Serious Crime Unit 1

Chapter 654 Traffic Accident (7)
After Jiang Yiming hung up the phone, he called everyone together to discuss how to deal with and find the kidnapper. Lu Yingying could take on an important role in this kind of case. She brought various bugs, trackers, audio analyzers and other instruments. Everyone was wearing plain clothes. Came to Cheng Xianguang's house.

The kidnapper's call came in at 15:31:32 this afternoon, and the call lasted only 5 minutes. The kidnapper also uploaded a picture of Lin Lihua's hands being tied to Cheng Xianguang's mobile phone to confirm that she was kidnapped.

Lu Yingying opened the picture and looked at it. In the picture, Lin Lihua's mouth was stuffed with black dough, her hands were tied behind her back with a red nylon rope, and she was sitting on the ground with her legs curled up. Her whole body occupied most of the picture, and it was impossible to see from it. Determine what kind of environment she is in from the picture.

This shows that the kidnapper is very cunning, because he does not want the police to obtain other information from the picture. However, Lu Yingying still sees that the floor has a pine pattern. It should be a pine floor, or an imitation pine floor. Then, Lin Lihua is most likely to be there. indoor.

The phone number the kidnappers called Cheng Xianguang was 17059225134. Jiang Yiming called the operator and asked them to help check the identity of the owner. The receptionist replied: The owner's name is Luo Feng, and Luo Feng is a second-year junior high school student. student.

Luo Feng used a children's ID card to buy a SIM card, which is a children's ID card.Children's ID card refers to a type of ID card that children under the age of 16 can apply for on a voluntary basis without age restrictions.Since children are still in the growth stage, their appearance will change with growth. Therefore, unlike adults, children's ID cards are valid for a shorter period of only five years.

This shows that after Luo Feng's cell phone was stolen, he did not report it in time and was activated a few months later. Therefore, it is almost impossible to investigate from this clue, and time does not allow. The kidnapping case was with the kidnappers. Time, time is life. Finding out where the kidnapper is one hour earlier and finding out where the kidnapper is an hour later will have completely different results.It can be described as the speed of life and death.

Lu Yingying tried to locate the kidnapper's cell phone, but was unable to locate it. The kidnapper still used a signal jammer to hide herself. She could only track the kidnapper's location when he turned on the phone to make a call.This made everyone anxious.

At 18:23:12 in the evening, Cheng Xianguang's cell phone rang. Lu Yingying had already installed the recording equipment and locator. Before that, she had repeatedly told Cheng Xianguang to talk to the kidnappers more and try to extend the call time. , in order to accurately locate the kidnapper.

After Cheng Xianguang's cell phone rang five times, Lu Yingying signaled him to answer it, and then turned on the speaker so that everyone could hear the call.

"Chengxianguang, are you prepared for the money?"

"Not yet, I don't have that much money in my account..."

"Don't talk nonsense, I know you have at least 30 yuan in your bankbook."

"Really not. I am borrowing money from friends and calling around. My wife and I are both workers. Our combined monthly salary is only 8000 yuan. In addition to paying off the mortgage, supporting my daughter's education, and living expenses, one person You can only save up to 1000 yuan per month..."

"It seems that your wife's life is not worth 30 yuan, so just wait and collect the body!"

"No, no, no, no, please give me a little more time. I'm making preparations. I promise to hand over the money to you tomorrow evening. The bank is already closed at this time. Even if my friend is willing to lend me money, I can't get the cash. At least I need to Wait until noon tomorrow..."

"Okay, I'll give you another chance. If I can't get the money before 12 noon tomorrow, you can come and collect the body." After that, he hung up the phone. The call lasted for a total of 2 minutes and 40 seconds.

"Yingying, how are you? Are you positioned?" Jiang Yiming asked.

"It cannot be located. The kidnapper's mobile phone should have been called from a pseudo base station. The kidnapper is a master and knows our methods of handling cases very well. He uses various techniques to evade our attacks." Lu Yingying felt inexplicable pressure. This meant that Cheng Xian Light may not trust them.

Pseudo base stations are fake base stations. The equipment generally consists of a host computer and a laptop or a mobile phone. By pretending to be the operator's base station, it uses other people's mobile phone numbers to forcibly send short messages such as fraud and advertising promotions to users' mobile phones.Criminal suspects usually place "pseudo base station" equipment in cars, drive slowly or park the car in a specific area to conduct text message fraud or advertising.So it's difficult to locate and track.

"Can you identify the kidnapper by his voice?"

"No, listen -" Lu Yingying pressed the play button of the recorder and replayed the conversation between Cheng Xianguang and the kidnapper, "The kidnapper's voice is very similar to what we usually call 'electronic music'. The voice of the robot was actually produced by a computer synthesizer, and the kidnapper’s voice was transmitted through a voice changer, making it impossible to tell who spoke it.”

"Does it mean that the kidnapper cannot be identified through the voiceprint?" The so-called voiceprint is the sound wave spectrum carrying speech information displayed by electroacoustic instruments.Voiceprints are not only specific, but also relatively stable.After adulthood, a person's voice can remain relatively stable for a long time.

Experiments have shown that no matter whether the speaker deliberately imitates the voice and tone of others, or speaks softly in a whisper, even if the imitation is perfect, the voiceprint will always be different.Based on these two characteristics of voiceprints, investigators can compare the obtained criminals' voiceprints and the suspect's voiceprints through voiceprint identification technology, quickly identify the criminals, and provide reliable evidence for investigation and solving cases.

However, it is almost impossible to identify the voiceprint of the sound transmitted by the voice changer, because it has changed the physical properties of the sound, such as timbre (timbre), pitch (corresponding to pitch), sound intensity (loudness of the sound), and sound length (corresponding to The speed of the sound) has changed.

"Mr. Cheng, you are not a rich man, and you are not even considered middle class. Why did the kidnappers kidnap Lin Lihua? Do you have enemies? Or have you offended someone?" Jiang Yiming asked Cheng Xianguang, who was walking around restlessly.

"I don't know either. The kidnapper is really blind and mentally retarded. I never dreamed that he would kidnap my wife." He replied weakly. It seemed that he had a deep love for Lin Lihua. "I can tell you with certainty that the kidnapper is not a mentally retarded person. He has a very high IQ, can use various network and information technologies, and has strong anti-investigation capabilities. Such a capable kidnapper will never care about 30 Yuan, I think the kidnapper should be an acquaintance or friend of you and Lin Lihua, and his purpose is not for money."

"Not for money? What's that for?"

"For example, who have you offended? Think about it carefully. This is very helpful to us and is also a way to save Lin Lihua."

"No, I can't remember. We are an honest and responsible couple. We fell in love and got married freely. We gave birth to a daughter soon after our marriage. In order to let our daughter live a good life, my wife and I shared the joys and sorrows. I have been working at Duomi Amusement Equipment Manufacturing Factory for 10 years. Unless I am sick, I never ask for leave. I run back and forth between the factory and my home every day. I rarely go out for entertainment and consumption. I also have a very harmonious relationship with my colleagues and have never quarreled with anyone. Fight." He thought as he spoke, as if he was afraid of saying the wrong thing.

"So you can't have enemies?"

"Yes, it is absolutely impossible to have enemies!"

"If you think about it calmly, you are very excited now and are thinking about how to save Lin Lihua. I can assure you that we will definitely arrest the kidnapper."

"If the kidnappers break up, it doesn't make much sense to me to arrest the kidnappers."

"We are [-]% sure to rescue Lin Lihua and go home. Don't worry. If we can't do it, I don't think you can rescue her with your own strength. Please believe me." Jiang Yiming looked at He was still upset, so comfort him.To be honest, even the most powerful police in the world cannot guarantee that the kidnapped person returns home alive.

"Okay, I listen to you. Let me think about it again, who would kidnap my poor wife." After saying that, he squatted on the ground, held his head in his hands, and began to think deeply.

Jiang Yiming felt that Cheng Xianguang didn't tell him the truth, or that he had something to hide.

At this time, the door rang, which was the sound of a key being inserted into the keyhole. Xiao Ke glanced at Jiang Yiming and hid smartly by the door, wanting to see who was coming.The door opened, and a girl about 10 years old walked in carrying a schoolbag and asked: "Dad, why don't you pick me up at the bus stop?"

Cheng Xianguang quickly ran up, hugged her tightly and said, "Baby, I'm sorry, I forgot. Dad is too busy today."

"What about my mother?"

"She...she went on a business trip."

"Why are there so many people in our family?" Her face was round and glowing with a healthy red color.

"Oh, they are all my father's colleagues. Don't be afraid when they come to our house as guests." Cheng Xianguang comforted her by stroking her cheek.

"Kid, can my sister take you to McDonald's?" Lu Yingying came over and wanted to hug her, but she avoided it.

She slipped to the ground, put down her schoolbag, opened the zipper of her schoolbag, took out a test paper and said to Cheng Xianguang: "Dad, I got 100 points in the math test. You said that I will be rewarded if I get 100 points in the math test..." After that, , unfolded the examination paper, and then a letter fell to the ground.

Lu Yingying realized something was wrong and immediately knelt down to pick up the letter and asked: "Kid, who gave you this letter?"

"I don't know, how come there is a letter?" she asked herself with bright eyes.

"Can I open the letter and read it?"

"Yes." She nodded, walked to Cheng Xianguang, and held his hand tightly.

(End of this chapter)