"Yup! They feed on happiness." Andy answered himself.
Moreover, the Patronus Charm was the nemesis of the Dementors!
Andy suddenly realised that the dark wizard who had created the Dementors might have also studied the Obscurus and the Patronus Charm, only that his research direction was exactly the opposite of Andy's.
I am not alone in this path!
As a normal person, Andy did not approve of what that dark wizard had done - experimenting with living people.
Granted, Andy was not qualified to accuse him.
But it couldn't be helped, some magic experiments did require some experiments. And what Andy could do was refrain from killing innocents indiscriminately, and instead use those vicious Death Eaters as experiments.
In the case of not being able to recruit volunteers, this was the only way Andy could do it.
Originally, Andy still thought that Sirius Black might have been wrongly accused, but after listening to Kyle and Helen's explanation, Andy immediately realised that Sirius was a downright Death Eater.
Cunning and cruel!
Not even Dumbledore had spoken a word in his defence.
Back to the Dementors.
Andy's knowledge of Dementors was limited, but there was one person who must have known them well.
That would be Sirius Black!
He lived in Azkaban for twelve years and dealt with Dementors every day. Not only that, but from the establishment of Azkaban to the present day, Sirius was also the only prisoner, who escaped from Azkaban.
What a valuable prisoner!
***
Early the next morning, after eating breakfast, Andy used Apparition to go to the forest near Godric's Valley.
Andy intended to build a laboratory here.
In fact, the laboratory already had a prototype, and now all that was missing was a solid prison, and it would be considered completely built.
With Gold Galleon as a helper, this matter was not difficult to do!
After all, it wasn't like he was building some kind of mansion, and Andy could also use magic for assistance.
It took three days before and after to finish this matter, only then did Andy send out the fat cat patronus, letting it keep an eye on 4 Privet Drive, that is, Harry's aunt's house.
Next, Andy only needed to wait patiently for Sirius Black to appear.
Boom-
A flame ignited in Andy's bedroom, and the Phoenix Fawkes flew out of the flame.
It looked at Andy before placing a small bag on Andy's desk.
"Hello, Fawkes."
Andy greeted, then dumped the Resurrection Stone out of the bag, "I've received it. Thanks for the hard work, Fawkes. Want a biscuit?"
Fawkes looked at Andy with contempt.
Being a noble phoenix, it wouldn't eat such stupid food!
Boom!
The flames flared up again and Fawkes disappeared in the flames.
"Kind of interesting!"
Andy stared at the location where Fawkes disappeared.
"If I remember correctly, the last time Dumbledore summoned Fawkes, he asked Fawkes to bring the Sorting Hat, right?"
The Sorting Hat, meanwhile, had been in the Headmaster's office at Hogwarts.
"Can the Phoenix ... use Apparition in Hogwarts Castle?"
Andy analysed, "Is the phoenix's magic too special ... or is it that Hogwarts' warding magic can only defend against a wizard's Apparition?"
"Oh yeah, and house elves!"
Hogwarts kept a lot of house elves, who were responsible for cooking and cleaning the castle - but no one had ever seen them.
'House-elves can also Apparate at Hogwarts!'
Sheesh!
'How great, no one has paid any attention to this.'
Andy pondered.
No longer thinking about it, Andy took the Resurrection Stone in his hand.
'Who to summon?'
To be honest, even if Andy had been a human being for two lifetimes, he didn't have too much of a deep perception of death.
Having died young in his previous life, Andy's loved ones would only send him away for good. In this life Andy was also only thirteen years old, his parents were still young, and his grandfather's generation wasn't considered that old.
The death of a loved one, Andy had never really experienced it.
Andy pondered in his mind for a moment and eventually found out helplessly that the ability of the Resurrection Stone was simply useless to him.
'Is it possible with less familiar people?'
Andy tried Quirrell, only to find that he was unable to summon Quirrell's illusion at all.
'Can it only be someone close?'
Andy played with the Resurrection Stone and was a little helpless for a while.
Even if he got the Resurrection Stone, it was difficult for Andy to test the stone's ability.
'Well ...'
Andy pondered for a moment, 'Resurrection Stone, Death, God ...'
Death Chamber!
'Maybe I can take the Resurrection Stone and go to the Department of Mysteries' Death Chamber to have a look, the power of death should be stored there!' Andy's heart stirred.
If there was another place in the magic world that could make Andy curious, then that place must be the Ministry of Magic's Department of Mysteries.
Not only the Death Chamber, Andy was curious about all the divisions of the Department of Mysteries, including the research materials there.
Andy believed that it would definitely be a valuable treasure!
If it was before, even if Andy wanted to go there, there was nothing he could do - it was too mysterious and heavily guarded.
But it was different now.
As long as Sirius Black was captured, Andy could get a glimpse of the secrets of the Department of Mysteries.
And the cost was low.
A vial of polyjuice potion.
A living Sirius Black.
A new wand.
And, a house elf from the Black family.
Andy could use the polyjuice potion to infiltrate the Ministry of Magic, which would be easier if it was nighttime.
And before that, Andy only needed to use the Imperius Curse to control the Black family's house elf, so that it could use Apparition to take himself away.
'Well ...'
'I can attack an employee of the Ministry of Magic, and then use the time when he's on the night shift to infiltrate the Ministry's Department of Mysteries. After getting the research materials there, I can also stop by the Death Chamber.'
'If there's enough time, the other rooms can't be missed either.'
'If I got spotted, then I'll use another vial of Polyjuice Potion to turn into Sirius Black. By making some noise to attract the attention of the others, I can get the house elf to take me and escape.'
The plan was perfect!
Andy realised that this was a great opportunity, and perhaps his only chance.
After all, Andy had never wanted to work at the Ministry of Magic, much less as an Unspeakable in the Department of Mysteries.
Sirius Black, on the other hand, was a vicious and cunning Death Eater, and the only one of the prisoners, so far, to have escaped from Azkaban.
It's no surprise that someone like that would do such a thing.
As long as this identity was utilised, it would not arouse much suspicion.
And no one would suspect that a young thirteen-year-old wizard would dare to trespass the Ministry of Magic.
There was another point that was also important!
If 'Sirius Black' made a big fuss at the Ministry of Magic, his 'value' would immediately 'double'.
After doing the magic transfiguration experiment, Andy could sell him for a much higher price.
Not only was there no cost, but it was also profitable!
----
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