." At this time, she walked over and found that the range of burning was similar to what the waiter found.

Zuo Luo denied: "A killer stayed in the fire door for seven minutes? Who can be sure that no one would get on or off?" Many hotels have regulations that employees are not allowed to take the elevator if they are less than three floors. If he is sure no one will walk in the fire passage?

Continue to visit, the guest room manager on the 15th to 24th floor said that a few minutes before the incident, she walked past the fire escape outside the 19th floor. She received a walkie-talkie from the 17th floor and asked to send a set of hot towels to the 17th floor.

How did the murderer do it? Calculate the time? Seven minutes later, enter the 19th floor. The waiter happened to find the fire source and easily entered room 1916.

In the third simulation, the waiter of Baixue arrived at the burning place, pretended to slap Mars with his hand, stood up when he was scalded, then stepped on Mars with his feet and put it out, and then Baixue turned around and walked towards the service desk. She followed the waiter's actions at the time, temporarily stepped on Mars and called the supervisor. The time was very short. When Baixue turned around, Zuo Luo barely entered room 1916, but was not seen by Baixue.

In this way, theories can be done. The other party has a hacker, monitors the corridor, and the waiter walks towards Mars, and the murderer enters the door. How did the murderer leave? After the waiter calls, the supervisor runs to the 19th floor. The supervisor asks the waiter to open the fire door on the other side, holds the door with something to keep the passage open, then checks the fire, and contacts the room manager. The room manager and the security manager arrive together, discusses for a while, and then disperse after about ten minutes.

With the cooperation of the hacker, the murderer is likely to leave room 1916 when everyone is focusing on the fire door opposite.

After the above simulation, everyone agreed that the murderer could kill people in theory, but every link was very tense and far-fetched. Everyone agreed that the real crime process was definitely not what everyone simulated.

Su Cheng has a clear idea and started to sort it out. At present, it can be confirmed that the murderer is professional. The professional murderer will not deliberately show off his skills or play with the police. Everything he does is meaningful. Since this is the case, why should he remove the video for one minute and thirty seconds? Do you show that he is awesome? The hacker is awesome and can easily cut off some of the videos. The murderer is awesome and completes his work in one minute and thirty seconds. In order to show off his abilities?

No, it has been ruled out through simulation, so there are two answers. The first is that the murderer borrows some of the resources to complete his assassination work. The second is that the murderer needs to escape.

Especially the second point, Su Cheng heard Da Pineapple talk about a case. At that time, a robbery and murder occurred at a gas station on the side of Sweden. After on-site investigation by the police, he believed that the robbery was the reason for covering up the crime, and the murderer's real purpose was to kill people. Since there was only one highway, the police arranged checkpoints and investigated the surveillance checkpoints, and eliminated the suspects one by one, and eventually found nothing.

This case was a case that Big Pineapple intervened when she was a policeman when she was young. Due to the rigorous evidence collection of the police, Big Pineapple did not think that the murderer could get away with the law, but the result was that she was free from justice. There must be other reasons. The reason is that the police were misled. They believed that this was a radius of 30 kilometers of uninhabited road, and the murderer must have driven. The fact is that the murderer walked across the mountains and took 10 hours to reach the gas station. After killing, he spent 10 hours to leave along the road. Although Big Pineapple guessed the means of committing the crime, he did not catch people because there were mountains nearby, and time had passed a long time, and the police lacked the conditions to pursue the murderer. This case became a unsolved case, and because of this, Big Pineapple could not verify whether his speculation was right or wrong.

When similar cases prompted his mind, Su Cheng began to check the windows. The living room and bedroom windows were not locked inside. He opened the curtains and saw a very lonely hotel with a low building below.

Su Cheng said a few words to the duty manager. The duty manager called the day shift and replied to Su Cheng: "Floors 14th to 30th floors are rooms. There are three guests in room xx16 today. In the afternoon, only one lady checked in room 2516, about four o'clock in the afternoon."

Su Cheng said: "Zuo Luo, let's go to the headquarters to check the registration information."

Entering the elevator with the duty manager, Zuo Luo asked: "Do you have any ideas?"

"Yes, because our visit today made the other party want to kill David. Time is very fast, and we will soon know David's existence. Not to mention the details, I will first talk about my thoughts, check in at four o'clock, take a rush, kill people, and then go to our own position through the rope. A series of methods such as one minute and thirty seconds are created to mislead us in a short time. Once time passes, he will slip away." This inference still needs to be added, and this reason is not enough to make the other party set up a suspicion array.

Zuo Luo said: "If this is the case, most of the people have already run away."

Su Cheng said: "It depends on luck. If you get in close contact with the service staff at the headquarters, fill in information and register information, you will leave some traces."

Zuo Luo said: "The ID card must be true, but it won't be me."

Su Cheng said: "Agree." It's not that you can't register your real ID card, but the suspect who will run away will not use his ID card. This is common sense.

...

There were no people above the room 1916, 20, 21, 22, 23, and 24 were an elderly couple traveling abroad. The 25th floor was the suspect resident. Song Kai and Fang Ling went to knock on the door and opened the room 2516. There was no one inside and there was no luggage. The entire room looked like no one had ever lived there.

The lady from the station read the information: "At 4 pm, a gentleman named Simon booked room 16 on the 20, 21, 22, and 23rd floors. He will arrive at around 8 pm. Because it is past 8 o'clock, we called to confirm that the phone could not be reached."

Su Cheng looked at the 2516 registration information and called the phone number filled in. There was no accident, it was an empty number. There was surveillance, the front desk service staff had contact, and the registered handwriting seemed to be targeted. However, this took time and it might take a lot of time. At that time, the other party could find an excuse to explain the reason why he checked out immediately. The police lacked strong evidence. In addition, because the deputy never held a pen, most people's deputy did not write, but wrote, lacked the transfer of writing skills and potential habits, and it was difficult to confirm the handwriting. Last point, the police had DNA and fingerprint database, but the handwriting database was still quite rare, let alone the deputy.

When Su Cheng and Zuo Luo asked about the service staff at the headquarters, Fang Ling's mother, Fang's mother who was working at the Interpol, entered the hotel lobby. Su Cheng and Zuo Luo politely greeted each other and sat down aside.

"Don't say so many polite words, you won't let Fang Ling call me directly." Fang's mother took out the computer in her bag, opened the screen, and introduced: "There is no information in the Interpol, but I'm looking for friends from France, and she helped me understand David's situation. David was once a liar and a thief."

"Scammers and thieves?"

"Yes, he is a member of a fraud gang. David has very strong ability to copy and fake, and he can be used to distort the real thing. After being arrested five years ago, he became an art appreciation person. At the same time, his paintings created by him were also welcomed. He is currently considered a little famous in Marseille."

Su Cheng thought for a while: "This..." What does it mean? It's worth your trip. Isn't it good to make a call?

Fang's mother opened the computer and said, "This oil painting is called a red, yellow and blue composition, which is worth millions of dollars. The oil painting was stolen seven years ago. David first copied four red, yellow and blue compositions and borrowed the stolen news. Their gang sold them to the outside world, each oil painting for two million dollars. The police recovered three fakes. Three months ago, the red, yellow and blue composition was auctioned online at a small auction house in Lyon. A mysterious buyer invested 80 million dollars to buy the oil painting. The buyer asked the auction house not to provide auction information to any news media."

Fang's mother said: "The auction house sold the authentic products. At that time, David's gang admitted that they had stolen red and yellow blue compositions, but they had sold them to a collector who hired them to steal for three million dollars. They didn't know who they were."

"Wait, there seems to be a legal contradiction." After all, it is Europe, not Africa... Well, is this a regional discrimination?

Fang's mother knew what Su Cheng meant, and introduced: "The red, yellow and blue composition was stolen by David's gang from a private collector's home. The private collector did not insure the oil painting, nor did he have any valid evidence to confirm that the stolen red, yellow and blue composition in the hands of the private collector was authentic. The auction house was identified by an authoritative organization before the auction and confirmed that the red, yellow and blue composition was authentic. Although the private collector applied for a court ban, because there was no evidence to prove that the oil painting was owned by a private collector, the auction house could only auction it."

Su Cheng nodded and asked, "The market price is only a few million."

Fang's mother said: "There is a huge sum of $4 million, after all, it is an artist after World War II. After the auction, the French police investigated the case, but the mysterious buyer came from the Middle East, and it was difficult to find the information, and the real money of $80 million was received."

Su Cheng asked: "Where is the seller?"

"The seller is a Russian young man. He said that the oil painting was given to his grandfather by the painter. What is more doubtful is that afterwards, the Russian young man invested all the fees and taxes and fees in an Argentine company that had just been established less than a week ago. The Argentine company went bankrupt two days after investment errors."

"Haha, this is an obvious money laundering transaction." Cross-border money laundering, come and investigate, France investigates, France investigates Russia, Russia investigates Argentina investigation... The money has long been transferred. Su Cheng said: "The key point is still 80 million. Someone wants to give someone 70 million, and used some roundabout means. Why? Nowadays, senior criminals have directly transferred money through confidential bank transfers, why do they have to pay taxes and handling fees? More than 10 million, Tang Geese only charges a 4% handling fee."

Zuo Luo asked back: "Is this the point? The point is what does it have to do with David's death."

Su Cheng replied: "It can basically be inferred to a conclusion. David told Hua Zihan the story of this painting. Hua Zihan asked his parents why they bought this oil painting for the supermarket, or other reasons. This caused Hua Zihan to burn the oil painting very annoyed... No, it is possible that the oil painting was not burned by him. The oil painting is not easy to be ignited, and some additives are added... so it triggered the fire alarm. Hua Zihan is not the male lead in the TV series, so he won't be such a saint, right?"

Zuo Luo said: "No matter what, if David dies, we can justify asking Hua Zihan to visit the police station."

Su Cheng already has a clear composition in his mind. According to the time, he calculated that 80 million yuan to buy oil paintings, when he was in trouble with Global Energy. He can boldly guess that Mrs. Hua asked the hanged ghost to contact foreign ghosts for help. The other party agreed, but it was impossible to pay for help. How to give money? People also have a complete set of methods. Artwork money laundering is the most commonly used money laundering method in the world, but it is usually an ants moving, such as 200,000 or 500,000 yuan. There is no such a high price as 80 million yuan, unless they don’t take the police seriously.

Then at the reunion of Hua Zihan, David discovered this red, yellow and blue composition. There were some questions in it. David thought it was a fake or a real one? Why did Hua Zihan get angry? Is it because he bought a fake? Or other reasons? Is Hua Zihan very noble morals. When he knew that his mother was laundering money, he was so angry? My mother, we should be upright. Mrs. Hua: I am a silly son, you should do your art.

David knows too much, and it is likely that something 80 million is involved, so David cannot live anymore, which is common sense. The problem now is that he doesn't know what David and Hua Zihan said. The reason why David was killed... is actually not good to confirm. As a detective, 80% of the possibility can be made, but this inference is not enough, so seeing Hua Zihan is the most effective method.

Zuo Luo looked at his watch and it was already 10:30 in the evening: "I'll go talk to Hua Zihan."

"Now, I will most likely reject you in the name of rest. I suggest you gather Hua Zihan and other classmates in the evening to learn about the details of last night. Anyway, they are here to attend the memorial service, so they don't care about attending one more."

"..." Zuo Luo was too lazy to pay attention to Su Cheng, so he called Bai Xue and asked her to contact him.

Song Kai sat over, sat next to Su Cheng, holding the computer in his hand: "This is a surveillance video of the guests in Room 2516 captured by the hotel surveillance. The lobby is high-definition surveillance. According to technical analysis, I think it is a man, dressed in a woman. Looking at this position, although the hair is black, there is a color difference and the edges are unnatural. You can definitely wear a wig. Because of women's clothing, you can naturally add false eyelashes, eye shadows, powder and other makeup methods, and you won't be suspected of carrying a big shoulder bag."

Su Cheng asked: "Is there any new clue?"

Song Kai said: "She left the side door of the hotel at 6:30. There is a blind spot for surveillance in this area. I mobilized all the surveillance nearby. I didn't find anyone who was relatively matched within ten minutes... This is the blueprint. When the side door is out, there are steps and flowing water. There are three intersections in total. Turn left, head to the main entrance, turn right, go to the parking lot. Go straight, walk straight, and the road."

"You mean that no suspicious person was found in three intersections?"

"Yes, but it's hard to say that the other party has a hacker."

Su Cheng nodded slowly: "No wonder he delayed the time. They found that Zuo Luo and I had already gone to the hotel, so they arranged for a while and killed people. After all, we might ask for the door to be opened directly. Once we found David's body and blocked the hotel, we might not have time to run away." The other party was guilty and thought that Zuo Luo and Su Cheng would open the door directly. Zuo Luo and Su Cheng never thought that David would be killed, so of course they would not open the door directly.

This murderer can be said to have run away. The murderer in this kind of case has never been the most important one. They are just a tool. But it is also very important, because without a murderer, you cannot prove the conscript behind the scenes. Another conflict comes. Even if you catch the murderer, the murderer may not know who the conscript behind the scenes is. Or it is said that the ganese has strong destructive power. Money is omnipotent, what? Money cannot buy time? Boss, add two minutes.
Chapter completed!