Faced with the sudden appearance of the dark figure, Conan and the others quickly stood back to back, forming a defensive formation.

"Everyone be careful, watch their movements carefully first!" Conan said calmly.

Without a word, the shadowy figures attacked them directly. Ran Mouri delivered a side kick, instantly knocking one of the figures to the ground. Nightshade nimbly weaved among the shadowy figures, continuously throwing punches.

Lin Yu activated his high-tech equipment again, unleashing bursts of electricity that slowed the movements of the shadowy figures. Ai Haibara, meanwhile, took the opportunity to observe the shadowy figures' attack patterns, searching for a rule.

"These people's attacks seem to follow a certain pattern," Haibara cried out.

Upon hearing this, Conan observed carefully and discovered that the shadowy figures would pause briefly after each attack.

"Seize this opportunity to counterattack!" Conan shouted.

Following Conan's instructions, the group launched a counterattack the moment the shadowy figure paused, gradually gaining the upper hand.

Just as they were about to subdue all the shadowy figures, the figures suddenly stopped attacking and quickly disappeared into the darkness.

"What's going on?" Lin Yu asked, puzzled.

Conan frowned: "Things aren't that simple. Let's proceed cautiously."

They continued exploring the manor and discovered many strange rooms. Some rooms were filled with ancient books, while others displayed various strange experimental instruments.

“This estate is full of mysteries,” Ran Mouri said.

They entered a room and found a huge portrait hanging on the wall. The portrait depicted a serious-looking man with a mysterious power in his eyes.

“This person seems very unusual,” Nightshade said.

Just then, the portrait suddenly came to life.

"Ah!" Ai Haibara was startled.

The man in the portrait spoke, "Why have you trespassed here?"

Conan stepped forward: "We received an invitation to come here to find the truth."

The man sneered: "The truth? The truth here is not something you can easily bear."

After he finished speaking, the portrait returned to its original state.

"What exactly is going on?" Lin Yu was very confused.

They continued deeper into the manor and came to the entrance to a basement.

"Perhaps the answer lies below," Conan said.

They cautiously entered the basement, which was filled with a pungent odor. The basement contained many large containers, which appeared to hold something.

"What is this?" Ran Mouri walked closer to a container, wanting to see it clearly.

Suddenly, a hand reached out from the container and grabbed Ran Mouri.

"Ran!" Conan rushed over.

With everyone working together, they finally rescued Ran Mouri.

At that moment, a sinister laugh echoed from the basement.

"Who?" Nightshade looked around warily.

A figure emerged from the darkness; it was a person dressed in a black robe.

“You shouldn’t have come here,” the man in black said.

Conan asked, "Who are you? Why did you lead us here?"

The man in black smiled and said, "This is a test. Only by passing the test will you know the truth."

After saying that, the man in black disappeared.

"A test? What kind of test is this?" Lin Yu asked.

Conan pondered for a moment: "Perhaps we need to unravel the secrets of this manor in order to pass the test."

They began searching for clues in the basement and discovered an old diary.

The diary records the past of this manor, revealing that a terrible experiment was once conducted here, and this experiment seems to be related to the safety of the city.

"It seems we must stop this experiment from continuing," Conan said.

Just then, the lights in the basement suddenly went out, plunging the surroundings into darkness.

"Everyone be careful!" Conan shouted.

Strange sounds came from the darkness, as if something was approaching them.

Ran Mouri gripped Conan's hand tightly: "Conan, I'm a little scared."

Conan comforted her, "Don't be afraid, Ran-neechan, we'll definitely find a way out."

Lin Yu turned on his flashlight, its faint light flickering in the darkness.

Suddenly, a huge monster appeared in front of them.

"What is this?" Nightshade asked in surprise.

The monster lunged at them, and everyone scrambled to avoid it.

During his escape, Conan discovered the monster's weakness.

"Attack its eyes!" Conan shouted.

The group launched an attack on the monster's eyes, and the monster roared in pain.

After a fierce battle, they finally defeated the monster.

"I'm so tired," Lin Yu said, panting heavily.

“But we can’t rest yet; we have to keep looking for clues,” Conan said.

They continued exploring the basement and finally found the device controlling the experiment.

“If we destroy this device, we can stop the experiment,” Conan said.

Just as they were about to destroy the device, the man in black robes reappeared.

"Do you really think it's that easy to stop us?" the man in black robes said.

"No matter what, we have to give it a try," Conan said firmly.

They rushed towards the device and engaged in a final battle with the man in black...