traces of all things

"Brother."

Just when the entire video monitoring room was boiling because of Lu Zheng and Wei Xiongfeng's discovery, someone pushed the door open and it was Tang Shaoyuan.

"Is there something new?" Lu Zheng raised his eyebrows, got up and asked.

Tang Shaoyuan pursed his lips and smiled slightly: "I found a piece of useful information. Shi Jingyi resigned six months ago due to health reasons. Before that, she had been working in a biopharmaceutical company and had sufficient exposure to γ-hydroxybutyrate. According to the current investigation, she is the only suspect who has the ability to contact and use γ-hydroxybutyric acid in work and research.”

Wei Xiongfeng jumped up excitedly and snapped his fingers.

"Fuck! It's her!"

**

The cold interrogation room.

"Click—click—" two sounds, and the investigators locked the locks on the interrogation chair one by one.

"Deputy Team Xian." After locking it, the little investigator looked a little embarrassed, and ran to Xian Hongru and whispered in his ear: "The suspect is too thin, and the interrogation chair doesn't seem to be locked."

After hearing this, Xian Hongru got up, walked to the interrogation area with a dark face and frowning, and walked around twice.

The thin figure on the chair was stunned, his face was expressionless, and his eyes were not even in focus.

"There shouldn't be a problem." Deputy Captain Xian nodded, "The palm can get stuck."

After everything was settled, the interrogation began.

It may be that it is easier for them to communicate with each other because they are both women. This time, Captain Huang Ying was mainly in charge of the interrogation.

"Is that Shi Jingyi? Do you know why we are looking for you today?"

Shi Jingyi on the chair didn't seem to hear anything, she just raised her head sadly, her eyes were focused on a corner of the room, she just didn't look at anyone.

Lu Zheng, who was sitting next to Captain Huang, frowned slightly.

"From 8:25 noon to twelve o'clock on August 11, where were you? What did you do? Are there any witnesses?"

Captain Huang didn't get entangled in Shi Jingyi's refusal to speak, and simply asked the second question.

Shi Jingyi seemed to have some mood swings at this time, but it was fleeting. She saw her neck move, and suddenly big tears rolled down from her eyes.

It really rolled down, without sobbing or trembling, it seemed a little weird.

Lu Zheng frowned even tighter.

When Shi Jingyi came to the Municipal Bureau for an interview last time, although Shi Jingyi seemed to be in a poor state of mind, she still answered all questions and could see the fluctuations in mood.But now she looks like a puppet whose soul has been taken out, cutting off all perception of the outside world.

Is it because the crime was exposed and stubbornly resisted, or was it filled with remorse and guilt?

No, neither!

Lu Zheng got up suddenly, leaned into Captain Huang's ear and said eagerly: "Captain, the interrogation may need to be suspended for a while. I suspect that Shi Jingyi's mental state is not right."

Soon, the Municipal Bureau invited a psychiatrist.

"This patient came to our department for an examination." Coincidentally, this is the doctor Shi Jingyi went to see before: "The patient has a history of depression, which is quite serious. It should have improved a while ago, but now it seems that the situation is getting worse. deterioration."

Shi Jingyi's physical and mental conditions were not enough to support the next interrogation, and she was quickly sent to a professional nursing institution for treatment, and the case fell into a quagmire for a while.

"Team leader, do you really think she did it?" Wei Xiongfeng muttered, "She's been like this, and she feels good and bad, can it work?"

Lu Zheng also sighed, stretched out his hand and rubbed his furry head vigorously: "It's still not sure yet. We can only start from the side. Nobita, please continue to follow up and lead the team to the area of ​​the laboratory building to investigate the situation of the day. Are there any witnesses who saw Shi Jingyi entering and exiting the laboratory building? She has a prominent image and may leave a deep impression on people. I will study the physical evidence at the scene."

After dealing with the unexpected situation with a slap on the back of his head, Lu Zheng dragged his tired body back to the evidence room, opened the work notes in his hand, bit the tip of the pen, and reorganized his thoughts.

Among the current suspects, Xiong Boyi and his junior sister Jin Yi have been together since they left the laboratory building, and they have no time to commit the crime. If Jin Yi did not lie, then his suspicion can already be ruled out.Zhou Xuehai said that after leaving the laboratory building, he went to Xueyi cafeteria for dinner, and a junior student who happened to meet in the cafeteria also testified for him.Wang Yong refused to say where he had gone at first, but after repeated questioning, he admitted that he was depressed after being taught a lesson by Guan Bin, and went out of school to find a familiar Liuying to have fun, which was also recognized by the police. It is confirmed that Wang Yong has now been detained and educated.The remaining Professor Mei and Shi Jingyi have not been ruled out as suspects, but based on the evidence currently available, Shi Jingyi's suspicion is obviously much greater than that of Professor Mei.However, she is not in good health now, and she cannot obtain more information through her confession.

Hey, I'm so worried!

Lu Zheng lowered his head and tapped his forehead on the glass pad on the desk several times.

It was cold and sober, like someone's hand.

"Bah, bah, what are you thinking?" Lu Zheng quickly patted his face twice as if he had just woken up from a dream, and patted away a bunch of miscellaneous thoughts.

After calming down, he took the physical evidence in front of him and held up a magnifying glass to think carefully.

This physical evidence is exactly the fragments of paper collected when I first entered the scene, and a pile of fragments of papers that were nailed up with spikes and found when I re-examined the scene.

The moment the reconnaissance site found the fragment, perhaps because of the detective's intuition, he felt a vague premonition telling him that this book had something to do with the case.But after that, he had read the paper countless times, but he didn't find anything special.

"Hey... why did you write it in English?" Lu Zheng muttered depressingly while re-opening the fragmented thesis in front of him.

His English wasn't very good at first, and Professor Guan's paper contained some things that he couldn't understand even if he spoke Chinese, which made him look even more broken.Originally Tang Shaoyuan and Xue Yiwei were there, and there was also a small translator to help, but now there is a shortage of manpower, and both of them were assigned to assist Wei Xiongfeng, leaving him to fight alone.

Time passed minute by minute.

The paper is a little fragile, so be very careful when turning it over.In the whole office, only the gradually dimming daylight and a slight rustling sound accompanied him.

"Provided that don't know don't know don't know don't know, weareconfidentto don't know the don't know don't know don't know..."

Lu Zheng tapped the paper lightly, confirmed word by word, and murmured in a low voice.

"what--!"

Suddenly, a piece of English writing jumped into his eyes.

The heart couldn't help but pounding.

Although he doesn't know these words very well, Lu Zheng is sure that he has seen this part of the content in other things!

where is it?where is it?Think quickly!

"Fuck." He couldn't help cursing a curse word in a low voice, and rubbed his sore forehead vigorously: "You are useless when you should be needed!"

Murphy's Law tells us that the more you don't want something to happen, it will happen.In the same way, the more you want to remember something, the more often you can't remember it.Lu Zheng crazily searched for all the details related to the case in his brain, but the more he recalled, the more blank it became.

When his anxiety reached its peak, the fingers rubbing his forehead suddenly touched a small piece of slightly undulating skin.

It's that scar.

For a moment, it was as if a basin of cold water was poured on him, and he woke up immediately.

After biting the tip of his pen and calming down for a while, he took a deep breath, and felt that sliver of inspiration that he couldn't grasp no matter how hard he tried gradually emerged again.

It was scraps of paper, that's right, the ones with "J" edges, the ones he thought were fire starters!

"Hello, Nobita?"

He quickly picked up his mobile phone and dialed Wei Xiongfeng's number.

"What's the matter? Team leader? I'm leading a team to visit the Provincial Normal University!" Wei Xiongfeng's loud voice was accompanied by the car horn, and the background noise of pedestrian conversation came from the receiver.

Lu Zheng got straight to the point: "Recover the computer data and the print records on the printer, will you do it?"

"No problem, little case!" Anything involving computers and cameras is Wei Xiongfeng's professional field. Hearing this now, he naturally patted his chest.

"Very good, then you hand over the work and let Yiwei lead the team to continue the visit. You first bring Shao Yuan and a few children who understand technology back, and by the way, bring the printer in Professor Guan Bin's office and the office of the members of Guan Bin's laboratory. They brought all the public printers from here, and the case has made great progress.”

**

Time passed quickly, and soon, it was time for dinner.

"Why is there a meeting again?!" A small investigator from the city bureau glanced at the notification on his mobile phone, and wailed, "The experts from the provincial department can really make a fuss!"

As soon as the words hit his head, a book hit him.

"What does it mean to be able to toss around? We are going to have a meeting so soon, so it is obvious that we have found key evidence, okay?" It was Xue Yiwei who patted him: "This kind of learning opportunity is so rare, we should cherish it! Pack up and go!"

Soon, a group of people from the task force gathered in the conference room again.

The time for this meeting was very tight, Lu Zheng also simply omitted the opening remarks, and directly raised his eyebrows to signal Xue Yiwei to start reporting after everyone was gathered.

Xue Yiwei received the signal from him, coughed lightly, and cut straight to the point: "I found a witness at the scene, that is, the janitor of the commissary downstairs in the experiment. When the uncle went upstairs to fetch water, he saw Shi Jingyi who was walking in a trance, and found her alone. She went straight to the top floor in a daze, a little skeptical in her heart, afraid that she would commit suicide if she had something to worry about, so she followed. After Shi Jingyi was stopped by the uncle, she chatted with the uncle for a while on the stairs. After she seemed to be in a normal mood, The uncle watched her leave the laboratory building, and never approached Professor Mei's laboratory during the whole process."

"In addition, we learned from Jingzong that Shi Jingyi's mental condition has improved and she is willing to communicate with others. She said that she went to Guan Bin to discuss divorce, but Guan Bin did not agree and went downstairs. After that, she suddenly felt that life was boring, the whole world was meaningless, and she had the urge to commit suicide, so she chose a relatively high laboratory building and wanted to go up to jump off the building, but was stopped by the uncle of the commissary, this point does not conflict with the testimony of the uncle."

"After Shi Jingyi is ruled out, we have no suspects." Xue Yiwei said here, with a headache expression on his face, frowning: "Could it be that Professor Mei directed and acted himself? But it's not like... And if he It is the murderer, and there is no reason to disclose the existence of that small gap to us."

"Of course there are still suspects, but it's not Professor Mei." Lu Zheng stepped forward and turned on the projector: "Come on, Nobita, tell everyone about the two documents you just produced."

"Okay." Wei Xiongfeng said while "slapping" two pieces of printed paper, with some garbled codes and forms on them.

"This copy is the print record of the printer in Professor Guan Bin's office. From 55:[-] on the day of the incident to now, only one document has been printed at [-]:[-]. This copy is from Professor Guan Bin The printing record of the shared printer of the laboratory members shows that from [-]:[-] to the incident, only at [-]:[-], someone printed a document from this printer."

"The computer that printed this document belongs to Professor Guan's student—Zhou Xuehai."