psychochemist

Chapter 73 Maintenance Worker

Evidence gathering at the scene continues.Chen Xingyang, Yu Fan, and Guo Na returned to the bureau first. After all, Yu Fan is not good at site surveys. What he is good at is organizing and analyzing the collected data, finding out some hidden logic, and using chemistry and psychology. Interpret them.

Back in the conference room, Chen Xingyang found a large stand-type whiteboard, and Guo Na posted a map of the town and some clues on the board, so that everyone could analyze it in all directions and find inspiration.In Chen Xingyang's mouth, this method is called the clue wall.The origin of the clue wall is actually the "mosaic investigation wall". In film and television dramas, it often appears that photos, newspaper clippings and other materials are nailed to the wall and then connected with lines to analyze the data.This analysis method is based on the Mosaic Investigation wall of the Mosaic theory (the theory is used in financial analysis and intelligence analysis).

Why should the clues be placed and observed in this way?In fact, it is also the reason. When we are usually confused, it is not how difficult the problem is, but our perspective of observing things becomes narrow. When we want to solve a problem, we tend to get closer to it , because we think that the closer we get, the clearer we can see.But there is a limit to everything. When you get too close, you only have the problem in your eyes, and the key to the problem may be in another room.You are like being in a maze, turning back and forth, and if you run around blindly at this time, you will only exhaust yourself.So what should we do?In the words of Yu Fan, we should use the perspective of our "heart" - the perspective of God. When you look down on the maze from a high place, the route to the exit of the maze will be clear at a glance.

This is an old Chinese saying - you don't know the true face of Lushan Mountain, you only live in it.

And a tool like the clue wall can always warn us-don't get too close, and keep a certain distance from the truth.

Yu Fan carefully looked through the files of the previous fire cases. If it was really the same person who committed so many crimes without being discovered, it proves that he should be from this small town. He has an identity that is enough to conceal To cover up their actions and facilitate crimes.In the first case, cigarette butts were used to ignite the textiles in the workshop; in the second case, the warehouse of labor protection supplies in the food factory was ignited through a short circuit; in the third case, an alcohol lamp was used to ignite the financial office of the clothing factory; in the fourth case, A match was used to ignite the waste cloth storage room of the shoe factory; in the fifth case, the puffed food warehouse was ignited with a designed ignition device, the storekeeper was burned to death, and the entire department store was ignited.

What is the connection?At this moment, Zi Yi also came back, still striding forward. From yesterday to now, it seemed that he had never seen police officer Zi Yi walking slowly.

"Sure enough, there is a new discovery!" Zi Yi excitedly shouted to the three of them holding a folder.

Without waiting for Chen Xingyang and the others to ask, the impatient Zi Yi said directly: "Just now our people took notes again, and a warehouse manager gave us new important clues. This warehouse manager is on day shift. Same scope as the deceased, just different hours. He told us that a guy in a maintenance suit came by during the day yesterday to fix light bulbs in the burning snack barn!"

Important clue!Chen frame Yang hurriedly asked: "What does it look like? How old is it? What are the characteristics?"

Zi Yi: "Wearing a mask, you can't see your face. After all, the air in this small town is poor, and they are such a special type of work, wearing a mask will not make people suspicious. The storekeeper even exchanged a few words with him, But this person is not talkative, and he didn’t talk to the warehouse keeper. The warehouse keeper thought that this person was quite arrogant at the time, so this incident left a deep impression on him. But judging from the voice, this person is not young, and his stature is about 1.7 meters. It’s even more strange What’s more, we asked the relevant person in charge of the supermarket, and they all said that they didn’t call anyone to come over and repair the light bulb, so it seems that this person pretending to be a maintenance worker should be extremely suspicious.”

Chen Xingyang scolded fiercely: "It's really deliberate!"

Zi Yi hadn't finished speaking yet: "Guess what, there's something even weirder. The maintenance worker finished repairing the light bulb and offered to help check the warehouse monitoring system and fire protection system, and the warehouse manager agreed."

Guo Na continued: "So, if the supermarket's monitoring system was broken last night, we don't have to be surprised. The fire protection system has also been tampered with. No wonder the fire last night did not trigger the supermarket's automatic sprinkler device. So Why did you miss important information last night?"

Zi Yi: "Because the person who should have been burned to death last night was actually the living storekeeper!" Everyone stared at Zi Yi with wide-eyed eyes and question marks all over their faces.

Zi Yi explained: "According to what the storekeeper said, he was originally on duty last night, but because he had something to do, he temporarily switched shifts with the deceased last night. When the fire caught fire last night, he immediately I was worried that his colleague might have an accident, but he didn't answer the 20 calls. He knew in his heart that the brother who helped him change shifts was more than good luck. He was in fear and guilt all the time last night, so for the first time When I was taking notes, I was in a trance and my mind went blank. Consultant Yu is right, it is indeed more rewarding to take notes during the day.”

Chen Xingyang: "Does this storekeeper have any enemies? Could it be the murder of this living storekeeper?"

Zi Yi: "This storekeeper has no enemies and is very popular. We have confirmed it through people around him, and initially ruled out the possibility of vendetta."

Guo Na asked: "Then is this arson case aimed at the supermarket owner?"

Zi Yi: "This can't be investigated yet. There are still some transcripts that have not been completed. We can only review them after the transcripts are completed."

Chen Xingyang continued: "Well, look carefully for clues and see if we can find out this little bastard pretending to be a 'maintenance man'."

Zi Yi nodded seriously: "Okay."

Chen Xingyang turned to Fan and said, "Old Yu, do you think there is anything else to add?"

From just now, Yu Fan has been staring at the wall of clues, not participating in the discussion, thinking about something without saying a word.

Seeing Yu Fan in a daze, Chen Xingyang leaned closer and asked, "Old Yu, why don't you talk? You've been staring at this board in a daze since just now. What do you think? Find the arsonist who burned the supermarket." Motive?"

Yu Fan took a deep breath, turned around slowly, exchanged glances with everyone present, then lowered his eyes and thought for a moment.Yu Fan looked gloomy, and said with a heavy tone:
"What he wants to burn is not this supermarket, but the whole town!"

　The horror of doing evil lies not in being discovered by others, but in knowing it yourself; the praise of doing good is not in the praise of others, but in your own peace. —— Butane

　　
　
(End of this chapter)