In the deepest corner of the prison, a transparent cloak was blown up by the wind, revealing the situation underneath.

Invisibility cloak... Sean's pupils narrowed and he raised his wand.

"The invisibility cloak is coming." He aimed at the invisibility cloak on the ground.

But, no response.

There is only one invisibility cloak that can counter the incoming curse, and that is the one inherited from the Potter family and one of the Three Hallows of Death.

And Sean finally confirmed the fact that Harry's invisibility cloak had probably been swapped a long time ago, and the incident that James had mentioned about the burglars at the Potter's house was probably because someone had replaced the invisibility cloak.

But, why is the invisibility cloak in the basement of Nurmengard?

Sean held up his wand and checked it carefully to make sure there was no danger before walking over and picking up the invisibility cloak on the ground.

Feeling the feel in his hands, Sean silently compared his own invisibility cloak in his mind.

The material is somewhat similar, but this one is lighter and silkier.

As soon as the invisibility cloak was picked up, he saw the ground that had been covered just now.

"This is……"

On the ground just covered by the invisibility cloak, there are dense ancient runes carved on it.

These obscure ancient words were carved directly on the ground, and there was some gold and red mixed powder in the indentations on the stone slab.

Judging from these traces alone, this magical imprint composed of ancient runes has lasted for a very long time.

Magic based on runes can be broadly divided into two types. One is ancient magic. Wizards use runes to communicate the magic in their bodies, and then use the combination of ancient runes to communicate with the rules to release magic.

Damn, this is also the current direction of Sean's study.

The other is that the wizard uses gold powder, silver powder and other magical materials to directly outline the rune symbols, and then uses the magic combination to activate these magical text symbols, so as to exert a continuous magical effect. Dumbledore once demonstrated

Experience such profound magic.

This kind of magical imprint carved on the ground belongs to the second type, but it is more difficult - this almost turns the carrier used for seal carving into a powerful magic prop, a piece of magic that can continue to exert effects.

Array diagram.

Sean's knowledge of ancient runes was far from enough, but he could still discern the meanings represented by some symbols.

"This... seems to be a whole made up of multiple magic script brands..." Sean frowned and muttered in a low voice.

The magic script mark in front of me is very complex, and the wizard who carved the symbols must have had a very deep study of ancient runes.

And Sean could only barely make out the meaning of the combination of several magic words. One of them should be the magic word brand of life support - this kind of brand can maintain the vitality of people in the body, and they can survive even if they don't eat.

Of course, it won't feel good.

There is also a magic script brand for deep hypnosis. The hypnotic effect of this thing is exaggerated - but if you want to maintain the effect of the magic script brand all the time, you need a lot of magic power, so now wizards prefer to be in a coma at once.

curse.

This is only the effect that Sean can determine. There are at least fifteen kinds of magic combined on the entire ground covered by the invisibility cloak, and all of them are very advanced. Sean can only look at it.

They all looked confused.

But... Sean frowned tightly.

The key points of the magic array have been destroyed, otherwise Sean would be affected if he stepped into it.

It seems that most of the functions of this profound magic array lie in "restrictions", just like...

It's like someone is locked up here...

This guess made Sean break into a cold sweat.

The invisibility cloak and the extremely profound rune diagram imprisoned a person in the deepest prison underground in Nurmengard...

And that person has obviously broken free now.

Who is this person and why does Grindelwald keep him here...

etc……

Sean noticed something was wrong.

The reason why he found this place was because of Dumbledore's prompt. To be precise, it was the prompt from the fifth person in 1899. Of course, Sean had already assumed that person was Dumbledore.

Although Grindelwald reminded himself to think carefully about what Dumbledore said, this person was obviously imprisoned in Nurmengard - logically speaking, Grindelwald certainly knew who was imprisoned in the school he established.

.

However, Grindelwald reminded himself to look for Dumbledore, and then Sean found this place.

This is unreasonable. If Grindelwald wanted Sean to know, there was no need to bother.

That is to say, Grindelwald has no idea who is being held here. No, he may not even know who is being held here. He just thought that what Dumbledore said had deep meaning, so he reminded Sean.

Sean stood up slowly, still holding the real invisibility cloak in his hand, and looked at the ancient runes on the ground with complicated eyes.

Dumbledore was reminding himself that this man who was no longer bound was the key to the whole mystery...

Sean took a deep breath, took out a pen and paper, and spent a while copying the entire rune symbol.

After taking one last look, he put away his invisibility cloak and walked out.

Before leaving, he hesitated for a while, and finally chose to repair the exploded iron door. The invisibility cloak had been taken away by him, and it would be better to hide the magic circle diagram inside to avoid students wandering around in the middle of the night.

Found something strange here.

It was already evening when he returned to Hogwarts. Sean had been busy checking his memory, and he hadn't eaten anything since noon.

However, he really has no appetite for food.

Pulling several cushions together, Sean lay down and looked at the dark ceiling, thinking about the news he got today.

At present, there are several important points that Sean still has not learned the truth about.

Dumbledore must have returned to 1899 through the time turner, but Sean believed that he was definitely not just trying to remind himself that he should have other things to do, otherwise it would not have caused such a serious incident.

Time travel accident.

Another point that concerned Sean very much was the time travel accident that Newt mentioned that happened in 1899.

This makes Sean a little confused, because the time travel accident technically happened in the "now" - that is to say, in 1899, someone also conducted a very long-distance time travel, and that person

What is the purpose of man?

In addition... Sean touched the invisibility cloak in his hand. This Deathly Hallows was not much different from an ordinary invisibility cloak.

Why should I trade my invisibility cloak?

If you just want to conceal the existence of the person in the underground prison, an ordinary invisibility cloak should be able to do the same. Of course, this may take into account the validity period of ordinary invisibility cloaks.

However, if it was Dumbledore who did it, Sean believed that the old man had a lot of ways to completely cover up that person's existence. It still felt unreasonable to take away the Potter family's invisibility cloak for this purpose.

Moreover, Grindelwald obviously does not know this person...

Thinking of Grindelwald's recent state, Sean always felt that something was wrong.

Grindelwald obviously doesn't know what kind of cooperative relationship Dumbledore has reached with [The Returned], nor does he know Dumbledore's true purpose.

Moreover, he seemed to have a lot of dissatisfaction with Dumbledore... However, Grindelwald was able to remind Sean to find Dumbledore's clues, as if he had already known it.

Sean didn't pay too much attention to it before, because Grindelwald was an elusive person.

However, after today's trip, Sean instinctively felt that something was wrong. Grindelwald's thoughts often appeared...contradictory?

Although he couldn't tell, when Sean thought about it now, he always felt that Grindelwald seemed a little weird in some details...

No... Sean suddenly frowned.

He almost forgot that Grindelwald was a prophet!

Could it be understood that Grindelwald does not know the truth of the whole mystery, but he can see pictures of the future through the prophet, so his actions and words will give Sean a slightly contradictory feeling.

He had seen the future, so even though he was dissatisfied with Dumbledore, he would still find ways to cooperate with his actions.

So back to the core question, why did Dumbledore let himself know that a person was once imprisoned underground in Nurmengard?

In other words, this is just part of the whole mystery, and Dumbledore is restricted by the unbreakable oath, so he can only reveal it to himself bit by bit, allowing himself to understand it together, and finally reveal the truth of the whole thing.

Sean lowered his head and fumbled for a while, and took out a letter and a stone.

This is what Sean sent back to Dumbledore after he received the letter in Godric's Hollow and told it to him.

There may also be secrets hidden in it...

Sean picked up the letter and read it carefully.

Finally he returned his attention to the beginning of the letter.

"Dear Sean:

"I already understand what you said. I didn't reply to you in time because I needed to verify a certain conjecture, and the owl message is not as safe as I thought.

"Based on your description, I can probably guess what happened to poor old Bathilda. It was probably a powerful forgetting spell, and the caster may have designed a switch to awaken memories. I have a few switches about them.

My guess is that the first is time. The effect of the spell is not permanent. Old Bathilda was also an outstanding wizard when she was young. There are not many people who can cast this kind of spell and last for so many years. The second guess

, the switch is you, the person who left the letter hopes you can see all this——"
To be continued...