Ning Zhiyuan didn't answer, and walked out of the courtyard quickly. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 info Yu Shirley stood at the door until the car turned a corner and disappeared, then turned around and entered the house.

Back in the office of the special case team, Ning Zhiyuan gave Fang Jianye the kidnapper's phone number displayed on Fu Xiaofan's mobile phone and asked him to investigate. He took out his mobile phone again and said, "Mingming, let's go, go to the studio and listen to the recording." ”

There is a complete set of audio analysis instruments in the studio, and Shi Mingliang first transferred the recordings from his mobile phone to the instruments and played them several times, and then began to conduct technical analysis of the sound.

During the interval of waiting for the instrument to be analyzed, Shi Mingliang asked: "Didn't you bring recording equipment, why did you still record this with your mobile phone?" "The kidnapper's second call went directly to Fu Xiaofan's mobile phone, and he didn't make a landline call." Ning Zhiyuan shrugged his shoulders, "The kidnappers know that we are at Fu Xiaofan's house, which is very suspicious. ”

"Yes," Shi Mingliang said, touching his chin, "you have only been there for a few hours, how will the kidnappers know that you are here?" Is there an inner ghost? ”

"I have that suspicion too." Ning Zhiyuan thought about it and said, "The kidnapper's first call was from a landline, and he threatened not to call the police. It means that he didn't know that we had gone at that time. The second call was about three hours away from the first, and among the three hours, Su Ziming left first, and Su Zhengping was the second. Yu Xueli and Chen Feng went to Yu Xuedong's room once, and Zhang Wei was always there in the living room. After we came down, Fu Xiaofan, Mrs. Yu, and the nanny Xiaofen were still in the living room. None of these people have ever gone out. ”

"That means that Su Ziming and Su Zhengping's father and son are the most suspicious." Shi Mingliang raised his eyebrows, "If any of them are related to the kidnappers, they have time to talk to the kidnappers and tell him about the situation in Fu Xiaofan's family." "It's hard to say," Ning Zhiyuan said noncommittally, "You do the sound analysis first, and I'll check their information." ”

Ning Zhiyuan entered the household registration system of City D and called up the personal information of the Su family's father and son. Su Ziming, 51 years old, is a senior accountant and worked as a certified public accountant in a well-known accounting firm in City D. Seven years ago, he was hired by Omni Hotel Group as the chief financial officer. When Su Ziming was thirty-eight years old, his wife died of illness.

Su Zhengping, 26 years old, studied international trade at a university of economics and trade in other provinces, studied abroad after graduating with a bachelor's degree, returned to China two years ago, and now works as a business manager in a foreign trade company. He was detained for dangerous driving last year, but he has no previous criminal record.

"Team Ning, this number is also a network virtual number." Fang Jianye entered the office from the outside. "Well, I already expected that." Ning Zhiyuan handed him Su Zhengping's file, "You go again, go to the traffic management to find out the specific reason why Su Zhengping was detained last year, and it is best to bring back a copy of the file at that time." ”

After Fang Jianye left, Ning Zhiyuan entered the studio again. Shi Mingliang played the recording again: "Team Ning, don't you think this recording is a bit strange?" "Well," Ning Zhiyuan nodded, "At first glance, it doesn't seem to be anything special, but if you listen carefully, it seems that there are some places where the connection seems to be a little problematic." ”

Shi Mingliang played a passage from the recording several times: "This is it, it sounds more obvious after being stripped away." "Yes, this is it." Ning Zhiyuan said, "After Yu Xuedong called his mother for the last time, the phone became the voice of a kidnapper, and Yu Xuedong's voice disappeared completely, even if his mouth was covered, he would make some sounds like 'hmm', it was impossible to disappear completely!" ”

"The sound stops here," Shi Mingliang said, pointing to the audio curve chart on the computer, "There are two possibilities, one is that Yu Xuedong's voice was recorded in advance, the kidnapper originally used an Internet phone, and he also used a voice-changing device, his voice was completely transmitted through the computer, and Yu Xuedong's words were stored in the computer in advance, and they could be sent out as long as they clicked play." Another possibility is that Yu Xuedong shut up and stopped talking after shouting 'Mom', so his voice did not coexist with the kidnapper's voice. ”

Ning Zhiyuan pondered for a moment: "If it's the first case, then when the kidnapper calls, it's very likely that Yu Xuedong is not around, so it may be uncertain whether he is safe now." If it's the second one......"

"What if it's the second option?" Shi Mingliang scratched his head and asked, "Coerced?" Don't dare to speak out again? "It's not that simple," Ning Zhiyuan waved his hand, "However, this kidnapping case is not that complicated. ”

Shi Mingming looked at Ning Zhiyuan inexplicably: "Team Ning, why do you say that the more you talk about me, the more confused I become?" Ning Zhiyuan smiled: "There are some things that I haven't sorted out yet, I'll tell you when I've figured them out." ”

At about three o'clock in the afternoon, Fang Jianye came back from the traffic management office, and as soon as he entered the office, he said: "Team Ning, Su Zhengping was detained for participating in underground drag racing." This kid had a history of drag racing when he was abroad, and last year the traffic management office received a report that someone in the outer ring organized drag racing at night, and they controlled it in time and arrested some people, including Su Zhengping. ”

"There must be a bet on drag racing," Shi Mingliang raised his eyebrows, "Could it be that Su Zhengping lost and had no money to repay his debts, so he kidnapped Yu Xuedong with them?" "I was thinking about that on the way back just now." Fang Jianye nodded and said, "I heard that the stakes for underground drag racing are quite large, and there are all kinds of bets, and you can bet on anything." ”

Ning Zhiyuan thought for a while and said, "Mingming, print a copy of the audio analysis results to me." I'll go to Fu Xiaofan's house in a while. The two of you should hurry up and get the closing report of Qiu Wenqiang's body shredding case and hand it over to the procuratorate as soon as possible. ”

"Su Zhengping, don't you need to check?" Fang Jianye asked suspiciously. "Don't be in a hurry first," Ning Zhiyuan waved his hand, "It's too late to investigate after the case closure report is ready." Fang Jianye didn't understand, the kidnapping case was imminent, why didn't Ning Zhiyuan seem to be in a hurry? Shi Mingliang handed the analysis results to Ning Zhiyuan, glanced at Fang Jianye and said, "Team Ning naturally has his plans, let's finish the case closure report first." ”

Ning Zhiyuan first drove to the business hall, and then returned to Fu Xiaofan's house It was almost evening, because Fu Xiaofan had already greeted the security guard on duty at the door before, and this time Ning Zhiyuan entered the park smoothly without being interrogated.