On the train, Holmes, Watson, Lestrade, and Gregson sit together in a private cabin. The atmosphere in the room was silent. No one said anything. They all turned their heads in different directions. The sun was about to set, and it took more than an hour to reach the destination.

"Come on, tell me the details of this case." The detective opened the conversation in a soft voice, hoping to relieve the tense atmosphere.

Gregson sat opposite, loosen the knots between the eyebrows. He pushed on his glasses and began to explain with a cold expression.

"Where we are going is a boarding school located next to Epping Forest. Both the school and the surrounding land belonged to the Walther family. The current ruler is Lord Tommen Walther Sr., and the adjacent Epping Forest local villagers called it 'Fairy Forest'"

"Fairy Forest?"

Sherlock Holmes repeated. He had never heard of it. Gregson nodded.

"I think it's called that because the forest is so wide and beautiful that it's like being in a fairyland. As for the in-depth details, waiting to ask the local people will be more clear." Gregson took out a notebook and looked at the information. He pushed up the square- glasses again before continuing.

"Last Tuesday, Mr. Jonathan Walther, a math teacher and younger brother of Lord Walther, disappeared. After reporting to the local police, they recruited people to help find him but can't find him. By Friday, the school's people saw a local policeman walking out of the forest in a state of crazy madness, rant, and died later. This incident caused panic and spread negative rumors about the Fairy Forest. And today, I received an urgent telegram saying that the Lord's only son…Tommen Walther Jr., had mysteriously disappeared from school."

Gregson closes the notebook as if it's over. Holmes listens.

"I see. It sounds a very interesting case," said Holmes. Two of the landowner's family mysteriously disappeared. And also the forest of faeries that the police entered and came out to become insane. The detective thought, his black eyes gleaming to searching for the answers.

"You think so too, don't you?"

Gregson said excitedly. Holmes looked up at the man in front of him. The eyes behind the frame of the glasses seemed to have a fire burning in Gregson's eyes.

"There is no doubt that if I can close this case. My reputation as Scotland Yard must be as famous as the Baron Irwin case. The siege plan was perfect. After all, this case..." Gregson took a break to turn his gaze to Lestrade, who was sitting next to him. and said the words slowly and clearly.

"I alone can solve the case successfully. I don't know why Scotland Yard would send so many people."

"Heh…" Lestrade furrowed his brows, quirking his head, "Such an annoying man as always."

"Hmph, don't forget, Lestrade. Your reputation on par with me is because of the constant support of Mr. Holmes," said Gregson.

"Did you ever look at yourself?" The wrinkle between Lestrade's brows deepened in extreme annoyance. "The person who planned to arrest Baron Irwin until you got praise was Holmes, not you."

"I'm learning how to think like Mr. Holmes and using it for self-improvement. Not like you."

"Fine, fine, whatever you want to say. It's enough for me to finish the case," Lestrade said before finishing it. "And, of course, I will close this case before you!"

"What..." Gregson gritted his teeth. A cold glint flashed through his glasses as if stabbing his opponent.

Sherlock Holmes sees a war of saliva that is unlikely to end easily. Then chuckling lightly, he pulled the tip of his hat down to cover his face and adjusted his sitting position so that he could lean back comfortably. And whispered to Watson sitting next to

"I'm going to take a nap. If these two starts, then it's going to be long and never end."

Watson nodded slightly. He knew that lately; Holmes was so obsessed with research that he rarely slept. Watson took his eyes off the two inspectors sitting across. He saw a group of passengers walking through the room they were in. Watson thought it was a good idea for Holmes to work outside of London.

There was one thing he hadn't told...

Over the past few days, Watson always sensed some suspicious. It was as if someone was constantly keeping an eye on them. But when he began to search for that person. The opponent would then retreat as if that person knew he had already realized. It's like this repeatedly.

But he didn't have any clear evidence, so he hadn't spoken. So Holmes's absence in London for a while was a good safety. But he must find that person who is secretly watching them.

Watson thought to himself as he listened to the sound of his partner's steady breathing until the target station.

........................................................................

When reaching the target station. They had to use a carriage to go to the school. Lestrade was the contact person for the carriage hire. When he said, that want to go to a school next to Epping Forest. The coachman's face turned pale as if he had heard a terrible curse.

"Why would adults go to the Fairy Forest? You'll die right away." When the coachman about to run away, Gregson then stepped in to help. Explain that they are Scotland Yard from London, and where they go is not in the forest but in schools. With a polite manner, calm and relaxed than Lestrade, the coachman finally nodded in agreement.

"Okay, I'll drop you off near the school gate. But you outsiders should keep that in mind. No matter what, do not go near the fairy forest," the coachman repeated.

"Watson, do you think it's strange that the coachman emphasizes that why 'adults' are going to the fairy forest?" Holmes whispered to Watson.

"If villagers believe that an adult goes in and dies," Watson said, "It means there are people who go into the forest without dying."

Holmes gave a meaningful smile and stepped onto the carriage. Looking at the expansive green scenery, the coachman shouted and pointed to the fence demarcating the land that the whole belonged to the Walther family. Until they saw a large, dome-shaped building that looked majestic in Baroque style.

"Here, this is all I can send you guys. Don't forget, don't go near the forest," the coachman reiterated for the last time. After receiving the wages, he galloped away immediately. Act as if the air around here is poisonous; if he stays for a long time, it will be horrible.

"Is that it? The fairy forests?"

Sherlock Holmes pointed to a green wave that stretched as far as the eye could see. Then look at a boarding school built on the edge of a forest without walls or fences.

"It's just plain fertile forest from here," Watson said.

"Hey, you two. Come on now."

Lestrade's voice called to walk into the school. Make Holmes and Watson break from the sea of ​​green forests and walk past the stone arch. Just then, in the hallway, two men hurriedly walked towards them with an apologetic look on their faces.

Leading was a tall, skinny man, about 30, wearing a black sleeveless robe, a leadership personality. And the other man's stride was about two paces slower than the first man. Partly because of the rather chubby shape, wear the same robe, and the droopy appearance made him look like a kind person.

"Hello, you must be Scotland Yard from London," the first man greeted. "I am the principal of this school. Professor Langdon Knox.

"I, Vice Principal, Professor Phillip Gardner, thank you for coming here. And please forgive our rude manners for not sending people out to pick you all up. Since that happened, no one wanted to come close to the school again. Before I saw the telegram… I'm very sorry."

"I'm Inspector Tobias Gregson," Gregson shook his hand, politely greeting the Principal and Vice-Principal.

"Lestrade." Lestrade shook hands next and open his hands to the two. "I introduce the adviser of this case. Detective Sherlock Holmes and his assistant John H. Watson."

"Hello" Holmes shook hands, followed by Watson.

"Alright, now it's late. You must be tired from traveling." Phillip Gardner met the four guests' eyes with a friendly smile. "We have prepared two rooms. Make yourself at home. If you need anything, please tell me immediately, don't be considerate."

"Take it easy today. Tomorrow morning I'll tell you all the details," said Langdon Knox in a low voice.

That night, after having dinner with the Principal and Vice-Principal, they dispersed into the bedroom provided by the school. In the room, there are two beds separated by two writing desks. Near the bed, there is a large window. If the curtain is not closed, the black sky and stars will be visible.

"Good night, Watson."

Holmes said as he pulled the blanket over him. He flipped over and lay on his side, making a comfortable position and closing his eyes.

"Good night"

Watson said softly. He lay on his back, clasping his hands on his stomach. Green eyes stared at the ceiling silently. For a doll like him, even if he doesn't sleep, it doesn't make his body tired or sleepy tomorrow. But since he chooses to be Holmes' partner, it is important to blend in with normal human activities. Watson closed his eyes.

Weeeeeeee - - - - - - - - -

Suddenly, Watson opened his eyes and sat up in the dark. 178 minutes had passed since he closed his eyes. He heard a strange sound. A long, high-pitched sound echoed in his ears. Watson immediately turned to look at his partner. But the sound of Sherlock Holmes' breaths told him that he was still asleep as if he hadn't heard a strange sound.

"Holmes, Holmes, wake up." Watson got out of bed. Hold his partner's shoulder and shake gently. "I heard a strange sound."

"Huh, sound…?" Holmes frowned; his head still numb because he had just woken up. He leaned up all ears, listen carefully, and asked,

"What sound? Have it quiet?"

"Still ringing, didn't you hear it?" Watson asked. Until now, the sound still rang in his ears. And the volume is not so low that humans can't hear. "The whistle… sharp."

Holmes listened intently again. Tonight very quiet night. He couldn't even hear the sound of wind or insects. Finally, he shook his head.

"I didn't hear at all. But I believe you must have actually heard some voices."

Holmes's eyes didn't have the slightest hint of doubt or suspicion at Watson's words.

"Hmm, there's a voice you heard. But I didn't hear." Sherlock Holmes got out of bed. Caressing his chin thoughtfully, "I don't think we should go out and wake Lestrade or Gregson to ask about the sound. Maybe it's a feature of Watson's doll, so you're the only one who hears it."

"You mean it's a voice that humans can't hear?" said Watson.

Holmes smiled with an extremely interesting expression.

"Can you tell me where the sound came from?"

Watson closed his eyes, focused his senses on listening.

"Still can't determine the exact location. But in this school, there is no place where I cannot hear."

He opened his eyes and walk to open the window, lean forward, staring at the forest engulfed in darkness.

"There was a sound from the fairy forest."

When Watson turned around, he saw Holmes wearing a coat. In his hand, the lantern is ready.

"Let's go out and have a look."