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Whispers of the Dead · 3

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    After understanding the general situation, Brother Ming asked us to make preparations for the on-site investigation.

    The central site is a 3-story building with a courtyard, located at the northeast corner of Juren Community. On the north side is a wall, on the west side is a main north-south dual-vehicle road, on the south side is a Western-style building of the same style, and on the east side is next to the reported crime scene.  The residence of Wu Xiuju.

    The courtyard on the first floor is a rectangular structure, wide from north to south and narrow from east to west. The entrance is a red iron security door. The door faces south and has a cross lock cylinder.

    After Fat Lei fixed the location of the scene with a camera, I turned on the micro trace collector and started to observe the lock cylinder. With the injection of high-intensity light, the internal conditions of the lock cylinder were photographed on the external LCD screen.

    Fat Lei: "Xiaolong, there is obvious reflection inside the lock cylinder, and the lock has been tampered with."

    I have already noticed what Fat Lei said. If you want to know why the reflection inside the lock core proves that the lock has been tampered with, we have to start with the principle of key unlocking: every lock has a latch, which can  As the key is turned, it retracts into the metal groove of the door frame to prevent the door from being opened.  The expansion and contraction of the latch is controlled by a cam.  There is a row of small cylindrical pins inside the lock. When the key is inserted, the grooves in the key align the pins with each other and form a straight line.  In this way, the key can rotate freely, and the cam drives the latch to move to open or lock the lock.  If a key other than the original one is inserted, the lock will not open because the groove structure is different and the pins cannot line up.  There are multiple pins in each lock, and these pins are of different lengths. Even for the same lock, there are thousands of ways to arrange the pins.  Lock manufacturers can ensure that one key can only open one lock by changing the specifications and arrangement of the pins.

    When the lock is installed and used, a large amount of dust and oil will be brought in from the outside every time the key is opened. As the lock is used for a long time, the oil will gradually cover the entire lock core.  If you use the original key to open the lock, the key teeth and the pin will fit perfectly and there will be no scratches.  However, if you use a tool to pry it open, it is likely to scratch the oil stain layer inside the lock core, causing scratch marks; when a strong light is hit, the metal originally covered under the oil stain will reflect. As long as you see this on the collector,  The bright metal can basically confirm that the lock cylinder has been pried open.

    Knowing that the suspect had tampered with the lock, the lock cylinder must be disassembled for further analysis.  After confirming that there were no suspicious fingerprints left on the door, Pang Lei and I used a breaker to open the yard gate.

    When you enter the door, you can see that a blue and white color board room has been built in the northeast corner of the yard. A half-person-wide trail of blood extends from the color board room into the building. We can intuitively see that the room is only more than 30 square meters.  The color board room is also one of the murder scenes.

    In order to quickly open the on-site investigation channel, my second target was the brown security door on the first floor of the western-style building.  The door has an "A-level straight-shaped" lock cylinder. After observation with a micro-collection instrument, it was found that the lock cylinder has also been tampered with, but no fingerprints were left on the door surface.  The anti-theft door is the cheapest engineering door, and the lock core is very easy to disassemble. It only took 10 minutes. With a harsh "squeak" sound, the door was slowly pushed open, and a strong smell of blood rushed straight into the nose.  The scene in front of us made both Fat Lei and I stagger.

    "It's tootootootoo miserable" The tragic scene in the room made Fat Lei's tongue become knotted.

    I also shuddered, suppressing my nausea and began to observe the scene indoors.  The layout of the first floor is very simple, with the kitchen and bathroom on the west side, and the stairs leading to the second floor on the east side. There is a TV cabinet under the stairs, and a sofa and coffee table combination on the west side of the TV cabinet.  There is a running cabinet air conditioner in the northwest corner of the house, and a bottled water dispenser is placed behind the door in the southeast corner.

    There were three corpses lying on the reverse "7"-shaped fabric sofa, namely Shao Fen, Ge Mingyuan and Fan Fang. There were large blood stains at the feet of the three people. It was obvious that they had been moved here.  There was a wooden chair next to the sofa. Ge Liang was tied to the wooden chair with ropes. There were splatters of blood everywhere near the body.

    A wide footprint light was scanned, and no footprints were found on the tile floor. When I walked into the bathroom, there were several towels with blood stains floating in the sink on the left. It was obvious that the room had been carefully cleaned by the suspect.

    The trace inspection came to an end, and Brother Ming walked into the scene with Lao Xian.

    Brother Ming stepped on the pedal, walked around the body to observe, and said: "Corpse No. 1, Shao Fen, had a sharp injury to the front of the carotid artery, and two sharp puncture wounds to the heart. Corpse No. 2, Ge Mingyuan, had two sharp puncture wounds to the heart.  Injuries. Corpse No. 3, Fan Fang, suffered a sharp instrument injury to the left carotid artery and two sharp instrument puncture wounds to the heart. There were no splatters of blood or pools of blood at the feet of these three corpses. Their bodies were moved here after being killed elsewhere.  Corpse No. 4, Ge Liang, had sharp instrument injuries on both hands and wrists, and six puncture wounds on the heart. There were obvious splatters of blood andThere was a pool of blood in the living room. He was killed in the living room.  Ge Liang's feet were naked, with blood stains on the soles of his feet. There were a large number of messy bloody footprints on the ground. The suspect should have slit Ge Liang's wrists first, and then killed him after he struggled many times.  "

    "Is it just to vent your anger?" I asked.

    "The scene has not been inspected yet, so it's hard to say yet," Ming Ge pulled out the thermometer. "The indoor temperature is 15.5 degrees Celsius, which is not high. Don't move the body yet. We must seize the time to inspect the other rooms." (Remember the website address.  ：www.hlnovel.com
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