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Bloodthirsty Gamble ¡¤ 6

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    At 10 o'clock in the evening, the first project meeting was held on time. The meeting was chaired by Brother Ming: "Ye Qian, first introduce the investigation situation of the Criminal Police Team."

    Ye Qian was well prepared and replied: "The deceased's name was Ding Sheng, nicknamed 'Camel', male, 52 years old, divorced, living alone. Ding Sheng first made his fortune by opening a casino. In 1993, he was sentenced to a fixed term on suspicion of opening a casino.  He was sentenced to 10 years in prison. Due to his good behavior in prison, his sentence was commuted several times and he was released early in 2001. After being released from prison, Ding Sheng has kept a low profile and no new criminal record has been found on him.

    "After Ding Sheng was imprisoned, his wife Cui Ling agreed to divorce him. Ding Sheng has a son, who is raised by his ex-wife Cui Ling and is currently studying in the UK. Because the two have been separated for many years, Cui Ling knows nothing about Ding Sheng's situation.  known.

    "Ding Sheng has been going to mahjong parlors all year round since 2015. He has three regular playing friends. The four of them play from 2 p.m. to the early morning every day. They have been doing this for consecutive New Year's Eve."

    Brother Ming: "The murderer cut off Ding Sheng's genitals. It was obvious that he was venting his anger. Has Ding Sheng offended anyone in society since he was released from prison?"

    Ye Qian: "Lao Jia inquired about Ding Sheng's situation through an informant. It is said that after Ding Sheng was released from prison, he secretly opened a casino in the mountains, but it was closed after a short time. As for whether Ding Sheng has any enemies  , we don¡¯t know yet.¡±

    Brother Ming: "Besides playing mahjong, what else does Ding Sheng like to do?"

    Ye Qian: "Go to the bathhouse to find a lady. Anyone who knows him well knows that his life can be summed up in two words, one is gambling and the other is whoring."

    Brother Ming: "Ding Sheng likes to visit prostitutes, and the murderer cut off his genitals when committing the crime. Is there any potential connection between the two?"

    Ye Qian: "The line of prostitution has also been investigated. After Ding Sheng's mahjong session every day, he used to go to the island sauna to find a girl to knock his back. There were not many girls in the bathhouse. After the incident, we controlled all the girls in the bathhouse and investigated them one by one.  , no one has time to commit the crime.¡±

    Brother Ming: "Are there any other situations?"

    Ye Qian: "That's all for now."

    Ming Ge picked up the autopsy report: "The deceased had a non-fatal depressed skull fracture on his head, which was caused by a blow with some kind of cylindrical hard object. The specific injury tool cannot be inferred. There were many scratches on the buttocks, heels and other parts of the deceased.  The mouth may be a trauma caused by the suspect's repeated struggle after cutting off the deceased's genitals."

    Fat Lei began to imagine the scene at that time: "The more the deceased struggled, the faster he bleeds. No wonder he died of excessive blood loss."

    "The death process should be similar to what Jiao Lei deduced." Brother Ming then looked at me, "Xiaolong, what about the trace test?"

    I selected a few photos of the scene and played them on the projector: "It is easy to judge from the way the car entered the water. After killing the people, the suspect deliberately drove into the water to destroy the bodies and eliminate traces. All four windows were  In order to open the case, the suspect did this to facilitate his escape. After understanding this, the next step is to find out where the suspect came ashore.

    "The silt at the bottom of the lake is rich in organic matter, gray-brown in color, and smelly. Based on this characteristic, I finally found the location where the suspect came ashore. But because the shore was overgrown with weeds, it was difficult to leave footprints, so I finally pinned my hope on  In the lake.

    "The lake where the body was dumped was formed by natural collapse. There is a long gentle slope from the lake shore to the center of the lake. The suspect would have walked on the gentle slope when he came ashore. So with the help of the frogman, I found a series of footprints in the shallow water area.  . Unfortunately, the silt has completely covered the footprints, and the sole patterns cannot be seen at all. Moreover, people walking in the water will encounter greater resistance, and I cannot infer the physical characteristics of the suspect based on the stride length. I was tossed in the water.  After 3 hours, I finally extracted only this one." After that, I clicked on the next one.

    Fat Lei rubbed his eyes vigorously and asked with some confusion: "Isn't this just a piece of mud? What can you tell from this?"

    I used a red paintbrush to circle a row of red circles on the far left side of the photo, and then explained: "This is not mud, it is a kind of incomplete shoe print. It is formed by the side slipping of the shoe on the mud. Our traces  It is called 'sliding incomplete shoe print' in science.

    ¡°¡®Sliding incomplete shoe prints¡¯ can be divided into ¡®sliding incomplete shoe prints with no use value¡¯ and ¡®sliding complete shoe prints with use value¡¯ according to whether there are obvious patterns on the soles.

    ¡°The former type, as the name suggests, means that the soles have no patterns, and sliding sideways can only form a smooth mud mark, which has no use value. The latter type is of great use.¡±

    Fat Lei was a little confused: "What use can this do?"

    I enlarged the circled position and continued: "We can break down the side sliding action: the first step, the shoe?Contact the ground; in the second step, gravity falls on the sole of the foot; in the third step, the friction on the ground is insufficient and sideslip occurs; in the fourth step, a large area of ??lateral slippage is formed.

    "It is not difficult to imagine from the first two steps that before the side slip occurs, the sole actually gives an effective force to the ground. The moment the sole touches the ground, a shoe print has been formed, but the complete sole pattern is followed.  The side-sliding action of the shoe is destroyed. However, it is damaged. We can still find the edge patterns of the soles on the side-sliding shoe prints. With these patterns, we know the shape and spacing of the sole bulges.

    "Using this method, I concluded that the bulges on the soles of the suspect's shoes are square-shaped, and the distance between the two bulges is 0.42 centimeters. Although the data cannot be used as evidence, in subsequent investigations, as long as the suspect shoe prints are found, this conclusion will be  can be used as a basis for exclusion.¡±

    Fat Lei gave a thumbs up: "Cow!"

    I continued: "Only so many clues were found at the body dumping site, and then I shifted the focus of the investigation to the Passat car. If the suspect wants to drive, he must have the car key.

    ¡°Car keys on the market can be divided into two categories: internal milled grooves and external milled grooves.

    ¡°Internal milling groove, it is a flat key blank with serpentine grooves milled out with a milling machine. These irregular grooves correspond to the spring pieces in the lock. The internal milling groove key has two sides and is designed to facilitate front and back insertion.

    "The external milling groove is just the opposite of the internal milling groove. It is the key blank with knurled protrusions milled on the side. When the outer milled key is inserted, the height of the knuckle corresponds to the height of the spring piece inside the lock. The key with the outer milling groove is the same  There are also two sides.

    ¡°However, some car manufacturers, in order to increase the difficulty of opening the lock cylinder, will mill out some intricate patterns on the key surface, turning the original dual-track lock cylinder into a more sophisticated four-track lock cylinder.

    "The Passat sedan driven by Ding Sheng has an upgraded four-track lock cylinder with internal milling grooves. To open this kind of car lock, you either have the original key or you need professional tools. When I dismantled the car lock, I found that the driver  The lock core of the door has fresh signs of prying."

    Ming Ge added: "The blunt force injuries on the deceased's head were caused by multiple blows from behind. If the suspect's committing crime space is large enough, one heavy blow can cause the current blunt force injuries. It can be seen that the blows occurred in  In a small space. If the suspect has picked the lock, he should have entered the car in advance and waited for an opportunity to commit the crime."

    "Let me interject." Fat Lei interrupted, "I looked at the surveillance near the small island mahjong parlor. There are only a few city surveillance on the main road. The surveillance inside the mahjong parlor showed that Ding Sheng walked out at 1:25 a.m. on the 28th.  At the mahjong parlor, the car appeared on the main road at 1:30, with an interval of only 5 minutes; Ding Sheng's car was parked in the parking lot on the east side of the mahjong parlor, and it took 2 minutes to walk. In this way, the suspect will  Ding Sheng knocked him unconscious and then dragged him to the trunk. It only took 3 minutes.

    "It takes one and a half hours to start from the island in the early morning and accelerate all the way to the collapse area. The total time taken by the suspect in the surveillance recording is 1 hour and 24 minutes; from this point of view, the suspect's entire crime process was very smooth. This is definitely a crime.  Premeditated homicide.¡±

    The project meeting has ended here, and it is not difficult to restore the process of the murderer's crime: checking the location in advance - picking the lock and entering the car - stunning with blunt force - changing position - killing and sinking the body.

    From this series of coherent actions, it is not difficult for us to analyze several characteristics of the suspect.  First of all, he knew the life pattern of the deceased very well, and even found out exactly what the lock cylinder of the car he drove was like; secondly, he was very familiar with the driving route from the island to the collapse area, and he was familiar enough to  The level is comparable to that of experienced drivers; thirdly, he can drive a Passat with a low chassis in the dark night from the southeast entrance of the subsidence area to the subsidence lake in the northwest, which shows that he has an unusual understanding of the topography of the subsidence area.  In this way, we can easily draw a conclusion: the suspect is a local and may have lived near the collapse area.

    After the trace inspection was introduced, Lao Xian began to introduce the physical and chemical inspection: "The car was seriously soaked in water, and many physical evidence could not be separated in the humid environment, so the items in the car did not meet the inspection conditions. Then I observed the car body. The collapse area  We have also seen the road surface. There are potholes everywhere. The Passat has a low chassis. Driving on this kind of road will definitely scratch the chassis. Ding Sheng¡¯s car is equipped with metal chassis armor, which is easy to form grooves after impact. Then I was in the groove.  A large number of soil crystal particles were scraped from the tank and chassis components. After testing, it was found that the particles contained heavy metals. This is a component that silt and ordinary soil do not have. This situation only occurs in those heavily polluted soil layers. Later I contacted  At the police station in the jurisdiction, police officer Pian'er told me that there was a chemical plant built in the northeast corner of the subsidence area, which was shut down due to serious environmental pollution." Lao Xian said, putting the electronic map of the subsidence area on the projector, "Look  "The entrance where the suspect drove is in the southeast corner, and the sinking lake where the body was found is in the northwest. There are three roads from the entrance to the place where the body was dumped, and none of them pass through the chemical plant in the northeast corner. The suspect must have his purpose in seeking the far away place."

    "It's very simple." Ming Ge said, "It is not difficult to see from the map that the southwest, northwest, and southeast of the subsidence area are all facing the street, while the northeast corner is only adjacent to an abandoned chemical plant. The entire subsidence area is only there.  The closed environment is the most suitable for killing people." (Remember the website address: www.hlnovel.com)Passing the chemical plant in the northeast corner, the suspect must have had his own purpose in seeking something far away.  "

    "It's very simple." Ming Ge said, "It is not difficult to see from the map that the southwest, northwest, and southeast of the subsidence area are all facing the street, while the northeast corner is only adjacent to an abandoned chemical plant. The entire subsidence area is only there.  The closed environment is the most suitable for killing people." (Remember the website address: www.hlnovel.com
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