50 Secrets of the Library

That evening, after most people had fallen asleep, Casimir sneakily exited the dormitory, deciding to make use of this chance to secretly enter the library once again in search for books with mysterious contents.

Since the next day was the start of the holidays and the day which most students would be heading back to their homes, tonight was the last night in which Casimir had the opportunity to search for such books.

Knowledge was power, and power is essential. Unfortunately, today was Friday. The day in which many mysteries in the school are slowly revealed.

There were stairs that would lead to different places in the castle that would normally stay hidden, doors that would open to a room that wasn't there before, and passages that didn't exist on the other days of the week. If Casimir wasn't in possession of the compass, he would've gotten lost long ago already.

After passing through unfamiliar corridors and avoiding Filch a few times, Casimir finally arrived to his destination and discovered that... The library was locked.

No worries! It can be fixed with a simple "Alohamora!".

And thus, the library was unlocked. Yet, what greeted his sight was not the normal library on normal days. Instead, it was like the library became a dark dungeon. But, this dark dungeon was filled with books so, maybe, it could still be considered as a library of some sorts..?

Well then... Time to hunt for some books, I guess?

Casimir began to search through the piles of seemingly abandoned books, in search of hidden treasures which were buried under piles of rotting papers and moldy objects which had rusted over for who knows how long already.

Eventually, under the piles, Casimir found books which could be considered as in a somewhat decent condition. At least they weren't covered in mold and the words were still readable to an extent.

Most Dangerous Curses and the Killing Arts... Refining the Body into a Magical Artifact... Ancient Bloodlines and How to Acquire Them... Horcruxes and the Fountain of Youth...

No wonder these books were all abandoned! They pretty much reeked of the dark arts!

I'll take them! Casimir grinned widely and showed all presentable books that he could find inside his bag, humming a small tune as he did so. It was obvious that he was in a good mood.

Afterwards, seeing as the time was nearing midnight, he decided to end his search for the day and come back after the holidays. Who knows, there might be other good things hiding underneath the moldy piles. He just hadn't discovered them yet.

Unfortunately, when he opened the door to the library once again, he discovered that... The corridors had disappeared.

Melecrit's mom! I was scammed!

...

It has already been nearly ten minutes since he had been walking along this seemingly never ending hallway. Once again, Casimir tried to use his compass to find the right direction towards his room but, just like the previous tries before, the compass pointed straight ahead... Wait, no!

It was changing directions!

The arrow of the compass spun around wildly, not staying at the same direction for too long before changing again. This confused Casimir greatly.

How can the direction change so fast? Is the compass broken? Impossible!

In the end, Casimir had to adjust the way he held the compass and, when he held the compass vertically, the arrow finally paused, showing north.

Up...? Casimir glanced upwards into the ceiling, unsure if the compass was showing the right direction.

After grabbing a long, rusty rod, Casimir began to poke at the ceiling and, to his surprise, he did not feel the rod make any contact with anything solid. Instead, the rod directly passed through the ceiling.

But, before he could ponder more about the matter, he felt his body being sucked into the ceiling and, the next thing he knew, he was already standing in the Slytherins common room.

There was actually a hidden hallway underneath the dungeons!

Casimir felt as if he had just found out a secret of the castle. That just means...

He now has a secret base in which he could train in peace! Unfortunately, he could only enter it during Fridays.

But... Maybe, there are other entrances to the place! He just hadn't found them yet!