As he said that, he took out his ID and handed it to the police for a check. "This person is one of the suspects I am investigating." The police took the ID and looked carefully, then nodded: "So that's it. But the argument you had just now was too loud and attracted the attention of the villagers, so we rushed over to take a look."

After hearing this, Qin Yuan scratched his head awkwardly: "Sorry for causing trouble for you." Then he turned to look at the driver, "You can tell me the truth now, right? How much do you know about Zhao Shuang?"

However, the driver just lowered his head and did not speak, and his body was still trembling slightly. Seeing this, the police spoke, "If you know anything, tell us, we will protect you from safety." After hearing the police's words, the driver seemed to be a little shaken. He slowly raised his head and looked at Qin Yuan and the police, with complex light flashing in his eyes.

After a period of silence, he finally spoke: "Okay... I'll tell you everything I know..."

The night was hazy, and Qin Yuan and the driver sat in a quiet corner in the countryside, surrounded by the chirping of insects and the caress of the breeze. After chasing and inquiring along the way, Qin Yuan finally made the driver willing to speak.

"What happened that day?" Qin Yuan's tone was firm and calm, and his eyes were directly at the driver.

The driver swallowed and seemed a little nervous: "Zhao...Mr. Zhao Shuang did pick up a gangster into the car that day. I didn't know what they had discussed in the back. But afterwards, I heard Mr. Zhao's roar and the begging for mercy."

Qin Yuan frowned: "Did Zhao Shuang threaten that little gangster?"

The driver nodded: "Yes, Mr. Zhao was very angry. He said that the gangster betrayed him, and then... he took out a knife."

"Knife?" Qin Yuan's voice increased a little, "What did he do?"

"I...I didn't dare to look." The driver said in a trembling voice, "but I heard the screams of the gangster and Mr. Zhao's scolding. Later...the voice calmed down."

Qin Yuan took a deep breath: "What about after that?"

"After that, Mr. Zhao asked me to drive to a building." The driver recalled, "When they entered the building, Mr. Zhao asked me to wait outside. I... I have been in the car for a long time and have never left."

Qin Yuan stared at the driver's eyes: "Then do you know what happened in that building?"

The driver shook his head: "I don't know, I really don't know. I'm just waiting in the car to wait for them to come out."

Qin Yuan was silent for a moment, as if judging the authenticity of the driver's words: "Then have you seen or heard anything unusual?"

"No." The driver whispered, "I saw nothing, and I heard nothing."

Qin Yuan frowned, obviously not satisfied with the answer. He stood up, looked around, and suddenly asked, "Where is that building?"

The driver was stunned for a moment, then pointed to the distance: "It's in that direction, but... but I can't remember the specific location."

"Can't remember?" Qin Yuan's voice suddenly became stern, "Are you sure?"

The driver was startled by Qin Yuan's momentum and quickly explained: "Really, I really can't remember it. The building is very ordinary, I... I didn't pay much attention at that time."

Qin Yuan looked at the driver, and a trace of disappointment flashed in his eyes. He knew that he might never get more information from the driver. But he did not give up and decided to investigate the mysterious building himself.

"Okay." Qin Yuan said at the end, "If you remember something or have any clues, remember to contact me immediately."

After saying that, Qin Yuan turned around and left, leaving the driver in a daze.

In the next few days, Qin Yuan began an investigation of the building. He visited nearby residents and investigated the ownership and use of the building, but found no valuable clues. The building seemed to be just an ordinary office building with no abnormalities.

However, Qin Yuan did not give up. He knew very well that there were too many mysteries in this case that had not been solved. Why did Zhao Shuang threaten that gangster? What did they do in the building? All of this needs to be revealed.

Just when Qin Yuan was in trouble, he suddenly received a mysterious call. The voice on the other end of the phone was low and mysterious: "Do you want to know what happened in the building that day? I know the answer."

Qin Yuan was shocked and he immediately asked: "Who are you? What do you know?"

But the person on the other end of the phone just smiled and hung up the phone. Qin Yuan held the phone, his heart full of doubts and expectations. He knew that this mysterious phone might be the key to him revealing the truth. So he decided to track the source of the phone and find out the identity of the mysterious person.

A larger investigation and tracking operation began. Qin Yuan used all the resources he could use and finally found the mysterious man's hiding place. The moment he pushed open the door, he discovered a shocking fact - the mysterious man turned out to be Zhao Shuang's driver!

"Why did you call me?" Qin Yuan asked, staring at the driver tightly.

The driver smiled bitterly: "Because I know too much. Zhao Shuang won't let me go, I just want to save my life."

Qin Yuan took a deep breath: "Then tell me, what happened in the building that day?"

The driver was silent for a moment, then slowly spoke: "That day, Zhao Shuang brought the gangster into the building. They entered a room and I was waiting outside. But soon after, I heard fighting and screams coming from the room. I was very scared, but I didn't dare to go in and see. Later, Zhao Shuang came out alone, and his clothes were covered with blood. He told me to tell me not to say anything, otherwise I would kill me."

Qin Yuan was shocked after hearing this. He finally understood the truth of the entire case. It turned out that Zhao Shuang had really fought against the gangster and might have killed him. And the driver, because he knew too much, was always threatened by Zhao Shuang.

"Are you willing to testify?" Qin Yuan looked at the driver and asked, "If you want, I can protect you."

The driver hesitated for a moment, then nodded: "I do."

The morning sun shone through the gaps in the curtains and mottled on Qin Yuan's face. He rubbed his sleepy eyes, and was still thinking about the agreement he had with the driver last night. Today, he planned to take the driver to identify Zhao Shuang and bring the criminal hidden in the dark to justice.

However, when Qin Yuan came to the driver's house, he felt a strange atmosphere. The door was covered with a faint sound, and there was no sound in the room. He pushed the door open and saw a messy scene. The furniture was knocked over to the ground, and the paintings on the wall were also crooked, as if telling that there had been a fierce battle here.

Qin Yuan's heart sank suddenly, and he quickly walked towards the driver's bedroom. The moment the door was pushed open, he saw a scene that shocked him - the driver was lying on the bed, his face pale, and no longer had the breath of life.

"This... how is this possible?" Qin Yuan murmured to himself. He couldn't believe his eyes. The driver who was talking to him last night died at home strangely today.

Qin Yuan immediately called the police and began to look for clues in the house. He found that there was no obvious trauma on the driver, but his face was extremely pale, as if he was scared by something. Although the house was messy, no obvious signs of invasion were found.

"Is it Zhao Shuang?" A thought flashed through Qin Yuan's mind. He immediately remembered the conversation with the driver last night. The driver mentioned that Zhao Shuang had threatened him. Could it be that Zhao Shuang actually attacked the driver in order to cover up his crime?

At this moment, the police arrived at the scene. They began to investigate the scene and asked about Qin Yuan's situation. Qin Yuan told the police about his conversation with the driver last night and his own speculation.

"We think your guess is very reasonable," said a policeman. "Zhao Shuang is a major suspect in the crime. We will investigate him immediately."

However, when the police investigated Zhao Shuang, they found that he had never left his home. His surveillance camera was installed in his home, which clearly recorded his every move last night. Zhao Shuang was also shocked and puzzled by the driver's death, and insisted that he had nothing to do with the matter.

"How is this possible?" Qin Yuan felt very frustrated after hearing the news. He originally thought he had found a breakthrough in the case, but unexpectedly he was in a deadlock again.

"Maybe we've missed something," said a police officer. "We need to re-clip the clues of the case and look for possible loopholes."

Qin Yuan nodded, and he decided to investigate the case himself. He believed that as long as he searched carefully, he would be able to find the truth.

The night was as bright as ink. Qin Yuan stood alone in front of the ruins of the driver's house, with a firm light flashing in his eyes. He knew that there must be clues to reveal the mystery of the driver's death in this messy scene. He squatted down, carefully observed the traces on the ground, and gradually outlined a picture in his heart.

A few hours ago, it was still quiet. The driver returned home as usual, but unexpectedly, death was approaching quietly. Qin Yuan inferred through clues at the scene that this was a premeditated murder.

"Footprints, handprints... and these strange friction marks." Qin Yuan murmured to himself, his fingers gently scratching the marks on the ground, "What truth do these point to?"

At this moment, a burst of rapid footsteps broke the silence of the night. Qin Yuan looked up and saw several policemen coming hurriedly.

"Qin Yuan, have you found anything?" asked the policeman in charge.

Qin Yuan stood up and pointed to the traces on the ground: "These traces are probably left by the murderer. We need to track them and find the murderer's hiding place."

The police nodded and agreed. So a tense tracking operation began in the night.

Qin Yuan led the police to follow the traces, crossed several streets and alleys, and finally arrived in front of a remote abandoned warehouse.

"It's here." Qin Yuan pointed to the warehouse and said, "The murderer is probably hiding inside."

The police quickly surrounded the warehouse and approached carefully. Qin Yuan stood aside, staring at the entrance of the warehouse, waiting for the murderer to appear.

Suddenly, a sound came from the warehouse. Immediately afterwards, a figure rushed out of the warehouse and tried to escape.

"Stop!" Qin Yuan shouted and chased after him.

The two sides started a fierce pursuit in the night. The murderer seemed to be very familiar with the terrain and kept using obstacles to try to get rid of Qin Yuan. But Qin Yuan chased him reluctantly and refused to relax.

Finally, at a corner, Qin Yuan successfully intercepted the murderer. He gasped and stared at the person in front of him: "You are the murderer who killed the driver!"

The murderer raised his head and showed a fierce face: "Who are you? Why do you say I am the murderer?"

Qin Yuan sneered: "The traces of the scene, your escape route... and your face have fully proved your crime. Now, what else do you have to say?"

When the murderer heard this, his face turned pale. He stared at Qin Yuan with wide eyes, as if he wanted to find a chance to escape. But Qin Yuan's eyes were firm and cold, which made him feel desperate.

"I...I..." the murderer stammered, "I didn't mean it, he...he discovered my secret, I can only..."

"Your secret?" Qin Yuan frowned, "Say, what secret are you hiding?"

The murderer trembled his lips, as if he wanted to confess everything. But at this moment, a sudden burst of siren sounded from afar. It turned out that the reinforcements arrived at the scene.

"Great, reinforcements are coming!" a policeman shouted excitedly, "Hurry up, take this murderer back for interrogation!"

Seeing this, a hint of panic flashed in his eyes. He suddenly broke free from Qin Yuan's shackles and tried to escape again. But this time, he could not escape the siege of the police. Soon, he was subdued to the ground and put on handcuffs.

"Want to run away?" Qin Yuan looked at the murderer coldly, "Now, you no longer have a chance."

After saying that, he turned around and walked towards the police: "Let's go and take him back. We need to pry out more secrets from him."

In the police station, the murderer was closely guarded. Qin Yuan and the police interrogated him overnight, trying to reveal the secret behind him. At first, the murderer tried to deny and quibble. But under Qin Yuan's clever questioning, he gradually revealed his strength.

"Tell me, why did you kill the driver?" Qin Yuan asked coldly, "What secret did he discover about you?"

The murderer was silent for a moment and finally spoke: "He...he discovered my true identity. I was originally a member of a gang, but I betrayed them for some reason. I have been avoiding their pursuit and living in seclusion in this city. That day, he accidentally saw my tattoo and recognized my identity. I was afraid that he would report it to me, so I could only..."

Qin Yuan frowned when he heard this: "For this reason, did you brutally kill him?"

The murderer lowered his head and was speechless. He knew that his crime was irreversible.

"Okay." Qin Yuan took a deep breath, "Now, you will pay the price for your crime."

In the interrogation room, the atmosphere was tense and heavy. The murderer sat on an iron chair, his head lowered, and his hands were handcuffed to the cold metal table. Qin Yuan stood in front of him, his eyes as if they were torched, and he exuded an unquestionable majesty.
Chapter completed!