latelenovela Chapter 1031 Following the Clues Discovered During the Scene Investigation
Chapter 1031 Following the Clues Discovered During the Scene Investigation
The two worked seamlessly, switching tools: Xiao Yang used a gas chromatograph to analyze the carpet fibers, while Xiao Sun used a scanning electron microscope to examine the pry marks on the door lock. "A Class B security door lock cylinder, the pry marks are clockwise, the tool head is 8 millimeters in diameter." Xiao Sun sealed the metal fragments into an evidence bag. "Composition analysis shows a carbon content of 0.6%, consistent with a high-hardness steel chisel." Xiao Yang suddenly tapped lightly on the bottom of the wardrobe: "There's a cavity reaction here."
Prying open the three-centimeter-thick wooden board, the safe in the hidden compartment was revealed. The surface of the safe was covered in chisel marks, and the numbers "7" and "9" on the keypad showed obvious wear. "There are signs of forced entry; the chiseling points are concentrated around the lock cylinder," Xiao Sun said, pulling up the safe's instruction manual. "This model requires three consecutive correct password entries to trigger the alarm. The perpetrator chose brute force, indicating they probably didn't know the password."
The investigation continued until noon, sunlight filtering through the broken windowpanes and casting dappled shadows on the blood-soaked ground. Xiao Yang held up a test tube containing fibers: "Two types of foreign fibers were found in the master bedroom carpet; one is polyester, and the other contains wool, possibly from the perpetrator's clothing." Xiao Sun pointed to the splattered blood on the wall: "The shape of the blood droplets indicates that the perpetrator returned to the scene twice during the attack; the second set of footprints covered the original footprints."
当最后一枚证物袋贴上标签时，李明在白板上画出时间轴：李丽凌晨2:17分拨打电话无人接听，而现场温度测算死亡时间在凌晨1:00-3:00之间。小王突然指向李丽的购物小票：“她声称23:45分买泡面，但张兵遇害前两小时就已离开便利店，这个时间差需要核实。“
As Xiao Sun was packing up his equipment, an unusual reflection suddenly flashed across the fiber sample under the microscope. He adjusted the magnification, and the trace amounts of white powder adhering to the fiber surface became clearly visible—alumina powder that only adheres to fibers under specific industrial conditions. Meanwhile, Xiao Yang detected fluorescent whitening agents in the fluorescent reaction of footprints in the entryway; the composition was exactly the same as that of a certain brand of laundry detergent.
As the police car drove away from the residential area carrying boxes full of evidence, Li Li suddenly grabbed Xiao Wang's sleeve, looking at the neighbor across the street with a terrified expression: "Brother Zhang Bing kept saying last month that someone was following him, and he even hid photos of his bedroom in... in his teddy bear keychain..." This sentence made everyone turn around sharply. Xiao Yang immediately pulled out the keychain from the evidence bag, unscrewed the back cover of the teddy bear pendant, and a micro SD card fell onto the investigation paper—it contained the video that Zhang Bing had secretly filmed of smuggling factory waste.
This is important evidence.
After daybreak, the body was transported back to the Criminal Investigation Division.
The stainless steel door of the autopsy room slowly closed under the action of a hydraulic lever, shutting out the noisy footsteps in the corridor. Zhang Lin hung a tag with "Zhang Bing 20240709" on the hook of the autopsy table. The cold white operating light illuminated the rolled-up wound on the corpse's neck, the dark red tissue like a blooming flower of evil. He put on double latex gloves, and the bone saw and scalpel in the metal instrument tray gleamed coldly under the light.
"The body is 178cm long, normally developed, and moderately nutritious." Zhang Lin began recording into the voice recorder, his fingertips tracing the stiff knuckles of the corpse. "The livor mortis is located on the back where there is no pressure, and it is purplish-red. It does not fade when pressed. The cornea is moderately cloudy, and rigor mortis has spread to all major joints. The preliminary estimate of the time of death is more than 12 hours." He lifted the corpse's eyelids and shone a flashlight into the pupils. "Both pupils are equal in size and round, with a diameter of 5mm, and no light reflex."
An assistant handed over a thermometer; the rectal temperature read 28°C. Zhang Lin opened his notebook and began calculating, comparing it to the constant 25°C indoor temperature: "Estimating a drop of 0.8°C per hour, and considering the degree of rigor mortis, the time of death can be pinpointed to 14-16 hours ago." He suddenly paused, using tweezers to pick up a fragment of skin from under the corpse's fingernails. "There's fresh tissue embedded here; send it to the DNA lab immediately for expedited processing."
As the scalpel sliced through the skin of the corpse's chest and abdomen, the blade made a soft, rustling sound as it rubbed against the subcutaneous fat. Zhang Lin precisely separated the muscles along the ribs, exposing the thoracic organs. "No pleural effusion on either side, no rib fractures." He severed the trachea, removed a lung lobe, and placed it on the measuring table. "Petechial hemorrhages are visible on the lung surface, resembling a marbled pattern, weighing 1200g, indicating the presence of mechanical asphyxiation."
The moment the dissecting scissors cut open the pericardium, coagulated blood mixed with fibrin spilled out. "There are bleeding points on the surface of the heart, and the blood in the heart chambers is dark red and flowing." Zhang Lin probed the coronary arteries with a probe. "No atherosclerotic plaques were found, and there were no myocardial infarction foci." He suddenly frowned, and used forceps to pick up a pinhole-like puncture wound on the right ventricular wall. "There is a fresh puncture wound here, about 1 mm in diameter and 2 cm deep. It may be a post-mortem injury."
When treating the fatal neck wound, Zhang Lin was extremely cautious. He used a probe to examine the wound along its direction, and gently separated the torn muscle tissue with forceps: "The wound was 15cm long, running obliquely, with irregular edges, and multiple skin flaps were visible, with one blunt and one sharp angle." Under a magnifying glass, the vital signs at the wound edges were clearly visible—subcutaneous bleeding and lymphocyte infiltration, proving that it was formed before death. "The murder weapon was a blunt object with a certain weight and irregular edges, which caused the trachea and esophagus to rupture due to repeated blows."
The stomach dissection provided crucial clues. Zhang Lin cut open the stomach wall, and dark brown chyme mixed with instant noodle residue poured out: "The amount of food residue in the stomach was about 200g, mainly undigested noodles and sausages. The food was intact, suggesting that the victim was murdered 1-2 hours after eating." He divided the samples and sent them for testing, "to test for trace elements and drug components in the stomach contents, focusing on ruling out the possibility of poisoning."
The screeching sound of the chainsaw cutting through the skull echoed through the dissection room as Zhang Lin removed the skullcap, exposing the brain tissue: "No subarachnoid hemorrhage, no contusion foci in the brain parenchyma, but..." He suddenly magnified the image under the microscope, "There are tiny axonal injuries in the frontal cortex, indicating that the head has suffered a violent shock, possibly from a fall or a blunt object blow."
In the seventh hour of the autopsy, Zhang Lin began examining the deceased's reproductive system. His rubber-gloved fingers probed into the rectum, removing a blood-stained condom: "Semen was detected inside the condom; proceed with DNA typing immediately." He turned to his assistant, "Contact the technical department to compare Zhang Bing's phone contacts with female phone numbers and check recent call records."
The final skeletal examination revealed more secrets. Zhang Lin used a bone saw to cut open the right femur and observe the medullary cavity: "The ratio of red bone marrow is normal, and the bone density is consistent with the characteristics of a 35-year-old male." Suddenly, he found a trace of healing from an old fracture in the left ulna. "This fracture occurred at least three years ago, and the X-ray showed poor reduction, which may affect the fine motor skills of the right hand."