Chapter 33 3. The case is a math problem

In the middle of writing, a friend read the previous paragraph and asked me: "According to the time calculation, the money has not been paid out of the building! Or is there someone else to respond?!" I happened to attend a gathering of Lao Yin, political commissar Lei and the former Beijing criminal police that night. , Sa said this speculation in passing. Unexpectedly, after saying this sentence, everyone was quiet for a while, and someone asked: "Is the one who left the message the Shi Laoqi you mentioned? The one who wrote "Those Things About Six Doors"?" I told him, The person who said this should be an ordinary netizen with no police background.

One boss gave a thumbs up and said: "This brain, if he has nothing else to do, he is quite suitable to be a policeman. In this case, we also believe that there is an accomplice." It turned out that this one belonged to Old Hei. It's just that their speculation is a step further than the netizens - they believe that there must be an accomplice of the criminal, driving a car, waiting for him nearby.Mrs. Zhao said "good", not to praise Lao Hei, but because he felt that the development of the investigation was connected with his thinking. "Why is there such a conclusion?" Lao Sa asked.

The boss shrugged his shoulders: "You can analyze it. The suspect took the black leather bag, walked out the back door and walked towards the intersection without stopping. What was he going for? There is no doubt that he was going to meet his accomplices. We will meet." From the perspective of criminal psychology, the criminal's greatest desire and most reasonable action is to leave the scene of the crime as soon as possible after he succeeds.And this suspect came out of the back door of the house, walked for five minutes, and went to cross the road, which is a bit special in itself-why didn't he stop the taxi on the road?

After looking at the situation around the back door of the building, the investigators came to a common conclusion: he was going to the street across the intersection to meet his accomplice, who was waiting for him in a car parked there. reason? First, in order for the criminal to escape as soon as possible, taking a car is the best means.If you don't take a taxi, there must be a reserved car waiting. Second, the street behind the real estate company's back door is one-way and quite narrow, with no parking on the side of the road and no parking lots on both sides.Therefore, the accomplice of the perpetrator had to park his car on the east side of the intersection and wait for the suspect to meet and flee.

Could it be that the criminal just parked there without an accomplice and was a lone robber? The scouts thought it was unlikely. On the opposite side of the intersection, the direction the criminal was walking was a tree-lined road. Although there was parking space on the side of the road, it was not an official parking space.The suspect had been with Lao Feng's mother-in-law before, and the old lady was so dizzy that he couldn't have parked the car here for hours.If there is a car parked here and the driver disappears, the traffic police will intervene if there is trouble. If the uncle of the police really drags the car away, it is enough to make the criminal cry.

Therefore, it is speculated that his accomplice stopped here at the agreed time and waited, and no one left the car, so naturally no one cared about him. The scout believed that this was obviously more reliable than driving the car to the back door of the building to pick him up, because then a slight error in timing would cause a blockage, at least giving people a deeper impression of the car. However, these conclusions were drawn after grasping a lot of details, "How did he know that there was an accomplice?"The scout, who is used to interrogating prisoners, was puzzled by this netizen's ability.

For a moment, he turned his mind - what the scout thought of, Team Feng obviously thought of it too. The suspect has an accomplice, the criminal has quite a lot of anti-investigation experience, his accomplice is more likely to be a habitual criminal, the old man Zhao is an anti-criminal expert who is familiar with the habitual criminal... I suddenly discovered that Team Feng must drag the old man Zhao into the water in this case, I'm afraid it's not blind worship, but a targeted one! I later asked Team Feng if he meant this, and Team Feng smiled and said nothing, as if he was sitting on a Buddha.

Some scouts said behind their backs, Captain Feng, loves to play suspense, loves to...pretend to be X... Team Feng pondered for a long time, but couldn't figure out why the old man said "yes". After thinking about it, he called Old Hei again: "Did the old man find anything new?" Lao Hei replied: "I adjusted the surveillance videos of five savings offices, within two hours of the incident, let us check whether there is anyone or any package." "Which five?" Team Feng's eyes lit up, and he marked it on the map while listening to the answer. The five savings offices were hung on the map in a zigzag manner, and a string of pencils formed an arc from the crime scene to Fuyou Street.

Captain Feng's eyes became brighter, and he asked, "Has it appeared?" "No, no people, no bags." He put down the phone, thoughtfully, connected the location of the crime and Fuyou Street together with a ruler, looked forward along the ruler on the map, and there were three words in front of it - "Beijing Station". Captain Feng was stunned for a moment when the phone rang again. Pick it up, it belongs to the old man.Mrs. Zhao asked: "Can you reach Dongxinglou Restaurant in an hour?" "Yes, very capable!" For work, er, and for the sake of not causing revolution in his own family, Captain Feng replied repeatedly: "How about it, old man, is there a show? How many people do you want to bring?"

"Just you is enough. People, I'm not sure, money, 80% can be recovered for you." The old man replied. Later, I also looked at Team Feng's map of Xicheng District, and I was quite puzzled.After much deliberation, I still asked: "Captain Feng, there are more than five savings banks on Fuyou Street where the crime occurred. Look, there is one here, and another here. Why are you looking for these five? These five savings banks often engage in illegal transactions?" Team Feng laughed: "How is that possible. Let me remind you, you can figure out why - there are ten savings banks on this road, but none of the other five banks had any deposit and withdrawal business in different places at that time."

"I don't understand." I shook my head. Is there any relationship between remote access business and crime? After Team Feng’s explanation, it became clear: after a successful fraud, most scammers would choose to flee.Nowadays, liars are getting more and more capable of defrauding money. A health care prescription can deceive thousands of people, and almost caused the global price increase of mung beans; Yes, that is already a fourth-class scammer; if you deposit money and run away, and then come back to get it after the news, it is a third-class scammer; anyone who can get into a second-class scammer knows how to use various financial services at home and abroad. The means of passing the ball in the middle, escaping empty-handed, and withdrawing money from other places. Why do you want to do this? Quite simply, who would go out with a suitcase of cash if they weren't short-sighted?On the one hand, the police saw that they wanted to investigate, and if they accidentally ran into someone like Lao Yin, they would miss out;As the saying goes, if you are not afraid of thieves stealing, you are afraid of thieves thinking about it. We ordinary people understand it, and so do scammers. The case of defrauding Dui Feng's mother-in-law seems to be a second-class liar.Fuyou Street is between the crime scene and Beijing Railway Station. His escape route is very clear. It is estimated that the matter has already gone to other places.Considering the amount, the scammer took 600,000, and the possibility of going to the post office to remit the money is relatively small. The rest is the savings bank, but since he wants to flee, he must choose a bank that can deposit and withdraw from other places. Someone said, you just talked about second-class liars, what about first-class liars? Liar first class?People don't cheat for money anymore, just like the couple in "If Tomorrow Comes", the so-called "what I drink is not wine, but loneliness" is basically this state. "Have you ever met such a first-class liar?" I asked Captain Feng. Captain Feng shook his head, saying that I have caught a few kleptomaniacs. Smiled, looked at the map again, said Team Feng, I still don't understand, the place where the crime happened is Fuyou Street, the middle place is huge, why did the old man think that the liar had to go this way?Will he take the money to his associates? Captain Feng laughed and said, "This is actually a math problem." math?Sa originally wanted to ask how the police involved math problems in solving the case, but suddenly remembered that he met the last guard of General Chen Guang a few days ago, and learned that the commander of the 115th Division of the Eighth Route Army, who was born as a worker and peasant, studied in the last few months of his life. It's calculus - the red general has realized that future missile warfare will be inevitable, and he needs to make some preparations for coming out to work... Captain Feng interrupted Sa's thoughts, stretched out a finger, and asked me, "Is it clear when the crime happened?" I nod. "You know the time to throw that black bag, right?" Team Feng raised his second finger. "Wait, how do you know when he dropped the bag?" "Look at when the two bags of garbage on it were thrown away. This time it was a coincidence. After the case was solved, I went to ask. The upper and lower bags of garbage were thrown away by a family. The children in that family were weak and lost it." One bag, and when I got home, I took the second bag and threw it away. The bag was sandwiched between the two bags. Obviously, when he was going back and forth, the suspect happened to throw the bag. So, at this time, it is very clear." "How do you..." Just as I was about to ask the policeman how he knew which bag of garbage was thrown away, he suddenly remembered that Sheriff Hei had said that the old man dug out half an envelope from the trash can. Seeing that I hesitated to speak, and didn't care about my surprise, Captain Feng smiled and said, "It's the same without the half envelope. If we search the garbage thrown by your house every day, 80% of them can find out your home address." , there are too many clues there." Thinking of the small advertisements that come in every day, Sa is speechless. Seeing that I have nothing to say, Captain Feng stretched out his third finger: "Based on the time, it is not difficult to calculate how long it will take to queue up to deposit money at the savings office at that time, isn't it difficult? This is in Xicheng, and it is similar in any of the savings offices. " "It's not difficult." I nodded. People can roughly estimate when there are more people going to the bank to save money and when there are fewer people. It is not a big problem for the police. Captain Feng stretched out his fourth finger and asked me: "It's not difficult to look up the traffic data in Xicheng District at the time of the incident, and then calculate the time required to drive from the incident to Fuyou Street by different routes?" Nodding again, unless the criminal intentionally made two more laps around the crime scene, otherwise, with the current technology, it shouldn't be difficult to calculate this. "Then," Team Feng held up his fifth finger, "if you subtract the time of the incident from the time he spent throwing bags on Fuyou Street, and then subtract the time he spent queuing up at the savings office to save money, then compare the rest. The calculated driving time, which road he took, isn't it clear?" "Furthermore," Team Feng said with a little complacency, "the time the criminal threw the bag was about an hour and a half away from the scene. During this time, he couldn't walk to Fuyou Street. This, in turn, proved that he was indeed traveling by car." Escape. And for an hour and a half, you have to drive straight ahead, or hand over the money to someone else in the middle. A simple handover will not take so much time. Therefore, he must have done something in the middle to delay the time. Most of them may still go to the savings bank." "Could it be that he turned somewhere? Give the money to someone he trusts." Sa asked. "It's unlikely, then he will probably leave the money and the bag and let others deal with it later-according to criminal psychology, the other party will probably wait until after dark to deal with it. He lost the bag so soon. The first explanation is that he himself did it." Yes, because he was on the way to escape, so he didn’t worry that anyone around would see him; secondly, he had already found a place for the money, and throwing the bag to bid farewell to this case was a subconscious behavior.” There is nothing to say, Team Feng should become a psychologist (we often think that the main task of the police is to do things, but after contacting several criminal investigation experts, I feel that there are misunderstandings about the police in our country). All I can say is "God". "It's nothing, our criminal police can basically think of these, it's just daily work." Captain Feng said modestly. day-to-day work?Sa thought for a moment, and couldn't help but ask Captain Feng: "Since it's a daily job, you can think of it, so why do you have to let the old man do it?" Captain Feng looked at Sa and nodded, and said, "Good question." He pointed to the map: "Isn't there something we don't know? You see, the criminal in the savings bank didn't show up, how did he deposit the money on the map?" where?" "This, can the old man know?" "Well," Captain Feng said, "Do you know why he asked me to go to Dongxing Building?" "Arrests?" "No, he asked me to get some money..."