Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Wang Shuai lifted the rusty lid of the freezer, and the scratches on the inner wall were clearly visible under the strong light. Liu Jianfeng suddenly laughed strangely, and the metal shackles slammed heavily on the edge of the freezer: "She hit it here when she kicked over the chair!" He pointed to the concave part of the inner wall, "The blood from the back of the head flowed down the drain hole, and I blocked it with a rag three times before it stopped." Yang Sen leaned over to check the drain, and the dried dark red marks were consistent with the blood type test results of the deceased.

"Li Kaijun is much more difficult to deal with than her." Liu Jianfeng turned and walked towards the safe in the corner. The fingerprint powder on the inside of the door had not been completely cleaned. He pushed the door open with his shoulder. In the dust, the spiral pattern of the internal wiping was vaguely visible: "When she was stuffed in, her hair got entangled in the lock." He suddenly moved closer to the safe, his nose almost touching the metal surface, "I smelled her shampoo, the same as when she was in Luofeng Village."

Lu Chuan noticed that Liu Jianfeng's pupils contracted violently, which was a typical stress response. When the suspect turned to the freezer to describe the process of strangling Li Kaijun, he deliberately revealed a corner of the autopsy report in the case file. The X-ray of the broken cervical vertebrae glowed blue under the cold light. "He woke up earlier than I thought," Liu Jianfeng's voice suddenly became hoarse, and his hands held the rope in the air. "Both hands were tightly grasping the edge of the freezer, and the metal debris embedded in the nails was..."

Yang Sen immediately raised the evidence bag. The metal material extracted from Li Kaijun's fingernails matched the material of the freezer perfectly. Liu Jianfeng suddenly squatted down, resting his forehead against the cold ground: "I shouldn't use brute force, I should carve it like jade" his voice was mixed with sobs, "carve slowly along the texture, so that his expression won't be so hideous"

On the way back in the police car, Liu Jianfeng suddenly spoke through the bulletproof glass: "I hid a carving knife in the ventilation duct in the southeast corner of the basement." He looked into the distance with empty eyes, "The blade is stained with Lili's blood, and the initials of our names are engraved on it."

Although the case has been investigated, to be honest, the investigation process of this case is quite difficult, especially at the crime scene, not much evidence was obtained, and it was impossible to directly hold the suspect responsible.

Therefore, the police were very passive during the interrogation process. If the on-site investigation had not finally found the decisive clues and provided irrefutable evidence, it would have been difficult to say whether the case would be successful, as the two suspects were quite uncooperative during the interrogation process.

In addition, there was no significant discovery in the surveillance near the crime scene. Although there were some clues, the suspects were able to make excuses. Although these things are evidence, they cannot be used as ironclad evidence. This is one of the most difficult parts of this case.

In the process of investigating criminal cases, even other theft cases or various violent crime cases, the difficulty of collecting evidence is one of the most important factors in determining whether the case will be successful in the end.

In some cases, it is clear that the person is the murderer, but due to lack of evidence, the murderer cannot be prosecuted and does not receive the corresponding punishment. There are actually many cases like this.

But no matter what, the final result of this case was good. Lu Chuan made a detailed report of the relevant situation to his superiors.

In the following period of time, everyone mainly sorted out the entire process of the case and fixed all the evidence. Cooperated with the interrogation of the two people and sorted out the relevant prosecution materials. But less than a week later, the Criminal Investigation Detachment received another report.

The heat wave in Haizhou City in late autumn was rolling, and a yellow cordon had been set up downstairs of Unit 12, Building 2, Jinyang Community. Lu Chuan stood outside the cordon, his eyes swept across the surrounding environment, and reports from various teams on their positions came over the intercom. With his order, a rigorous and orderly criminal investigation officially began.

Yang Sen and Yang Lin put on protective clothing, shoe covers and gloves, and carried their investigation boxes. They stepped over the threshold carefully like scientists entering a precision laboratory. The two formed a front-to-back formation, with Yang Sen in front, holding a laser pen, and Yang Lin following closely behind, holding a camera ready to shoot at any time. They moved close to the wall, and each step was precisely placed in the blank area planned in advance to avoid destroying any possible trace evidence.

"The body was located in the middle of the living room, lying on its back, with a fruit knife stuck in its chest." Yang Sen described softly to the law enforcement recorder, and the red dot of the laser pen fell on the chest of the deceased Wang Xuebing. "The deceased was wearing a dark shirt with many tears and blood stains on it." Yang Lin quickly pressed the shutter and took pictures of the body in its original state from multiple angles. The flash lights went on and off in the dim room.

The two followed the planned investigation route, with the body as the center, and gradually expanded the scope of investigation outward like an invisible net. Yang Sen took out the trace evidence brush and gently swept it on the floor around the body to collect possible trace evidence such as hair and fibers. Each sample was carefully sealed and labeled; Yang Lin took a ruler to measure the angle and range of the blood splatter, recorded the data in detail in a notebook, and took a three-dimensional schematic diagram of the scene.

At the entrance, a strangled golden retriever curled up in a corner. Yang Sen squatted down and carefully took out the bloody rag from the dog's mouth with tweezers and put it into a transparent evidence bag: "This should be used to control the dog. Take it back to the laboratory to test the fiber composition." He carefully checked the strangulation marks on the dog's neck, "The rope should be made of thicker nylon, and the force was evenly applied. The murderer has a certain amount of strength and experience."

Meanwhile, Wang Shuai and Zhang Hui had already started their visit. They first found Aunt Li, the nanny who reported the case. In the pavilion of the community, Aunt Li sat on a stone bench, still looking a little frightened. Wang Shuai handed her a bottle of mineral water and soothed her in a gentle tone: "Aunt, don't be nervous, tell me slowly, how did you find out this morning?"

Aunt Li unscrewed the bottle cap, took a sip of water, and began to narrate: "I come to clean on time at 8:30 every morning. Today, I used the key to open the door as usual, and I felt something was wrong as soon as I entered. The house was very quiet. Usually, the golden retriever would have rushed over when he heard the noise. I called Boss Wang a few times, but no one answered. I walked into the living room and saw him lying on the floor..."

Zhang Hui carefully took notes and occasionally interrupted to ask for details: "Were the doors and windows closed when you came in? Did you notice anything unusual?"

"The doors and windows were all closed, but the curtains on the French windows in the living room were open. Boss Wang usually likes to keep the curtains closed." Aunt Li recalled, "By the way, when I came, the shoe cabinet in the entrance was a bit messy, with several pairs of shoes scattered on the floor. I was too scared at the time and didn't think much about it." (End of this chapter)