Serious Crime Unit 1

Chapter 625 Reappearance of Skeletons (9)
The cellar is about 180 centimeters deep, and there are 8 steps made of bricks leading to the cellar. Zhou Ting used a wooden stick to push aside the spider webs at the entrance of the cellar and walked into the cellar.

The cellar is not big, about 3.5 meters long and 2.5 meters wide. There is a wine cabinet made of hardwood inside, which is covered with dust, which may have fallen on it when Chiye demolished the house.Dozens of empty wine bottles were piled in the front of the cellar, and there were signs of wine storage on the wine cabinets.

Yang Wanjun said that Li Xiaoxin liked drinking wine very much. This should have been dug specifically to store wine. Maybe the treasure map was hidden in it. Otherwise, Chi Ye would not have been able to tear down all the brick walls.

There were two clear shoe prints on the ground. They squatted down, took pictures with their mobile phones, and then observed carefully. The two shoe prints were both size 42. One of them was left by sports shoes, and the other was Leather shoes left behind.Jiang Yiming thought they were the shoe prints of Chi Ye and He Wendong, because the size and gait of the shoe prints were very similar to those of them.

This shows that Chiye and He Wendong came to the cellar at the same time, because their shoe prints were cross-printed on the ground. If they came to the cellar back and forth, one shoe print would definitely cover the other.Since they obtained the treasure map at the same time, why did they go to Minghuang Valley to dig diamonds one after another?
They felt that the biggest suspect was Yang Wanjun, because the murderer of Chi Ye was a tall man and wielded the knife with great strength, but what tricks did he use to prove his absence?
Returning to the criminal police team, Jiang Yiming explained the situation to everyone and asked everyone to use their brains to think about how Yang Wanjun managed to hide the truth?
"Captain Jiang, could it be that the surveillance systems of New Century Building and Garden of Fame were hacked and the surveillance videos were forged?" Lu Yingying said.

"Isn't this possible? Zhou Ting and I not only checked the surveillance video on the 18th floor of the New Century Building, but also the video in the elevator, lobby, entrance, and opposite the building. How could such a powerful hacker be able to tamper with the video in so many places? ?" Jiang Yiming shook his head.

"Team Jiang and I not only reviewed the surveillance video of Cao Deyang's elevator, but also checked all the videos at the entrance and exit of the Honor Garden and around Cao Deyang's building. Therefore, I don't think any hacker has the ability to hack the videos in so many places. ." Zhou Ting said.

"Yang Wanjun's receipt of 60 yuan in cash is also very strange. He may want to get to know Chi Ye and He Wendong, and remember their faces so that he will not kill the wrong person in the dark Minghuang Valley. Or, he wants to secretly photograph him Give photos of the two of them to the hired killer so that he can remember the murder target."

"In short, Yang Wanjun is the most suspected of murder. How about we summon him to the criminal police team and lock him up for 24 hours?"

"If there is no evidence, even if he is imprisoned for a month, I don't think he will take the initiative to confess that he killed someone. After all, he has to pay with his life."

"We can give him a lie detector test. It should be difficult for him to escape the lie detector test, right?" Lu Yingying suggested.

"Polygraph detection is not the best method, but we can try it. If we find that he lied, we will look for clues, otherwise we will let him go." Jiang Yiming finally decided to do this.

When Jiang Yiming and Zhou Ting handed the summons to Yang Wanjun, he was very angry: "You have reviewed a large number of surveillance videos to prove that I am not at the crime scene, why are you still summoning me? Don't my parents suffer enough when they die?" Really? Are you still coming to torture me?"

"I'm sorry, you have a major motive for murder and must cooperate with our work because we suspect that you hired a murderer to kill someone, so your alibi is useless." Jiang Yiming said seriously.

"I'm going to call my company's lawyer, otherwise, I won't go to the vice squad."

"Fight, this is your right. I believe the lawyer will advise you to cooperate with our work."

Yang Wanjun didn't believe it. He took out his mobile phone and made a call. The lawyer told him to cooperate with the police first. He then went to the criminal police team to inquire about the situation and persuaded him that as long as he had not broken the law, there was no need to worry. Now that the law has been gradually improved, people should comply with suspicion. The policy of innocence.

Yang Wanjun seemed relieved. He nodded to Jiang Yiming and said, "Let's go. I have not broken any laws. Even if I go to the Hall of the King of Hell, the King of Hell will not accept me."

"This is a good law-abiding citizen!" Jiang Yiming responded with an encouraging smile.

Lu Yingying conducted a polygraph test on Yang Wanjun. In September 2015, the municipal bureau hired a professional polygraph examiner named Wei Wei. He was a top student in the Psychology Department of the Provincial Criminal Police College. He was born in 9. He has a formidable background. He is already so young at such a young age. Obtain certification as a polygraph examiner.

The lie detector room is specially designed.The overall tone is mild and light, and the walls are soft.The soft texture not only makes people relax easily, but also prevents people being tested from hurting themselves.In addition to the long table and two armchairs, there are two single sofas and a coffee table in the room, creating a more relaxed conversation environment in the room.

The front wall connected to the table is made of mirrors, which through reflection make this windowless room bright and soft.The mirror is also specially made. Just like what we have seen countless times in movies, it is a single-sided glass.For the next room, this is a glass through which every corner of the polygraph room can be seen clearly.

The palm-sized machine on the table is the main unit of the lie detector. There are various interfaces on the outside of the rectangular box.During lie detection, these interfaces will be connected to the respiration sensor, pulse sensor, skin electrode sensor, and blood pressure sensor respectively.These sensors are nothing fancy and look almost identical to medical devices.

After these common things are connected to the host, the physiological reactions caused by the psychological changes of the test person are converted into curves and displayed on the software interface.Lu Yingying assisted Wei Wei in detecting Yang Wanjun's polygraph. Lu Yingying used to be the polygraph examiner. However, she is not a professional polygraph examiner, nor is she a psychology major. Therefore, the polygraph questions and results are not very accurate. Therefore, , she took the initiative to ask Fang Lihua to hire a professional lie detector, which could reduce her work and allow her to focus more on computers and the Internet.

Wei Wei gave Yang Wanjun 50 questions. He talked to Yang Wanjun like a friend, which could reduce Yang Wanjun's psychological pressure. Yang Wanjun only had to answer yes or no, and the questions were relatively simple.It took them 3 hours, and the results proved that Yang Wanjun was not lying.

This result puzzled everyone. Xiao Ke said: "Yingying, Yang Wanjun has a very high IQ. Will he deceive the lie detector?"

"Some people can evade polygraphs. Polygraphs only record subjective responses, and they can make mistakes in certain situations, such as when an innocent person behaves like a criminal because Fear makes him appear very nervous when confessing, which is likely to be mistaken for lying. In other words: if there is no reason to lie and a lying reaction occurs, it may be caused by other reasons. In short, the test The lie detector accuracy rate is only between 64% and 71%."

"That means: the polygraph is just a tool, and the polygraph results can only be a reference. No matter how accurate the polygraph is, it can't be foolproof?" Xiao Ke looked at Lu Yingying with infinite admiration. Although she was his wife, he Still admire her vast knowledge.

"Yes, the lie detector mainly tests people's autonomic nerves. What is not controlled by the autonomic nerves is conditioned reflex. Therefore, when a person lies, the lie detector tests the person's autonomic nerves. If you eat thick chocolate, the plants can be paralyzed. Nervous, so you can avoid the polygraph test, such as being drunk and taking drugs. In short, there are many ways to avoid the polygraph test. Otherwise, there will be no need for the police and we will all be unemployed." Lu Yingying enjoyed Xiao Ke's gaze very much, Give him a loving smile in return.

"Are you having an office romance again?" Jiang Yiming said to Xiao Ke and Lu Yingying who were standing in the middle of the office.

"Captain Jiang, are you jealous?" Lu Yingying glanced at him and smiled playfully, making Jiang Yiming feel relaxed, because the case had made significant progress, so the smile returned to everyone's face.

"Yes, that's great. We can talk about love and cases."

"Captain Jiang, I don't think we can let Yang Wanjun go easily, otherwise he may sink into the sea, or even let the tiger go home." Xiao Ke already regarded Yang Wanjun as the murderer in his heart.

"However, I did not detain him without evidence and reason. This is an era where guilt is beyond suspicion. If no evidence can be found within the summons time, we must release him!"

"I'm worried about the next person to die in this serial murder case."

"Don't worry, I will send a surveillance team to monitor him 24 hours a day until evidence or another murderer is found."

"Captain Jiang is wise!"

"When did you start to flatter me?"

"It's not flattering, it's mature... You don't seem to think Yang Wanjun is the murderer?" Xiao Ke felt that Jiang Yiming had other ideas.

"Yes, I checked Yang Wanjun's file. He suffers from night blindness. This was mentioned in his annual physical examination. Rich people check their bodies very carefully, but I didn't check it. Of course, he should have known that he had it. Night blindness, so I don’t think it’s possible for him to go to Minghuang Valley to kill people at one or two o’clock in the morning.”

"Night blindness is mainly caused by a lack of vitamin A. It can be cured through diet and medicine. Modern cancers can be cured, not to mention night blindness?"

"No, he went to the provincial hospital for a physical examination on April 4 this year. He also has severe night blindness. Because he has to face computers, TVs, and mobile phones every day at work, it is difficult to cure."

"We speculated that he hired a murderer to kill someone, and he didn't want to go to the scene."

(End of this chapter)