The Secret Chamber of the Card Game

When Xiao Lou and Tang Ci went out together, Yu Hanjiang was waiting for them in the corridor. The man in police uniform was leaning against the window, with his hands folded around his chest, his brows were tightly frowned, as if he was thinking about something.

Facing Shang Xiaolou's gaze, Yu Hanjiang immediately took a step forward, and said in a low voice, "You have asked your friend to find a good lawyer so quickly, are you planning to let this lawyer defend you?"

Xiao Lou looked calm: "After all, I don't understand the law, and I don't know what to say and what not to say."

Tang Ci glanced at the two, and said to Xiao Lou: "Professor Xiao, please rest assured, I will definitely return your innocence."

Yu Hanjiang raised his eyebrows, and looked at Tang Ci calmly and sharply, obviously not believing his words.

Tang Ci nodded towards Yu Hanjiang, turned around and walked away calmly.Xiao Lou was escorted back to Cell No. 1. Yu Hanjiang stood at the door of the cell, looked at him through the bars, and asked, "Have you thought of any new clues?"

Xiao Lou sat on the wooden bed with a serious expression: "Don't Team Yu think there are many strange things about this case?"

Yu Hanjiang signaled him to continue.

Xiao Loudao: "The evidence you have, first, is the call records between me and Ning Xue; second, the hair of me and Liu Qiao found at the autopsy site, combined with the photos of me in Ning Xue's mobile phone, it is inferred that I The relationship with her..." Xiao Lou paused, and said in a firm tone: "However, these two pieces of evidence are not the so-called 'ironclad evidence'."

"Oh? These are all very unfavorable evidences against you. Is your explanation still that the mobile phone number was stolen and the hair was also stolen?" Yu Hanjiang said coldly, "But this explanation is not very convincing, and neither are you It is possible to convince the judge with this interpretation."

"Captain Yu, may I ask where the deceased Ning Xue's cell phone was found?"

"In the square where the fireworks were set off on New Year's Eve, she accidentally left her backpack in..." Yu Hanjiang frowned suddenly when he said this, and raised his head to meet Xiao Lou's calm gaze. He suddenly reacted: " At 31:9 p.m. on the 9st, Ning Xue answered the phone, and then came to the lake and was pushed into the lake. We received the call at around 15:[-] p.m., and her mobile phone was lost in the square. If, at that time, she She answered the call in the square, then she..."

"Then she won't have time to go back to the scene of the crime." Xiao Lou said calmly, "If it was normal, it would take 10 minutes to take a taxi from the central square to the Conservatory of Music. Fireworks, celebrating the New Year, according to the practice in previous years, there will be traffic control around the square, taxis need to go around, and she can't get a taxi at all."

"..." Yu Hanjiang's mind gradually became clear.

The location where the deceased's mobile phone appeared does not match the time and place of the crime. This is the first loophole.

The previous reasoning was that Ning Xue answered the call from Xiao Lou and went to the lakeside and was killed by Xiao Lou, but on the night of December 12, if she really answered the call, she answered the call at the Fireworks Square at 31:9, and appeared at 9:15 In the conservatory, it's simply not possible.

That proves that Ning Xue definitely did not answer the call at 9 o'clock. Her mobile phone should have been in the hands of another person at that time.

Since it wasn't Ning Xue who picked it up, it couldn't be Xiao Lou who picked it up.

The mobile phone is only used as a tool to forge a fake certificate that "Xiao Lou and Ning Xue are talking".

Seeing that Yu Hanjiang was frowning, and obviously understood what he meant, Xiao Lou went on to say, "Let me analyze it for Team Yu. At 9 o'clock, the murderer must have seen me and Liu Qiao at the Conservatory of Music, so he used The 136 mobile phone number prepared in advance calls Ning Xue's number. If the murderer is alone, he will call with his left hand and answer with his right hand. His accomplice, who was probably in the fireworks plaza at the time, played a play with him."

Yu Hanjiang nodded: "Ning Xue died before 9 o'clock."

Xiao Lou said with satisfaction: "It seems that Team Yu has already noticed the key point of this case. I believe that with your level, you will be able to find the real murderer."

Yu Hanjiang gave him a complicated look, then turned and left.

Xiao Lou breathed a sigh of relief, lying on the wooden bed, staring at the ceiling thoughtfully.

The murderer's method of framing is really powerful, but it's a pity that he neglected the details of "traffic control" that night, and there was a problem with the time difference; moreover, the whole process of the crime was too idealistic, which easily aroused suspicion.

Now, Xiao Lou has pointed out the key doubts, and the next step is to see if Tang Ci and this "Yu Hanjiang" can't do enough.

***

After leaving the police force, Tang Ci immediately took a taxi back to the company.

Liu Qiao stayed in his laboratory, because Liu Qiao is also a wanted criminal now, and it is not convenient to show his face in public. The only relatively safe place he can think of is his own intelligence laboratory.

In order to prevent the police from monitoring Liu Qiao's communication equipment, Tang Ci did not contact her along the way.

After returning to the laboratory, he found that the entire room was empty. Tang Ci was shocked, and hurriedly called out: "Liu Qiao?"

"I am here."

A familiar girl's voice came from his ear. Tang Ci turned his head in the direction of the voice and found that Liu Qiao had turned himself into the size of a thumb and was lying behind the ear of an intelligent robot.Even if a hunter came to her, it would be difficult to find her for a while.

Looking at the little girl with big fingers, Tang Ci couldn't help curling the corners of his mouth: "You can hide."

Liu Qiao landed on the table in front of him with a light jump, and asked concerned: "How was the meeting with Professor Xiao? Did he tell you about his next plan?"

Tang Ci sat down, turned on his laptop, and entered a series of URLs.

Liu Qiao lay beside him staring at the computer.

She couldn't understand the large string of garbled characters that appeared on the screen. She only heard the crackling sound of Tang Ci's fingers tapping the keyboard quickly. She waited patiently for a moment. Suddenly, the light on the screen lit up and dozens of monitoring Camera.

The densely packed small monitoring windows are quite like the police handling the case.

Liu Qiao was surprised: "You hacked into the surveillance system? Where is this surveillance?"

The faint blue light from the notebook shone on the man's fair face, making his skin almost transparent.

While typing on the keyboard, he said calmly: "The surveillance in the School of Music and the medical school next door covers most of the school area. We have to check one by one."

Liu Qiao immediately cheered up, changed himself back, and sat next to Tang Ci: "There are too many, let's check separately."

Tang Ci found another computer, shared half of the video with her, and said, "You came to check the medical school. You are more familiar with the environment of the medical school than I am. The monitoring near the dissection room of the laboratory building must have been destroyed. But the monitoring on the main road is basically still there, look for Zhang Hengyu to see if he has appeared in the monitoring."

Liu Qiao nodded, and began to double-fast-forward, searching one by one.

Tang Ci is in charge of the video recording of the Conservatory of Music. He first checks the video recording at the lakeside after 8 o'clock last night - the camera at the lakeside was destroyed, making it difficult to capture the passing students; and near the gymnasium, there are also several key cameras that will be destroyed. There are many dead spots that cannot be captured by surveillance.

The murderer was very cunning and had done his preparatory work at the conservatory in advance.

Tang Ci had no choice but to continue to expand the scope of the search.

Balloons, Xiao Lou once mentioned this key word. At that time, when Xiao Lou and Liu Qiao walked out of the backstage, they saw a person leaning over to sort out the remaining balloons in the corridor.

Tang Ci looked for balloons in all the monitoring, and sure enough, in the monitoring of the "Student Activity Center" building, he found a large number of colorful balloons, which should be the same as the balloons that were arranged at the scene that night.

At 18:30 in the afternoon, a few students rode bicycles, carrying several bags of balloons, packages, banners and other props, to the direction of the gymnasium.At the fork in the road to the gymnasium, these people lost their traces due to the sabotage of surveillance, but after thinking about it, they must be the staff who went to arrange the venue for the finals.

Tang Ci enlarged the picture——

That night, all the staff wore a blue sign similar to "Volunteer" around their necks, and most of them wore black clothes. There were a total of 5 staff members carrying balloons and banners in the picture , 3 men and 2 women, they talked and laughed all the way, they should all be students of the Conservatory of Music, and they are very familiar with each other.

Tang Ci called out the surveillance at this fork in the road, and checked the video after the event ended at 10 pm——

At 10:[-] p.m., the singing competition ended, and a large number of spectators poured out of the gymnasium. Within a few minutes after the event ended, the instantaneous flow of people was too large, and because of the dim light at night, it was difficult to find clues from the surveillance.

Tang Ci had no choice but to zoom in on the monitoring screen, watching it second by second, not letting go of every frame.

I don't know how long he watched it, but just when he felt that his eyes were going to go blind, he suddenly saw a figure in the crowd——

That person was not much different from the students around her. She was quite tall, more than 1.7 meters. She was wearing a long black coat with a hat covering her face. It was not unusual to dress like this in winter, but Tang Ci noticed that her The clothes look familiar, and there is a big schoolbag behind her.

Comparing with the 5 people who brought balloons to the event site that he saw before, he found that the similarity of clothes reached 100%.

In winter, of course there are students who wear the same coat, but this person's clothes have a characteristic-a leaked red balloon is accidentally hung on the hem of the lower left corner.

She left alone.

The staff should have cleaned up the scene with their companions before leaving. Why did she leave early?

She disappeared at the end of the road where surveillance was destroyed, and she didn't know where she went.

In the monitoring after 10:6 p.m., she was wearing a hat and could not see her face clearly. However, at [-]:[-] p.m., she and her companions were on the way to the venue with balloons, but her face happened to be photographed!

Comparing the clothes, it is easy to identify which one of the five people she is.

Tang Ci took a screenshot of this face, entered it into the student database of the Conservatory of Music for data comparison, and soon got the result——

"Chen Mengmeng, 20 years old, a third-year vocal music student, is in the same class as Ning Xue, and lives in the same dormitory."

When Liu Qiao heard this, he immediately leaned over to look at Tang Ci's computer: "Is she a suspect?"

"Look, does the black coat look familiar in this photo?" Tang Ci asked.

Liu Qiao recalled for a moment: "I seem to have seen it somewhere... By the way, when Professor Xiao and I came out of the backstage last night, I saw a person squatting in the corner to arrange the balloons. I couldn't see the person's face clearly. But look at this clothes, it should be her!"

"Professor Xiao suspects that someone has been watching you secretly. When you walked out of the gymnasium, he called Ning Xue to create so-called evidence of the call." Tang Ci narrowed his eyes and looked at the enlarged photo on the computer. There was a faint black mole on the corner, and he said: "The person watching you is probably Ning Xue's roommate Chen Mengmeng, the real murderer who killed Ning Xue."

Liu Qiao didn't have much impression of the three words Chen Mengmeng, but when she carefully recalled the minutes of the police force meeting recounted by Xiao Lou, she suddenly remembered some details: "I remember that Professor Xiao was hiding in the police force and eavesdropped on their meeting. It was mentioned that when visiting the roommates of the deceased, one of the roommates named Chen Mengmeng took the initiative to mention that Ning Xue had two boyfriends, and that the ex had been entangled with Ning Xue, and clearly reported Ning Xue and Zhang Hengyu The location of the date last night."

Tang Ci said: "Then, the police found Ning Xue's bag and mobile phone in the square where they were dating."

Liu Qiao's eyes lit up: "In other words, this Chen Mengmeng is guiding the police to find evidence intentionally or unintentionally?"

Tang Ci also felt that this possibility was very high. He frowned and thought for a while, and said, "Why did Ning Xue go to the lake alone? Unless someone she trusted asked her to go, and that person also knew Which tree by the lake is engraved with the names of Ning Xue and Zhang Hengyu? Taken together, roommates are the most likely. As for why the mobile phone appeared in the square, it is likely that the murderer killed Ning Xue and got her mobile phone to forge After finishing the call evidence, since you and Professor Xiao had already gone to the lake at that time, the police would arrive soon, so she didn't dare to put the mobile phone by the lake, so she had to hide it in her backpack and wait until the concert was over before putting it on the phone. Throw the phone to the central square."

The more Liu Qiao thought about it, the more she felt that it made sense, and she continued to analyze: "My roommate Xu Mingyue went to the library that night, passing by the lake, the bicycle was poked and punctured, and then screaming attracted me and Professor Xiao; People, you must be very aware of Xu Mingyue's habit of going to the library every night, so you put nails on her way in advance?"

Tang Ci said: "Besides, Chen Mengmeng is a staff member of the singer contest that night. He is very close to the lake, so he can clearly grasp the movement by the lake. If she asks Ning Xue to chat by the lake at 8:9 in the evening, she pushes Ning Xue Went to the lake, took Ning Xue’s mobile phone, and then went back to the backstage to ask someone to give her an alibi. The police initially believed that Ning Xue died after 8 o’clock, and Chen Mengmeng’s alibi was actually invalid. She died at [-] p.m. At thirty o'clock, I must go out with an excuse like 'going to the toilet'."

Liu Qiao: "..."

Such a girl who was hiding in the crowd was almost ignored by them.

Liu Qiao said with a sullen face, "What about the murderer who killed Zhang Hengyu?"

Tang Ci said: "In this world, since we have teammates, there will not be only one hunter, she also has accomplices."

Liu Qiao turned the laptop 90 degrees and pointed it to Tang Ci: "The surveillance on my side saw that Zhang Hengyu left the medical school at 4:9 pm, came back at [-]:[-] pm, and headed for the direction of the laboratory building. All the surrounding cameras were destroyed, and no other suspicious targets were seen approaching here." She couldn't help wondering: "How did the murderer get in?"

Tang Ci glanced at the monitor, and said calmly: "The murderer didn't go in, but never came out."

Liu Qiao quickly realized: "You mean, the murderer has long been waiting for him in the laboratory building?"

Tang Ci said: "The only explanation is this. Otherwise, what is Zhang Hengyu doing in the laboratory building alone at night?"

Liu Qiao followed this line of thinking and said: "The person who can let Zhang Hengyu enter the laboratory building without any precautions must be someone he trusts. And the one who can stay in the laboratory building without attracting attention should be... teacher?"

Tang Ci said: "If the teacher asks the students to help with the experiment, the students will naturally not doubt it, especially Zhang Hengyu, a class leader who studies more seriously, might be proud of it. He made an appointment with Ning Xue to go to the square to watch the fireworks that night , Why did you come back early? It is very likely that the two of them have received news from someone they trust and have to change their plans. "

Liu Qiao frowned and thought carefully—she was not familiar with the Department of Forensic Medicine, but Professor Xiao seemed to have mentioned that he had a teaching assistant?

I remember at that time, in order to concentrate on investigating the case, Professor Xiao also said that he would ask the teaching assistant to help him with the class, and went to the office to send an email to the teaching assistant...

Liu Qiao reacted suddenly: "Teaching assistant! That teaching assistant often substitutes for Professor Xiao's class. It is easy to get close to Professor Xiao, know his whereabouts, and steal his phone number card!"

The two looked at each other and immediately stood up.

Tang Ci picked up the car keys and turned to go out: "Find these two people as soon as possible, if they run away, Xiao Lou will not be able to clean up."