The next day, Felix came to the corridor where the attack occurred last night, and it was not surprising that he met Felch.

The corridor was obviously cleaned up by him, and the water on the ground disappeared. On the wall with the words "The secret room was opened", there was an empty chair leaning against it.

At this moment, he was turning his back to Felix, and he worked hard to scrub the text on the wall with a detergent, but it seemed in vain.

"Mr. Felch."

Felch turned his head, his eyes slammed, his face was filled with abnormal blush, and he mumbled, but when he saw Felix, he greeted him politely: "Professor Happ."

"I'll check out the scene and maybe I can find any clues left."

Felix didn't deal with this Felch much when he was in school. At that time, he did not have Mrs. Loris as his helper, and he was completely immune to his threat with his outstanding magical body spell.

Felch gave up his position and stood aside at a loss. He only revealed his identity as a squin yesterday. Today, facing this genius professor, he didn't want to stay for a second.

"Then, then I'll leave first, professor, I have something to do..."

"Go and do your business," Felix responded, "Oh, by the way." He waved his wand, and the handwriting on the wall faded.

“Huh?”

He was a little surprised and quickly approached the wall and looked up and down the handwriting. "It seemed to be a mandatory magic, but it was not a permanent sticking spell." Felix pointed at the wall with his wand, and soon the handwriting disappeared.

"Thank you, thank you." Felch blushed, said hurriedly, and left quickly without even bringing a cleaning tool.

Felix began to search around, and soon he found a clue.

He squatted on the ground, knocking on his wand with the ring on his left hand, and a large magnifying glass appeared in his hand.

Felix carefully observed the ground, where there was a burning mark.

"What is this? How did it come about?"

Felix raised his head and looked at the girl's bathroom directly opposite. Without thinking too much, he quickly pushed away the copper handle and walked in.

This is a rather dark and wet place, with mottled stains on the walls, the ground full of water, and the tiles on a row of water pools were peeling off. The only source of light was a few black candles.

Resisting the discomfort in his heart, Felix's eyes kept igniting.

A voice suddenly came from the innermost room, "Who is there?" Then, a ghost with a gloomy face rushed out, and pearly glasses covered most of her face.

She looked at Felix and clearly recognized the professor.

The ghost was stunned and looked behind him in disbelief. Yes, this is his chassis, the girl's bathroom...

"Teacher, professor?"

"Hello, Myrtle." Felix's voice was quite calm. He was here to investigate the case, and he had a legitimate excuse, well, that's it.

Myrtle looked at him blankly for a few seconds, suddenly screamed, and the whole ghost flew back into the toilet, and he could even hear a crisp splash of water.

Felix: "..." As for it? I just wanted to ask you something, I couldn't bear the embarrassment.

Felix said: "Myritan, I know you're here, have you seen the attack yesterday..."

"No! Nothing!" Myrtle shouted loudly in the compartment.

Then, he heard the footsteps not far away and was shocked. He quickly put a magic spell on himself, quickly left the bathroom, and passed by a red-haired girl.

It is not scary to be discovered by ghosts, but if you are caught by students...

His reputation was ruined in his lifetime.

In the next few days, he cooperated with several professors to search the entire castle during the absence of class, but naturally he found nothing.

One day in the auditorium, Felix was still thinking about this while having lunch.

"The cause of everything is the Dark King's Horcrux, but it seems useless to know this... I don't know who the heir is, where the secret room is, and where the Horcrux is hidden."

"The secret room, Slytherin, heirs, petrochemicals... these are obviously keywords. But how to connect them?"

Felix always felt that he was very close to the truth, but he was separated by a layer of fog.

"Slytherin...snake?"

He tried hard to recall, trying to uncover the long-clogged memory. He seemed to have seen something, "Harry" was fighting a giant snake. But his memory was quite vague. He was not sure if he had recorded it. In his impression, "Harry" seemed to have solved a large group of dementors by himself.

How is this possible? Can ordinary adult wizards not do it well?

Moreover, how could the Dementor attack the school?

However, Felix quickly warned himself that in the magical world, everything is possible, especially the existence of the "protagonist".

"So, it's very likely that it's true that a giant snake caused the petrification of Mrs. Loris." Felix followed this conjecture and deduced it.

But he had a problem again.

What snake has the power of petrification?

All Felix could think of was Medusa, but this magical creature was extinct.

"It is not ruled out that Slytherin performed blood grafting... Judging from his remaining notes, his research on magical blood veins is very in-depth."

Until lunch, he didn't understand. However, he soon had a new idea and collected rumors about the secret room of Hogwarts over the years and identified them one by one.

Maybe the truth is hidden in the rumors.

...

Three days later, Felix stood opposite a tapestry of "Trolls Fighting Silly Barnabas" on the eighth floor of the castle, watching a silver door slowly appear with a strange expression.

Now, are you looking for it?

He hesitated slightly, and he gently tapped his chest, wrists, ankles, and light flashed across his chest, and then he stepped in.

This is an oversized garbage storage room, with all kinds of waste items piled up into mountains, tattered quills, old books, damaged spectacles... He also saw the Golden Flying Thief with half of his wings missing.

He walked around carefully without finding any clues.

"Is a hidden room?" He could hardly imagine that the proud Slytherin would set up the secret room here.

"However, this room is very hidden. Its magic must be very interesting. We will study it another day." Felix walked out of the room and looked at it reluctantly. The silver door had quietly disappeared.

On the other side—

The trio is also working hard to study the secrets of the secret room, and the "effort" here mainly refers to Hermione Granger.

After reading the information for a few days without success, the loan list for "Hogwarts, a School History" was also ranked for two weeks. The Gryffindor witch finally raised her hand to ask questions in the magic history class, benefiting everyone and obtaining valuable information in the secret room.

Poor Professor Bince had to leave the course and talk about "myths and legends" under the gaze of everyone. After this episode, his originally slow, dry voice accelerated - which made his course hypnosis more powerful than the past.
Chapter completed!