Shen Yaowei slammed the file onto Wang Chuanxing’s desk and said, "We’ve been waiting for half an hour, Brother Wang. Let’s get a move on. It’s really killing me."
"Is the suspect eager to die?" Wang Chuanxing joked. Seeing Shen Yaowei didn’t laugh, he shook his head and said, "Yao Wei, you’ve changed. You used to speak so nicely..."
Shen Yaowei pursed his lips, "I was a privileged person before, so I had to speak nicely. Now I’m a technical detective, I respect law and physics..."
"There’s something to that." Wang Chuanxing chuckled.
Nearby, there were detectives from Anwan City Bureau also queuing, overhearing their conversation, they looked over amused and said, "Others transition from law and physics to connections. Did you take the wrong path?"
"The path is made by people." Shen Yaowei saw it was an unfamiliar detective, so he just replied softly, thinking: Director Jiang likes it, who are you!
Wang Chuanxing printed a form for Shen Yaowei and said, "This case has been transferred to the South City District Bureau of Anwan City. Take this form, find their office for a stamp, and directly send the suspect to South City District Bureau. They also have their phone number at the office."
"Why was it downgraded?" Shen Yaowei was displeased. The suspect he had worked hard to capture deserved a higher-level police bureau.
Wang Chuanxing laughed: "Thought it was a few days ago? The current situation isn’t just good, it’s super good. Hurry up and go. When the district bureau fills up, suspects have to be sent out of the city!"
"Alright. Um... remember to call me for any search missions." Shen Yaowei was also eager to establish himself in the team as a "search expert." Just arresting suspects bitterly, although it doesn’t require much brainpower, really isn’t much fun.
Wang Chuanxing agreed naturally. With many cases being investigated, all kinds of needs will arise; search-type tasks aren’t few, and apart from Shen Yaowei, most people don’t like these tasks.
After quickly finishing the paperwork, Wang Chuanxing hurried to the laboratory. He still had to attend to Jiang Yuan, if he went late, Jiang Yuan might find someone else to serve.
Experts Liu Changhe and Lin An watched Jiang Yuan with anticipation as he enhanced images on the computer.
Their expertise was in fingerprint extraction technology, especially using different methods to bring out fingerprints — simply put, finding ways to make fingerprints glow and then extracting them.
This was naturally a very important technical means and one of the cores of fingerprint technology.
However, having obtained the fingerprint doesn’t mean one can find the suspect. This process requires complicated steps and superb techniques, otherwise, the two wouldn’t be rushing to find Jiang Yuan.
There are plenty of experts specializing in certain areas at the ministry, but the two of them can’t integrate these parallel resources to serve themselves. In contrast, Jiang Yuan, coming from the grassroots, had more comprehensive technology, akin to company technicians — in small companies, technicians often have to be all-rounders, while in large companies, technicians need to stand out with specialties.
Of course, a technician like Jiang Yuan, who is versatile and genuinely skilled, is rare in any industry, so even though Liu Changhe and Lin An were valued within the ministry, when they arrived in Anwan, they simply calmly accompanied Jiang Yuan in his work.
Now, they just wanted to use new technology to crack several major unsolved cases; everything else was unimportant.
Jiang Yuan was also recklessly trying new technologies.
After identifying six fingerprints in a row, Jiang Yuan cautiously yet boldly chose the major case "Cuiling 211."
This was a particularly heinous mass murder case that occurred six years ago on the morning of New Year’s Day. The herbal products buyer Zhang Guoyi and his family of four, including Zhang Guoyi and his wife, their 15-year-old son, and 68-year-old mother, were killed with sharp blades in their villa in Cuiling Town of Fangshan City.
Due to local customs, people don’t exchange visits on New Year’s Day, and only start visiting on the second day, so the bodies of Zhang Guoyi’s family were discovered on the morning of the second day.
It is widely known that during the New Year period, the frequency of revenge killings and mass murders is the highest. When the joyful laughter from enemies reverberates, one’s own anger will be stronger, more painful, and more undisguised than usual. And for those with premeditated intent to commit mass murders, the New Year period also provides a convenient timing.
Police naturally followed the direction of revenge and investigated. As an herbal products buyer, Zhang Guoyi traveled often among nearby villages, had several economic disputes and competitors, and was not a pleasant person, offending quite a few people.
After an investigation, they couldn’t find a suitable suspect. While the New Year favored revenge from enemies, it also enabled suspects to provide alibis; most people suspected were released home after just one round of questioning.
Thus this case became the first major unresolved case of the New Year, yet it remained unsolved. Subsequent investigations suggested the case was most likely a robbery-murder, but this conclusion made the case fade quicker.
Jiang Yuan chose this case partly because of the vicious nature of "Cuiling 211," a famous major unresolved case in Pingzhou in recent years, and still because the killer left some relatively blurry but distinct blood prints.
The blood prints mainly came from curtains and towels, which were common in knife murder scenarios.
Friends who have never killed may envision a clean and swift murder, leaving no trace when constructing cases. But when they really practice, they’ll realize that perfect scenarios are not easy, especially when killing four people; it tests the killer’s stamina – would your hands, covered in blood, be slippery?
Using a knife to stab someone, those who know how to conserve strength are masters.
Why do some knives have handguards set? If European swords have near-end defensive requirements, Chinese sword handguards are merely to prevent holders from sliding their fingers onto the blade or preventing the sword handle from being stabbed.
When people are excited, it’s easy to overexert. Killing is probably an extremely exciting situation.
On the other hand, victims stabbed or slashed, may initially be fearful, but when knives and swords cut in, struggles before death become inevitable; fighting over knives is also common.
Therefore, when actually using knives to kill, scenarios with blood on floors and walls often occur, fantasizing about wearing latex gloves isn’t realistic and might even lead to being counter-killed. Comparatively, the cotton gloves often used by forensic doctors might be slightly better.
However, after consecutive killings, for smart novice killers, after killing the second person, they should realize removing gloves and cleaning hands are very necessary.
Unfortunately, the Criminal Science team in Pingzhou couldn’t find the suspect’s fingerprint or DNA from the curtain and towel blood wipes on the crime scene. Tʜe source of this ᴄontent ɪs n͟o͟v͟e͟l͟f͟i͟r͟e͟.net
After carefully observing the case photos, Jiang Yuan felt quite hopeful.