Chapter 7 Serial Murder Case Cai Chengyong’s home was not the crime scene. …
Not a crime scene?
Shen Qingye frowned, looking at Wei Zhengyi who looked extremely sleepy. He didn't ask anything else, but just said, "Have you eaten?"
"No." He rubbed his stomach with a bitter face: "I was so busy last night that I didn't eat much. I'm starving."
Shen Qingye said: "I have something in my drawer, would you like to have some?"
Wei Zhengyi's eyes lit up when he heard this, and he nodded quickly: "Okay, okay."
Seeing him like this, Shen Qingye couldn't help laughing and turned around to get out a bunch of snacks.
Wei Zhengyi cried out when he saw this, and immediately rushed over, opened a bag of biscuits and stuffed them into his mouth. The mellow taste blossomed in his mouth, and he couldn't help but burst into tears: "You don't know, we don't even have water in the office. I'm almost dying of thirst."
Shen Qingye was speechless when he heard this, and turned back to pour him a glass of water.
Wei Zhengyi squatted in the corner, eating voraciously. Shen Qingye stood beside him. After hesitating for a while, he squatted beside him and couldn't help asking, "What's going on with this case?"
Wei Zhengyi stuffed two bags of biscuits and a few bars of chocolate. He was no longer hungry. He swallowed his saliva after hearing this, wiped his mouth and said:
"It started in October of the previous year. A fisherman caught a bag of something in the river. When he opened it, he found it was a bag of minced meat. He was so scared that he called the police. The police found that it was a bag of human flesh and immediately opened a case for investigation. However, because it was cold at the time and the body had been soaked in the river for such a long time, the information on the body had long disappeared and nothing could be found. In the end, it became an unsolved case.
"Then from March to September last year, three more similar cases were discovered one after another. After investigation, it was found that the method of dismemberment and the location of the bodies were similar to the first case, so the first case was also included in this series of cases. And because the dismembered bodies of the next three cases were all found after rainy nights, this series of cases was called the Rainy Night Serial Murder Case."
Wei Zhengyi sighed, "Because these cases are so brutal, they have attracted the attention of the higher authorities, who ordered us to solve the cases quickly. Captain Qin and his forensic team have been busy for more than a month and found that all the victims had signs of being violated before they died. But the murderer was too cautious and seemed to have cleaned the bodies after killing them. In addition, each crime was committed on a rainy night, and under the heavy rain, there were no clues at all."
He spread his hands and said, "There has been no progress in the case for more than two months."
Shen Qingye asked: "Then didn't you try to investigate from the victim?"
Wei Zhengyi shook his head. "How could there be none? As early as the beginning, a missing persons notice was issued throughout the city, asking people to report missing persons in the surrounding areas immediately. Some people did report the case, but either the time of disappearance did not match the time of death, or the DNA test did not match. Anyway, so far, none of these bodies have been identified."
"Then how were we able to find the clues later...?"
Wei Zhengyi said, "It was during the fifth case. When we received the report, we immediately started investigating and looking for people around the place where the body was dumped. Finally, an uncle who raised fish provided the clue."
"It rained heavily all night that day, and he was worried that something might happen to the fry he had just put in, so he got up in the middle of the night to check, and he saw a white van passing by in the rain. He was surprised at the time, thinking that it was only one or two o'clock, and it was raining so hard, who would still be hanging around outside? The next day, he learned that a bag of body parts was found not far away, and the direction the van left was exactly that place.
"We followed the clue of the van and eliminated some that were obviously inconsistent. We then used luminol reagent to test those cars one by one, and finally detected blood stains containing the deceased's DNA in one of the cars.
"We didn't even have time to be happy when another problem came up." Wei Zhengyi said helplessly, "That car is a factory bus, usually used to transport goods, and many people have driven it.
"But fortunately, the management of that factory is relatively standardized, and all cars in use are registered. We checked them one by one according to the registration list, and the final result was, haha, none of them met the requirements." When he said this, he almost laughed out of anger.
Shen Qingye felt a little sad when he heard this.
"In the end, we had no choice but to start from the beginning. Since there were no problems with the used cars, we would go find those that hadn't used the cars.
"Because everyone in the factory said that the car was usually there in the morning and they had never seen it before. And the murderer usually committed crimes at night, so we speculated that the murderer took advantage of the factory after get off work when no one was there and drove the car.
"But the factory has a gate, which is locked every night, and there is no sign that the lock has been pried open - so who could have gotten through the gate to drive the car?"
Shen Qingye's heart moved:
"Gatekeeper." Wei Zhengyi took a sip of water and continued, "According to the factory manager, the gatekeeper is the first one to arrive at work every day because he is responsible for opening the factory gate. In other words, the gatekeeper has the key to the gate.
"So we naturally found out about Cai Limin.
"But when we actually met Cai Limin in person, we felt something was not right. Because Cai Limin himself is already fifty-three years old. It's not that it's impossible, but relatively speaking, serial killers tend to be younger. People in their fifties have a relatively stable life and their personalities are set, so there's no need to take such a big risk to kill someone. In addition, Cai Limin himself is known as a gentle, honest, good man by his neighbors, and he doesn't have many enemies, so our suspicion of him was reduced a little bit—"
Hearing the words gentle and honest, Shen Qingye couldn't help but blink and said, "That's hard to say."
Wei Zhengyi paused after hearing this, then smiled: "I know, the boss told us about the case yesterday, right?"
He gave her a thumbs up and praised her, "You are really amazing. I have been in the team for two or three years, and I have never encountered a murder case that can be solved in a few hours. It is really thanks to you."
Shen Qingye said: "You are really exaggerating. Even without me, Captain Yue and his men would have found the clues sooner or later. I was just a little luckier."
Wei Zhengyi shook his head and said seriously, "That's not the case. If you hadn't noticed something was wrong in time, we would have wasted so much time looking for clues after we had interrogated Lin Xiaofeng. What if Li Dazhi noticed the footprints on the air conditioner and cleaned it up? What if he ran away out of guilt? For a murder case like this, time is of the utmost importance. No one knows what the consequences will be if we delay for a while.
"That's why I say you are really amazing."
When Shen Qingye heard this, his expression paused, and he pursed his lips and remained silent for a while.
Wei Zhengyi smiled and changed the subject again: "After all, the suspicion is on Cai Limin, and we can't handle the case based on our subjective feelings. We still have to believe in the evidence. But since it is unlikely that Cai Limin committed the crime, is it possible that someone close to him was involved? We followed him and finally found his son, Cai Chengyong.
"Cai Chengyong is 23 years old and works in a pork factory. He is tall and strong, and is fully capable of committing crimes. We also visited the Cai family's neighbors and learned that Cai Chengyong was very obedient and sensible when he was a child, but after his mother ran away with someone when he was eight years old, he began to change. He didn't study hard, and when he was in his teens, he became a gangster on the street with those low-class people. He ran around everywhere all day, which made Cai Limin very worried. Later, when he grew up, Cai Limin found him a job in the pork factory. In the past few years, he has gradually become more stable."
He paused, and then continued, “Moreover, according to our investigation, perhaps because he was abandoned by his mother when he was young, Cai Chengyong has some misogynistic tendencies. Many people have heard him make similar remarks.
"With the ability, motive, and access to the van, Cai Chengyong became our number one suspect. When we went to arrest him yesterday, as expected, we found his privately-made van key at his home. We arrested the father and son and interrogated them overnight. But, alas..."
Wei Zhengyi sighed again: "Cai Chengyong and Cai Limin confessed to stealing the van with a duplicative key, but they refused to admit to the blood in the van and the murders."
The trace investigators did not find any relevant evidence in Cai Chengyong's home, and the case came to a standstill.
Shen Qingye fell into deep thought.
Wei Zhengyi was quite open-minded. He patted the biscuit crumbs that fell on his clothes and said with a smile, "Hey, it's okay. Just wait and see who can outlast the other."
Shen Qingye looked up at him after hearing this, and said nothing more, but smiled and said, "Have you finished eating? I have more."
Wei Zhengyi touched his stomach, scratched his head and smiled: "I'm almost done, but if you have any more, you can give me some more. Brother Jiang and Brother Qiming are still wasting time over there."
Shen Qingye's feet were a little numb from squatting, so she stood up slowly and said, "Wait for me for a moment."
After a while, she came over with another bag. Aunt Chen was afraid that she would be hungry while working, so she often prepared some delicious and convenient snacks for her. The snacks accumulated over time almost filled up a drawer.
Wei Zhengyi thanked him quickly, cheered himself up, and ran to the interrogation room again.
When the door opened, Jiang Cheng and Zhou Qiming both looked over. The man sitting on the interrogation chair just moved his eyelids without any emotion.
Wei Zhengyi glanced at Cai Chengyong, then looked away: "Brother Jiang, Brother Qiming, let's eat something."
Zhou Qiming said, "Did you go out and buy it?"
Wei Zhengyi said: "No, Xiao Shen gave it to me."
The two were already hungry after staying up all night, so they didn't hesitate to grab a bag of bread and started eating.
I don’t know how the bread was made, but it tasted delicious and smelled very tempting. Cai Chengyong, who had been hanging his head, finally moved. His narrow eyes slowly opened, his lips were dry and chapped, and his voice was a little hoarse: "I say, police comrade, when can I leave?"
Wei Zhengyi sneered: "Wait until you have explained everything clearly, then you can leave."
Cai Chengyong chuckled and leaned back casually, causing the handcuffs on his wrists to rattle. He tilted his head, raised the corners of his eyes slightly, and said with a look of contempt: "Comrade police, I have confessed everything I can. It was not something I did, and you cannot force me to admit it."
Wei Zhengyi slammed the table, glared at him, and was about to speak, but Jiang Cheng held his hand, swallowed the bread, and said, "Don't worry about him."
This person is very meticulous and has excellent psychological quality. It is useless to interrogate him against ordinary criminals. In that case, there's no need to waste time with him.
Let it air out, maybe it can be of some use.
"Let him speak."
Wei Zhengyi glanced at him, snorted coldly, and looked away.
Seeing that they were eating by themselves and really ignoring him, Cai Chengyong's smile gradually faded and a layer of gloom appeared in his eyes.
·
It's still early and we won't be at work until a while. Shen Qingye sat in his office, looking at the documents, but his mind was always absent-minded.
She rubbed her forehead, hesitated for a long time, and finally stood up and found the information of several previous cases in front of the file wall.
The thick files were spread out on the table one by one. Shen Qingye read through them from the beginning and found that the details were similar to what Wei Zhengyi had said. The first case in October of the previous year and the four consecutive cases last year, as well as the police investigation results and forensic autopsy results are all included. Because the body was too broken and the information was limited, it was indeed impossible to draw any other conclusions.
Shen Qingye tapped the table with a pen in his hand and slowly fell into deep thought.
The current deadlock is that the murderer was extremely cautious in his crime and there was no useful information on the victim's body; and Cai Chengyong's home was also unusually clean and no signs of murder were found.
If we really want to count it, he can only be held responsible for making duplicate keys and driving a motor vehicle without authorization.
In order to convict him, we have to find more crucial evidence, which is the first crime scene.
Shen Qingye flipped through the document quickly, tapping his finger:
The first body parts were found in the river at Liujiagou in Baofang County;
The second body was found in a forest on the outskirts of Huilin County;
The third one is located at the border of Yizhuang County and Hedong County;
The fourth one, Baoxian County...
The fifth one, Guning County...
At a glance, these places have no connection at all. The only characteristic is that the places where the bodies were dumped are very remote.
Baofang County, Huilin County, Guning...
Shen Qingye suddenly remembered something, and quickly stood up to find a detailed map of the city, and circled and pointed at those places with his fingers -
These county towns are all around the city, about an hour's drive away, and their geographical locations are all in the south!
The factory where Cai Liming works is located in the south-central part of the city. That area is a factory concentration area, but it is not too far south. Assuming that Cai Chengyong drove out of the factory, then no matter which direction he went, the time he spent leaving the city was almost the same. Why were several body dumping locations chosen in the south?
But what if he was disposing of the body in the south? Then we can only dump the body nearby. Otherwise, I would have to drive from the south to the north of the city to dump the body, and then come back from the north of the city, and park the car safely in the factory before the workers came to work. It would take too long to go back and forth.
Only in the south of the city could he be guaranteed enough time to go back and forth.
South of the city, south of the city...
What's in the south of the city?
Shen Qingye found another detailed administrative map and looked at it. He swept his finger over the places where the bodies were dumped, and his eyes suddenly paused.
Baofang County...Caipo Village?
Cai Chengyong, Cai?
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