Qin Yuchen's eyebrows twitched, and after hanging up the communicator, he said to Huang Zekai: "Be vigilant, Deng Fu may have been killed."

Huang Zekai was startled, and hurriedly followed Qin Yuchen out of the dusty room.

The young woman shouted from behind: "Officer, did something happen to Mr. Deng?"

Qin Yuchen turned sideways and replied: "People from the Federal Police Department will come up to take samples for investigation in a while, and we have no way to tell you about the rest."

The young woman stood still with her eyes wide open.

Seeing Qin Yuchen walking down the stairs again, Huang Zekai was stunned for a while and then followed.

Standing by the car door, Qin Yuchen couldn't help but raised his hand and stroked his pocket for a few moments, his brows were tightened, and he looked into the distance in silence.

How did Qiao Zhuo know that Deng Nan might be the murderer before so many police detectives? Did he have some clues beforehand?Or was it something that the police didn't notice when Dunnan was hospitalized afterwards?

When Qin Yuchen was thinking, Huang Zekai's voice suddenly came from beside him.

"Captain Qin, what are you thinking?" Huang Zekai asked.

Qin Yuchen came back to his senses suddenly, he opened the car door and sat in the driver's seat, "It's nothing, I'm just thinking about the case."

Huang Zekai suddenly said thoughtfully: "The moment I looked at you just now, I suddenly thought of someone."

Qin Yuchen stepped on the accelerator and drove towards Deng Nan's residence, and said, "Which person?"

Huang Zekai flipped through the thick stack of record books in his hand, and said absently: "Professor Qiao, who came to the police station for a psychological test that day."

Qin Yuchen's arm holding the steering wheel tensed instantly, his muscles puffed up, and he asked, "Why?"

Huang Zekai blinked and tried to explain: "Because of Captain Qin, you all have an aura that isolates others, how should I put it..."

"Similar to a sense of oppression, an absolute sense of control."

"It's the kind of similar aura that belongs to geniuses like you who are different from us ordinary people."

Qin Yuchen frowned fiercely, and then heard Huang Zekai laughing: "I'm talking nonsense, Captain Qin, don't take it to heart."

Qin Yuchen hummed lightly, but he was thinking in his heart, is he similar to Qiao Zhuo?It doesn't look like anywhere, after all, that man is so indifferent and beautiful.

——

Unsurprisingly, no suspicious points were found in Dunnan's residence. As said in the communicator, there was no sign of a second person other than Dunnan in the whole house.

Huang Zekai looked at Zhang Yang doubtfully and said, "But Deng Nan's former neighbor said that he made a special trip to bring grandpa here to live with him."

Zhang Yang raised his gloved hands, with helplessness in his eyes, and said, "Otherwise, why did I rush here in full armor? We all thought we could find Deng Fu's body here."

Qin Yuchen stood beside the bed in the master bedroom without saying a word, his eyes carefully scanned all the items in the room.

Suddenly, his eyes froze, and he walked quickly to the pen holder and took out a golden pen.

"Huang Zekai!" Qin Yuchen shouted.

Huang Zekai and Zhang Yang looked over, "Captain Qin!"

Wearing gloves, Qin Yuchen put the pen into the evidence bag, raised his eyebrows and said, "Check the fingerprints inside."

Qian Guang, who was wearing a mask, asked, "Captain Qin, is there anything strange about this pen?"

Qin Yuchen answered while opening the closet: "The production of that model of gilt-gold cylindrical fountain pen has been discontinued as early as 20 years ago, and this kind of fountain pen that needs to be rotated to refill is only used by older people."

Qian Guang suddenly realized: "Captain Qin, you mean this pen belongs to Deng Nan?"

Huang Zekai quickly brought the evidence bag over.

Qin Yuchen said calmly: "No accident, it belongs to him. All the traces in this room that belonged to another person have been deliberately erased, but as long as a person has been here, his traces will definitely be left behind."

"This kind of hidden, invisible traces requires us to observe carefully."

Huang Zekai and Qian Guangqi said together, "Yes, Team Qin!"

While searching, Qin Yuchen thought of Qiao Zhuo's room, the layout and smell of a person who really lived alone, he had seen it thoroughly that night.

As for Dunnan's room, there was none at all.

The evolution of the five senses made Qin Yuchen realize that there were traces of two people's long-term residence in this room at the first moment when he came in. The smell cannot be covered up by physical means. It dissipates in the air and contaminates everything in it.Items have a strong sense of presence.

Sure enough, only ten minutes later, the voices of the police detectives came from the room frequently.

"Qin team, I found a sugar bowl in the kitchen that is not written in Deng Nan's handwriting!"

"Qin team, I found a few pieces of paper in the window partition of the bathroom, which recorded the money used to buy vegetables, and the handwriting is not Deng Nan's!"

The paper in the window divider...

Huang Zekai opened his eyes in surprise and said, "Deng Fu blocked it to prevent the wind from blowing in."

Qin Yuchen said in a deep voice: "Deng Nan is indeed not the only person living in this room."

——

As soon as Qiao Zhuo came out of the bathroom, he heard the system's notification sound in his ears: "The male protagonist Qin Yuchen's career growth value +2."

Qiao Zhuo rubbed his hair and asked, "Has Qin Yuchen realized Deng Nan?"

The system replied: "Yes, the host, the host has searched Deng Nan's residence for a round."

Qiao Zhuo raised his eyebrows: "Tomorrow will definitely come to trouble me again."

The system choked for a while, and reminded aloud: "It has been detected that the monitoring equipment in the host's room has been turned on. Please pay attention to keep the villain setting."

Qiao Zhuo sighed, and asked, "Can the next world give me some private space?"

The system was silent for a while, and then said, "It depends on your performance."

Qiao Zhuo: "Huh?"

The system immediately coaxed him spinelessly, and agreed, "Of course."

In the dark, smoky bedroom, a tall man with shoulders was sitting at a computer desk, and the downloaded citizen files were displayed on the screen in front of him.

The moment clicked on it, a one-inch photo jumped out that was clearer than the document that was previously reviewed for the combined case.

Qin Yuchen's eyes narrowed, but his fingers couldn't move down, and the electronic document page on the screen remained on this home page for a long time.

Qiao Zhuo in that photo is much younger than now, but the indelible coldness in those eyes seems to be engraved in his heart, what kind of person can have such pale eyes.

Qin Yuchen suddenly remembered what Qiao Zhuo said last night.

"The four words of first-degree danger have destroyed my whole life."

Qin Yuchen's Adam's apple rolled slightly, and the light footsteps came from the headset hanging around his neck, it was Qiao Zhuo.

Qin Yuchen pulled out of the stagnation and swiped across the page of photos.

Qiao Zhuo's more than 20 years of life since he was born was unfolded in front of his eyes.

The man's resume is simply perfect. Since elementary school, he has shown a genius ability that is different from ordinary people. The documents keep sliding down, and all the gold medals in physics and mathematics and countless advanced individuals come into view.

He is the number one in his class and even in the school, and he is a talented boy with a bright future in everyone's eyes.

Qin Yuchen took out a piece of mint hard candy from the iron box and threw it into his mouth. When he raised his eyes again to look at the screen, he suddenly stopped.

Surprise mixed with various complex emotions instantly swept Qin Yuchen's whole body.

I saw a few photos of Qiao Zhuo in high school interspersed in the middle of the document. The boy in the red sportswear on the basketball court has a thin figure. The photo captured the second when he jumped high, and the majestic vitality rose from him.His eyebrows swayed, the sun shone on his shoulders, and the sun-like smile on the boy's face at the second of the dunk was forever frozen.

Freeze in this cold file.

Qin Yuchen couldn't help but intensify his grip on the iron box, and he quickly swiped across the page almost in a panic.

The awards for the prodigy continued until Qiao Zhuo's third year in high school, and suddenly, it came to an abrupt end.

Instead, there are countless psychological test results.

C1: 47

C2: 45

C3: 36

Presumably, the Federation has never encountered an evolutionary with a psychological test score below 50. They have taken the test countless times, and the name of the last test result has reached C164.

But the results are without exception.

Shows serious criminal tendencies, extremely indifferent social groups and no trace of human empathy.

In the end, the Federation gave Qiao Zhuo a report on the results of the psychological test.

"Level 1 danger, long-term covert observation is recommended."

That tongue-in-cheek photo still appeared on the last page. The man's eyes were so pale that he couldn't find any trace of human emotion.

The iron box in Qin Yuchen's hand was about to be deformed by him. It was a trap that Qiao Zhuo specially prepared for him.

Qiao Zhuo knew that he would read this file, so he deliberately showed weakness last night, because Qiao Zhuo knew what was recorded in this file, including the photo.

This...a madman with a high IQ!

Did Qiao Zhuo think that he would let him go out of sympathy?

The next second Qin Yuchen came back to his senses, he heard Qiao Zhuo's voice coming from the headset.

Qiao Zhuo lazily asked, "Officer Qin, have you finished watching?"

Qin Yuchen pressed the headset and silently waited for Qiao Zhuo's next words.

Sure enough, Qiao Zhuo spoke again.

He said, "Come up and have a drink with me after watching."

A few minutes later, there was a knock on the door without any surprise.

Qiao Zhuo walked to the entrance and opened the door, only to see Qin Yuchen standing outside the door in a cold coat.

Under Qiao Zhuo's gesture, Qin Yuchen silently changed his shoes and walked into the room. He saw two glasses of champagne on the table in the living room.

"I don't know Officer Qin's taste. I think tomorrow is a working day, so let's drink some champagne." Qiao Zhuo sat on the sofa and raised his legs lazily, with his right hand propping his side face, his beautiful eyes slantedlooked over.

Qin Yuchen still silently walked across to Qiao Zhuo and sat on the carpet.

The sweet champagne flowed down his throat, Qin Yuchen raised his eyelids and stared at Qiao Zhuo for a while, "Your calculations are in vain, I will always believe in the test results of the Federation, you failed all of the 164 tests."

Qiao Zhuo held the champagne glass and clicked his tongue expressionlessly, smacking his tongue provocatively: "What a pity."

Qin Yuchen stood up, his tall figure covered the chandelier on the ceiling, covering Qiao Zhuo completely in his shadow.

Qin Yuchen frowned, and said every word very clearly, "Qiao Zhuo, once I find any signs of crime in you, I will arrest you with my own hands."

Qiao Zhuo was still lazily sitting on the sofa when he heard the words, without any fluctuation, suddenly he looked straight at Qin Yuchen and asked, "Did my calculation really fail?"

Qin Yuchen's arm hanging by his side clenched his fist violently, and the emotion in his eyes instantly sank like water.

Seeing that he didn't speak, Qiao Zhuo raised his glass to Qin Yuchen, drank up the champagne, and said with a faint smile, "Then I really look forward to that day."

"Have a good dream, Officer Qin."