The investigation of Liu Jun really surprised everyone.

The so-called best suspect in the past now seems to be more like the best back-stabber.

However, although Liu Jun has social media chat records as a tool to clear his name, it does not mean that Liu Jun is not suspicious.

Whether Liu Jun's dictation was a lie or not is uncertain at present, so Gu Chen can't just believe his side of the story.

"Come with us to the technical department of the city bureau. Gu Chen gave a suggestion: "We need your cooperation. ”

"Yes...... OK. Although Liu Jun was a little hesitant, seeing Gu Chen's serious face, he still didn't dare to refute it, and directly agreed.

After a few people got into the car, they went directly to the technical department of the municipal bureau.

At this moment, Gao Chuanfeng was inspecting the objects on the scene, and everyone was waiting patiently outside.

After some comparison, the time soon came to the end of work.

Many officers began to leave the office and head in the direction of the cafeteria.

But Gu Chen's third criminal investigation team was still sitting in a row in the waiting room.

Gao Chuanfeng, who was wearing a white coat, walked out of the testing room and saw that Gu Chen and the others were still at the scene, so he turned back to the testing room and greeted everyone: "You haven't left yet?"

"Isn't this waiting for your test report?" Gu Chen stood up directly, came to Gao Chuanfeng, stretched out his hand and asked him, "Where are the things?"

"So urgent?" Gao Chuan Kaede originally shrank back, looking embarrassed.

"Don't you tell us that this test hasn't been done yet, right?" Lu Weiwei also followed closely, looking like a teacher asking for guilt.

Gao Chuanfeng laughed and said, "I've been a forensic assistant for so long, and you, Gu Chen, are like a soul hypnotic every time, and I feel that you almost treat our technical department as if it were your home." ”

"What are you talking about, are there any things?" Officer Wang was also a little unable to sit still, the key was that he was hungry.

The sooner you get the test report, the sooner you can kill the canteen.

"It's really hard to meet you ancestors. Gao Chuan Kaede shrugged, put his hands into the pockets of his white coat, turned around coquettishly and said, "Stay here, I'll get it for you." ”

It didn't take long for Gao Chuanfeng to personally send a test report form to Gu Chen's hands: "I have already tested everything you wanted, and the murder weapon, that is, the stinger, does not have any fingerprints on it." ”

"I guessed it. Gu Chen looked at the data on the test form and shared it with Lu Weiwei, who was standing on tiptoe.

"But there are fingerprints on the paper cups. Takakawa Kaede continued to add.

Gu Chen hurriedly turned to the next page, and found that the test result was only one fingerprint, which exactly matched Liu Jun's fingerprint.

Gu Chen couldn't help frowning, looked back at Liu Jun, who was waiting in the corner of the waiting room, and turned back to ask Gao Chuanfeng, "Your test is not right." ”

"What...... What?" was also stunned by Gu Chen's questioning, Gao Chuanfeng directly sneered and asked, "I said Gu Chen, are you doubting my testing level?" ”

"I know you're professional, I mean, according to normal logic, this paper cup can't have just one fingerprint. Gu Chen also told Gao Chuanfeng what he wanted in his heart.

"I don't understand. Gao Chuan Kaede shook his head directly in response.

At this time, Officer Wang and Yuan Shasha also came to Gu Chen's side, and the two looked at Gu Chen in disbelief, as if Gu Chen had discovered the trick in it.

"Senior Brother Gu, do you mean that there is a problem with Liu Jun's fingerprints remaining on the paper cup?" asked Yuan Shasha.

Gu Chen shook his head: "Liu Jun's fingerprints remain on the paper cup, there is no problem in itself, the question is, why is there only his Liu Jun's fingerprints on the paper cup?

"This?" Yuan Shasha was stunned for a moment, and asked Gu Chen weakly: "Could it be that Senior Brother Gu means that Sun Miao, who made coffee, should also have fingerprints on it, but not now?"

"Yes, that's what it means. Gu Chen clasped his hands to his chest and walked back and forth on the aisle a few times before he said, "Judging from the situation we inspected the scene, it seems that there was a fight in the office. ”

"Yes. Lu Weiwei nodded fiercely and said: "The office is in a mess, I feel that the movement is a little big, the spilled coffee, and the broken watch of the deceased can show that the two sides did experience a fight at that time." ”

Gu Chen shook his head: "I don't think so." ”

"Not necessarily?" Officer Wang frowned and asked Gu Chen, "You mean...... There's no fight in the office?"

"Senior Brother Wang. Gu Chen looked up at him and asked, "If according to the normal situation, including the time of the deceased's meeting with Liu Jun, it seems that it can be concluded that the last time to leave the office and kill the deceased is extremely short. ”

"To complete the murder of the deceased in such a short time, it seems that Liu Jun is the most likely. ”

"But there is a question, Liu Jun was also called to the scene, not to mention the authenticity of this situation, even if it is, is he considered to be used?"

"If this situation does not exist, and the chat logs he showed us are just self-directed, then the risk is also extremely high, after all, through our technical means, the truth can also be ascertained. ”

"If that's the case......" Lu Weiwei frowned slightly and glanced at Gu Chen: "If this is the case, Liu Jun's crime seems to be too obvious, and I feel that if this is the case, these foreshadowings are completely unnecessary before." ”

"Yes. Yuan Shasha also agreed: "Judging from the whole case, it seems that the murderer's goal is to dump the blame on Liu Jun, so it is very coincidental in terms of time, and it seems that he knows Liu Jun very well." ”

But if you think about it carefully, it is not difficult to see that the person who Yue Liu Jun met must be the murderer, and it is the writer that Liu Jun wants to meet. ”

"Xiao Yuan, that's a good point. Gu Chen also gave a thumbs up in admiration.

Yuan Shasha scratched the back of her head shyly, and said softly: "I'm just expressing my shallow views based on Senior Brother Gu's speculation, and there are still many things to learn from Senior Brother Gu." ”

"It's already pretty good. Gu Chen also nodded slightly, looked at Liu Jun in the waiting room through the glass wall, and couldn't help but say: "If Liu Jun is really a murderer, there is no need to make all the clues against himself so obvious." ”

"And if he really wanted to kill the dead, he would never choose to be in an obvious place like the office. ”

"What do you say about that time?" Officer Wang suddenly wiped his mouth and said, "I remember that the watch in the deceased's hand was broken at 3:30 a.m. ”

"In terms of time, the time to meet Liu Jun with him is also extreme, could it be that as soon as Liu Jun leaves, the deceased will be murdered?"

"There's only one possibility. Gu Chen directly interrupted Officer Wang's speech, turned to look at him and said, "That is, the murderer is by your side." ”

"What do you mean...... Acquaintance?" Officer Wang asked.

Gu Chen nodded: "It is undeniable that someone who can coordinate the time of Liu Jun's meeting with the deceased very well, and who is very familiar with the deceased's handling of business negotiations, who will you think of first?"

"Sun Miao?" Officer Wang was also a conditioned reflex, and directly said the name of the deceased's assistant Sun Miao.

Gu Chen snapped his fingers and said, "It's Sun Miao, she has this possibility, and she will complete the crime in a very short time after Liu Jun leaves." ”

"But...... Lu Weiwei on the side hesitated for a moment and looked up at Gu Chen: "But Senior Brother Gu, have you ever thought that the deceased is also burly, and that Sun Miao, we have all seen it before, is a thin woman." ”

"With her bamboo pole size, how could she kill the dead during a fight?

"That's right. Yuan Shasha, who was standing on the side, also agreed: "Senior Brother Gu, in terms of figure, Sun Miao should not be the opponent of the deceased at all, and it is too far-fetched to make such a big move in the office, after killing his boss, he can still get out of the way." ”

Gu Chen smiled, and he also knew everyone's concerns.

Therefore, Gu Chen was not in a hurry, but asked Yuan Shasha rhetorically: "Xiao Yuan, if I tell you that the mess at the scene is a false phenomenon deliberately created after the murderer succeeds, how will you judge?"

"Deliberately made a false phenomenon?" Yuan Shasha was like a primary school monk who was suddenly named, and the whole person was stunned for a moment.

However, on the basis of Gu Chen's provision, she quickly thought of the main point, and the whole person couldn't help but be shocked: "Could it be that Senior Brother Gu means that Sun Miao took advantage of his special relationship as the boss's assistant to suddenly launch a surprise attack on the deceased without his knowledge, and hit him with a fatal blow?"

"Yes. Gu Chen snapped his fingers and said, "That's what I want to say, because judging from the scene, the deceased fell on his seat, and the stinger hit him from the back and hit him straight to the heart." ”

"Judging from the modus operandi, the trap was suddenly attacked in the back without the knowledge of the deceased, resulting in a fatal death on the spot. ”

There was a brief silence......

Everyone looked at Gu Chen blankly, with incredulity in their eyes.

Everyone's thoughts just now were still on the discussion of time, but Gu Chen changed his position, and everyone's thinking seemed to jump to another level.

Gao Chuanfeng, a forensic assistant who had been watching the three criminal investigation teams discuss with each other, was also stunned for two seconds, and suddenly broke the calm of the scene: "So the messy scene that Gu Chen said was completely created by the murderer, and the purpose was to confuse you police?"

"Yes. Gu Chen also slapped Gao Chuanfeng's shoulder, causing Gao Chuanfeng's body to suddenly sink down.

"I wasn't very sure before, but now through Gao Chuanfeng's detection, I found an important suspicion, which can also be said to be a loophole in Sun Miao's own appearance. ”

"Leak...... Loopholes?" Yuan Shasha was stunned for a moment, and then followed up and asked Gu Chen: "Then Senior Brother Gu, what is the loophole you discovered?"

"This is it. Gu Chen directly picked up the test report and said with a smile: "Gao Chuanfeng's test report has been clearly stated, there are only Gao Chuanfeng's fingerprints on the paper cup. ”

Then according to this understanding, this paper cup must have been used by Takagawa Kaede, and it contains coffee residues, which are mentioned in these test reports. ”

"But have you ever thought that when she was in Block B of Chenggong Building, Sun Miao said this, she said that she was going to make tea for Liu Jun, but Liu Jun refused, he said he wanted to drink coffee. ”

So Sun Miao personally made him a cup of coffee at that time, and then when Liu Jun left the office, he put the paper cup containing the coffee on Sun Miao's desk at will. ”

"I remember. Seeing Gu Chen mention it, Lu Weiwei suddenly realized: "And this Sun Miao also said that in the end, she threw the paper cup into the trash, which is the paper cup you found." ”

"So, why didn't Sun Miao's fingerprints appear?" Gu Chen asked everyone again.

There was a brief silence at the scene, and everyone seemed to understand.

Lu Weiwei still clearly remembers that the informant was Sun Miao, the assistant of the deceased.

And in the short period of time between Liu Jun's departure and the deceased being killed, only Sun Miao could easily attack from behind quietly.

And judging from the work habits of the deceased, business negotiations with people must be made in advance, even for their own lovers.

According to this understanding, after the last Liu Jun meeting, no one else appeared.

And the only person who could enter and leave the deceased's office was Sun Miao.

"So the deceased's watch, it is impossible to break it in a fight, and the time on the watch is just an illusion?" Lu Weiwei looked at Gu Chen with great fear.

Gu Chen nodded slightly, and said, "At present, this is the case, the time on the watch is just an illusion, and the chaos and coffee on the scene are also an illusion, because there is actually no fighting." ”

In the end, there were only Liu Jun's fingerprints on the paper cup, but Sun Miao clearly told us that she threw the paper cup into the trash by herself, and the paper cup should have her fingerprints on it. ”

"So, Sun Miao is lying, in fact, she is the murderer. Officer Wang frowned, and the whole person was not angry.

is also listening to Gu Chenyi's tidying up, it seems that the situation on the scene is not without loopholes.

Sun Miao put on gloves, stabbed the boss to death with a stinger, and then faked the scene, wanting to blame Liu Jun, but accidentally exposed his feet.

Just when everyone was still rejoicing at the discovery of the on-site vulnerability, Gu Chen directly took the rolled test report, knocked on his palm, and turned around and left.

Lu Weiwei raised her head and asked, "Senior Brother Gu, where are you going?"

"Find Sun Miao. Gu Chen continued to walk forward and raised the test report on his right hand.

......

......

7:30 p.m.

Gu Chen, Lu Weiwei and Officer Wang, who had just finished dinner, had been waiting for a long time in the No. 2 interrogation room of the Furong Branch.

It didn't take long for Yuan Shasha to bring Sun Miao to the scene, and after arranging her to sit on the interrogation chair opposite, she came back directly to turn on the camera.

After that, he obediently moved a stool and sat quietly beside Gu Chen.

"Sun Miao. Gu Chen opened the transcript, looked up and asked her.

Sun Miao's whole person trembled, and he didn't know why he said: "That's right, it's me." ”

"Do you know why I called you over?" Gu Chen asked again.

"You...... Do you want to know about the boss?" Sun Miao said weakly.

Gu Chen shook his head.

"That'...... Do you want to know who your boss has been dating lately?"

Gu Chen still shook his head.

Sun Miao looked at Gu Chen's sharp eyes, and suddenly had an ominous premonition, and said in a low tone again: "That...... So what are you looking for me to do?"

"We want to know, why did you kill your boss?" Gu Chen said.

"What...... What?" When Sun Miao heard this, he looked at Gu Chen in a daze, and also sneered: "Comrade policeman, you ...... Are you mistaken? I'm calling the alarm!"

"I know you called the police, and I answered the phone. Lu Weiwei also has one thing to say.

"That'...... Then what do you mean?" Sun Miao seemed to be greatly wronged, and the whole person suddenly burst into tears.

Gu Chen directly opened the drawer, took out the paper cup in the transparent forensic bag, and said, "Do you remember this paper cup?"

"Remember, isn't this the paper cup you found in the trash can this afternoon?" Sun Miao said.

But when I thought about it, I asked, "But, what are you asking me for?"

"You said that Liu Jun wanted to drink coffee, so you made him coffee, and then when Liu Jun left, it was you who threw the paper cup into the trash, right?" Gu Chen said.

Sun Miao was stunned, and her heart was pounding.

She looked at the paper cup in Gu Chen's hand, sipped her saliva and said, "I...... Did I say that? I ...... I don't remember. ”

"Hehe, don't you remember?" Officer Wang also shook his head, and put the law enforcement recorder in the drawer directly on the table: "Our police have a record of handling the case, you don't remember, but the law enforcement recorder remembers." ”

"Ah, did I say that?" Sun Miao was nervous at the moment, although she still looked like she was pretending to be calm.

But for several people who are experienced in interrogation, Sun Miao's various small actions seem to have betrayed her.

Gu Chen turned the pen in his right hand and reminded her: "You said that Liu Jun was the last to leave the office, and then you didn't know the situation, so you also went downstairs to pick up the courier." ”

"But the surveillance video sent to us by our colleague shows that you did go downstairs to pick up the delivery, but it didn't take much time, and you can complete the crime during this time. ”

"Wait...... Wait a minute. Sun Miao suddenly interrupted Gu Chen's words and retorted, "What are you talking about? I, a weak woman, how could I assassinate the boss, he is a big man." ”

"That's not the point. Gu Chen directly retorted back, and said, "You can take advantage of the unpreparedness and attack your boss from behind, and if you stab you in the heart, your boss will definitely be killed on the spot." ”

"Yes...... But even if you're right, then there's still time? I was back at the office, but it was already past 3:30, but the boss was obviously killed before 3:30, because his watch was fixed at 3:30, and I wasn't there at that time. ”

Gu Chen waved his left index finger and said, "You just used a trick to cover your eyes, just like you created a messy fight scene in the office." ”

"Just use your hands and feet on the deceased's watch, smash the quartz screen, and turn the time back to the time when you were not there, this is completely doable, I can cover it up for you. ”

Speaking of this, Gu Chen took out the broken watch from the drawer again.

Subsequently, using a thin iron wire, Gu Chen adjusted the time of the watch at will through the cracked quartz gap.

After completing this series of demonstration operations, Gu Chen looked up at Sun Miao and asked her, "Is there anything else you want to say?"

......