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Rope of Desire ¡¤ 12

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    Because he was worried that the suspect would commit another crime, Ming Ge asked the leadership for instructions and provided the progress of the case to the municipal and provincial media as quickly as possible. One day later, a special report titled "Midnight Ghost Hands" appeared on time  In prime time.

    The early warning information is different from previous detective documentaries. The biggest difference between the two is that one suspect has been captured and the other suspect is still at large. Therefore, as soon as the report was broadcast, it caused extreme panic in Yunxi City, almost  Overnight, it was rare to see young women in villages of all sizes in Yunxi City.

    Just when we all thought we could breathe a sigh of relief, a result that we were unwilling to accept appeared.

    The third murder happened again. The deceased was named Zheng Xiao, a junior at Yunxi Normal University. She originally rented together with her boyfriend. Unexpectedly, her boyfriend went on a business trip in recent days, allowing the suspect to take advantage of the situation.

    According to the investigation, on the day of the incident, Zheng Xiao happened to be participating in a group activity at school. When everything was done, it was almost early in the morning. After he returned to the rental house, he was killed immediately. The suspect's method of committing the crime was exactly the same as the previous two cases.

    The three consecutive murder cases have put a lot of ash on the faces of almost all the policemen in Yunxi City. The top leaders of our city bureau are even more outraged. They have offered rewards for arrests, patrolled 24 hours a day, sealed off the villages in the city, and rectified almost all of them.  All imaginable warning methods were used.

    Whether or not the case can be solved is related to the reputation of the entire Yunxi City police force. During this period, everyone in our department has almost no time to think about food and drink. You can imagine how stressful it is.

    After my father learned about the case, he took the initiative to help me contact the top trace inspection experts in the country. After many efforts, he finally found a breakthrough in the dotted shoe prints left at the scene.

    Based on the search of a large number of shoe print sample pictures, it was finally determined that the shoes worn by the suspect when committing the crime were football spikes. According to the number of cleats on the soles of common football spikes on the market, they can be divided into "13 spike type" and "14 spike type"  ¡± and ¡°15-pin hybrid.¡±

    "14-nail type": The sole is composed of 14 truncated cone-shaped convex anti-slip nails, 10 in the forefoot, arranged in the shape of a waist drum, and 4 in the heel, distributed in the four corners of a square.  Cleats are generally 1 to 1.2 cm higher than the sole of the shoe, the diameter of the cleat is 1 to 1.4 cm, and the diameter of the root is 2 to 2.3 cm.

    "13-nail type": The sole is composed of 13 truncated cone-shaped convex anti-slip nails. The arrangement is the same as the "14-nail type" except that there are only 3 anti-slip nails on the inside.

    "15-nail hybrid": The sole is composed of 13 round cone-shaped and 2 oval cone-shaped anti-slip nails.  The arrangement and corresponding distance of the 13 truncated cone-shaped cleats are the same as the "13-nail type". There is only one horizontally arranged oval cone-shaped cleat on the front of the palm and one on the back of the heel.

    According to the production and sales of football spikes on the market, the "14-cleat type" has an even number of spikes, the mold making process is relatively simple, and the distribution volume is huge, followed by the "13-cleat type", which has the least distribution volume on the market.  It is a "15-nail hybrid type".

    "15-cleat hybrid" football shoes are more expensive than other types of football spikes because of the complex sole mold process.

    As the saying goes, a good horse comes with a good saddle, and the sole craftsmanship has been upgraded to a higher level. Manufacturers have no reason to lower the quality of the shoe uppers. The slightly attractive "15-nail hybrid" football shoes are priced at several dollars.  One hundred dollars.

    At the scene of the three murders, the only thing that comforted me was that the suspects happened to be wearing "15-nail hybrid" football shoes. According to the measured data, the suspect's shoe size was a full 45, which is far higher.  Much larger than the size of a normal adult male.  Moreover, through comparison and microscope observation, it was found that the shoes worn by the suspect had almost no signs of wear and tear. In other words, the pair of football shoes he was wearing may have been purchased not long ago.

    There are not many stores that sell football spikes in Yunxi City. According to the filtering conditions I provided, the criminal police team did not go through much trouble and found clues in a shoe store on the pedestrian street in the city center.

    According to the description of the salesperson in the shoe store, a boy about 1.85 meters tall bought a pair of football spikes in the store half a month ago. Because the foot size was large, the salesperson personally asked the manufacturer to adjust the goods, so the salesperson remembered it very clearly.  .

    The surveillance video of Shoe Mall has almost no blind spots and can be saved for a month. With the help of the salesperson, Pang Lei retrieved a clear image of the suspicious person - a young man in his early twenties.

    With the sample video, the next step is to screen the massive video surveillance to see if the target person has appeared at the three crime scenes.

    After spending two nights with Fat Lei, he gave the most exciting news: "His grandma's three cases, thisThe grandson didn't even bother to change his clothes.  "

    But not long after we were happy, a fact that we had to face was placed in front of us: Although we obtained a clear image of the suspect, we did not know the name of the young man in the image. To put it bluntly, the case still had no substance.  sexual progress.

    After Fat Lei cut together all the videos with images of the suspect, he called Brother Ming.

    After watching the surveillance, Brother Ming asked Xiang Panglei: "The three scenes are located in the east, west and south of the city center, and the crime time was all in the early morning. What kind of transportation did the suspect arrive at the scene?"

    "It's a taxi."

    "Can the video reflect the type and make of the taxi the suspect took?"

    "Yes." Fat Lei skillfully operated the mouse, "In the third case, the suspect arrived at the crime scene in a 'Wan dt2211' Santana car. I also called the driver to verify because the passenger was too  Too much, he couldn¡¯t recall the situation at all.¡±

    "There is no need for him to recall, the taxi will tell us the answer. You should contact the taxi driver now and tell him that we need his taxi for detection experiments."

    "What? An investigation experiment? We still need to do an investigation experiment on this case?" Not only Pang Lei, but even I felt a little confused.

    "Taxi meter calibration experiment." Brother Ming's words gave me an epiphany.

    As a commonly used means of transportation, taxis are familiar to many people, but how exactly the taxi meter works can be said to be unclear to most people.

    Taxi meter is an automated special instrument that uses sensing technology to collect data and has measurement and supervision functions.  It is uniformly tested, adjusted, installed and sealed by the national technical supervision department. Under normal circumstances, it is impossible for users to modify or destroy the internal structure of the meter, let alone change the management core of the meter chip, so the data collected by the meter is very small.  objective.

    To check the taxi meter, you only need to start the car, connect the current, put the meter in standby state, and then click the "Check" button on the host panel.

    There are generally seven codes marked on the meter: db, day, h0, h1, 1d, 1h, and 1r, which respectively represent the empty kilometers traveled, date, boarding time, alighting time, business mileage, pricing time, and fare.  , every time you check out, this string of data will be saved.

    Through the video, Fat Lei can determine the suspect's specific date of boarding and time of getting off the bus. With these two values ????as a reference, we can read the suspect's boarding time and specific business mileage through the meter.

    With these two pieces of information, we then mark the intersections where the taxi may have traveled on the electronic map. After delineating the range, we can basically determine the suspect's location where he got on the bus.

    However, the taxi meter records information such as boarding time and alighting time through its own internal timing system. It is very likely that there will be an error with Beijing time. Therefore, before reading the meter information, a set of time calibration experiments must be done to find  The error coefficient between the experimental value and the actual value, so as not to bias the results.

    According to Brother Ming¡¯s method, Pang Lei finally found the place where the suspect got on the bus after many twists and turns - near the bus stop at the north gate of Lanyuan Community in Yunxi City.

    Immediately afterwards, Fat Lei took this as the center and retrieved all the surrounding surveillance data. The hard work paid off. According to the surveillance footage, every time the suspect committed a crime, he set out from the Lanyuan Community. In other words, he himself  Live in a community.

    Having mastered the suspect¡¯s facial features and arresting people in a small community, it couldn¡¯t be easier for the criminal police team. After half a day of investigation in civilian clothes, Ding Hongwei, the suspect responsible for three rape and murder cases, was finally arrested.  (Remember the website address: www.hlnovel.com
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