Forensic Doctor: Finding the Way Back to the Mystery of Ancient Realms

As Situ Han pressed the hidden switch on the wall, a secret passage slowly appeared in front of the two of them. The faint light at the end of the passage seemed to foreshadow new clues and challenges. Xu Youran and Situ Han looked at each other, and without saying anything, they understood each other's determination.

Xu Youran (quietly): "It seems that we still have a long way to go."

Situ Han (nodding, with deep eyes): "Yes, but as long as the truth is still there, we can't stop."

The two walked into the passage, their footsteps echoing in the empty space, with a hint of subtle tension and expectation. Soon, they arrived at the other end of the passage - the most famous dance hall in S City, a world that seemed prosperous but actually had undercurrents.

Inside the dance hall, the lights were bright and the music was melodious, but this superficial prosperity could not cover up the coming storm. Xu Youran and Situ Han changed into casual clothes, blended into the crowd, and began their investigation.

The entrance to the basement of the dance hall was cleverly hidden behind an inconspicuous utility room. The two carefully unlocked the door, and a cold breath hit them in the face, forming a sharp contrast with the bustle outside. In the basement, the dim light barely illuminated the surrounding scene, and the air was filled with an indescribable sense of depression.

Xu Youran put on gloves and carefully checked every detail on the ground, not missing any possible clues. She found a few tiny footprints on the ground, as if someone had stayed there.

Situ Han (squatting down, standing shoulder to shoulder with Xu Youran): "These footprints are very fresh, they must have been left recently."

Xu Youran (nodding, looking more focused): "Also, the size and shape of the footprints look like they belong to the same person."

The two continued to explore and soon found a small room that was deliberately hidden. In the room, a shabby table and a few chairs looked particularly abrupt, and on the table lay a yellowed diary and an unopened letter.

Although there is no clear victim in this case, Xu Youran and Situ Han know that they must find the person involved in this case as soon as possible. After some inquiries, they learned that Xiao Cui, a dancer in the dance hall, had heard strange noises near the basement.

Xiao Cui (still terrified): "That night, I passed by the basement and heard low moans coming from inside. It sounded like someone was crying, or... praying. I was so scared that I ran away."

Xu Youran (gently comforting Xiao Cui): "Don't be afraid, we will protect you. Are you sure that the sound came from the basement?"

Xiao Cui (nodding her head like crazy): "It's absolutely true. I definitely didn't hear it wrong."

Based on the clues provided by Xiao Cui, Xu Youran and Situ Han began to track down possible suspects. They found that the manager of the dance hall, Li Si, had been behaving strangely recently, often going in and out of the basement late at night, and seemed to be worried every time he came back.

In order not to alert the enemy, the two decided to secretly observe Li Si's every move. After careful arrangements, they finally witnessed Li Si sneaking into the basement on a stormy night.

Situ Han (lowering his voice, speaking to Xu Youran): "See, there's something wrong with him. Let's follow him, but be careful."

The two followed Li Si silently, and saw him enter the basement and walk straight to the hidden small room. In the room, Li Si lit an oil lamp and began to mutter to himself in front of the diary and letters, as if he was talking to something invisible.

Xu Youran (startled, whispered to Situ Han): "He...what is he doing?"

Situ Han (brows furrowed, eyes sharp): "I don't know, but we are sure that he must be inextricably linked to this case."

As the investigation deepens, Xu Youran and Situ Han gradually uncover the secret behind Li Si. It turns out that Li Si is one of the survivors of the S City massacre thirty years ago. He works in the dance hall under an assumed name in order to find the truth of the massacre and avenge his family.

The diary and letters were the evidence and clues he had collected over the years. He talked with his deceased relatives in the basement every night to comfort his lonely and painful heart.

Li Si (with tears streaming down her face, facing the questioning of Xu Youran and Situ Han): "I know I can't escape for long, but I really don't want to. I just want justice for my family!"

Xu Youran (with a complicated tone): "Justice will come naturally, but you can't seek it in your own way."

Situ Han (in a deep voice): "Li Si, are you willing to trust us? We will help you find the real murderer and ensure justice is served."

Li Si looked at the two people's determined eyes and finally nodded. He handed over all the evidence and told everything he knew in detail. It turned out that the murder case thirty years ago was not a simple revenge, but was related to a dark force in S City at that time. This force involved politics, business and even the military, and was complicated and difficult to shake.

Xu Youran (pondering for a moment): "So, behind every seemingly bizarre case, this force might be at work?"

Situ Han (nodding, his eyes more determined): "I'm afraid that's the case. We need to be more cautious and make sure that every step can reveal more truth."

In the following days, Xu Youran and Situ Han not only continued to follow the clues provided by Li Si, but also investigated the background of the dark force through various channels. They found that this force seemed to have inextricable connections with many important figures in S City, including some politicians and businessmen who seemed glamorous on the surface but actually had hidden stains.

At the same time, a new case occurred in S City. A well-known businessman was found dead at home in a strange way, and clues similar to those in the previous case were left at the scene. This case once again pushed the panic of the people to a climax, and also made Xu Youran and Situ Han feel unprecedented pressure.

Su Wanqing (appeared in front of the two of them at the right time, with a barely perceptible sneer): "It seems that you are getting more and more troubles."

Xu Youran (looking at her coldly): "Su Wanqing, you always like to show up at this time, do you know something?"

Su Wanqing (slightly raised her lips): "Me? I know nothing. I'm just reminding you that some secrets are better left dormant forever."

However, Xu Youran and Situ Han were not shaken by Su Wanqing's words. They knew that only by revealing all the secrets could S City see the light again. So they worked more closely together, using their own wisdom and courage to get closer to the core of the dark forces step by step.

In a late-night raid, Xu Youran and Situ Han finally found a key stronghold of the dark forces. However, when they were about to destroy the stronghold, they unexpectedly discovered a shocking secret - this stronghold was directly related to the murder case thirty years ago!

Situ Han (shocked, then quickly calmed down): "It seems that we are only one step away from the truth."

Xu Youran (clenching fists, eyes blazing): "No matter how many difficulties lie ahead, we cannot give up. For the sake of those innocent victims and for the future of S City, we must completely eradicate this dark force!"

Just as the two were about to continue their investigation, a burst of hurried footsteps interrupted their thoughts. A mysterious figure suddenly appeared in front of them, holding an encrypted letter in his hand.

Mysterious Person (whispering and hurriedly): "This is for you. After reading this, you will know what to do next."

After saying that, the mysterious person disappeared into the night. Xu Youran and Situ Han opened the letter and saw that it was written in cipher: "The basement of the dance hall, the key to the truth."

The two looked at each other, their hearts full of doubts and expectations. They knew that this letter would be the key to solving all the mysteries. And what they were about to face next would be a more complex and dangerous challenge.

Xu Youran (firmly): "Let's go, Situ Han. Let's go back to the dance hall and continue our investigation."

Situ Han (nodding, with determination in his eyes): "Okay, let's work together to uncover the mystery of S City that has been going on for thirty years."