"After restraining Sirius, find Severus to give him some Veritaserum. On the other side, send a Hogwarts Professor to check the water meter in Gryffindor Tower, capture Peter Pettigrew, and also give him some Veritaserum. Then the truth will be revealed." Kayson said as a matter of course.
"My idea is… to bide our time," Dumbledore said with a smile.
"Hmm?" Kayson and Lupin both looked at Dumbledore. "What new trick are you up to now?"
Dumbledore pulled out a letter from under his desk. "Look at this."
Kayson took the letter, tore open the envelope, and read its contents. The content was easy to understand: Peter Pettigrew had written to the Principal of Durmstrang, asking him to come to Hogwarts to save him.
"...So, all of us, Professors and students, who write letters from Hogwarts, are under your surveillance?"
"Of course not those of you recorded by Hogwarts, but if the detection magic in the owlery encounters an unfamiliar face or an expired face, then a copy of the letter needs to be made," Dumbledore explained.
"The Principal of Durmstrang is Karkaroff… Will he really come?" Lupin asked.
"Hard to say. Peter Pettigrew didn't use any threatening words in this letter. From this, it can be seen that they at least have something Karkaroff hasn't completely severed ties with, but it's clear within the Death Eater ranks." Dumbledore shook his head.
"You want to stand from Merlin's perspective, high above, and try to bring Karkaroff down," Kayson said calmly.
"Next year is the Triwizard Tournament, and the Principal of Durmstrang will be staying on Hogwarts grounds for most of the semester. I think this is very necessary," Dumbledore nodded.
"Wow, you're finally doing something a Principal should do," Kayson exclaimed, though the tone of his praise always gave off a sarcastic feeling.
Dumbledore looked at Kayson with some helplessness. "Even now, I still don't know what kind of image I have in your mind."
"You can guess," Kayson said, then nudged Lupin with his arm. "Do you know that Animagus Reversal Curse?"
Lupin nodded.
"Then it's fine. Let's go back to my office, and while we're at it, call Severus to get some Veritaserum for Sirius."
"Ah?"
Kayson spread his hands. "That's right. Even if our previous deductions were perfectly logical, they were still just deductions and can't be used as evidence. Real life can sometimes be much more absurd than novels."
"If your novel's plot doesn't make sense, readers will complain, but when real life doesn't make sense, we can only accept it. What if the truth is completely different from our deductions?"
Dumbledore fed his Phoenix, Fawkes, while sending him off to deliver a letter to Snape. "Kayson is right. We should always maintain the most basic humility."
Soon, Snape knocked on the Headmaster's office door. Without waiting for Dumbledore to speak, he walked in on his own, completely ignoring Lupin. He looked at Kayson and Dumbledore. "Is there something you need?"
"We've found traces of Sirius."
"Where?" Snape, who had been a cold uncle just a second ago, now had his wand out and asked menacingly.
"In my office," Kayson raised his hand, a little embarrassed.
Snape nodded, then instantly cast a flying spell, turning into a black smoke and flying out the window. Kayson and Dumbledore, seeing this, thought, "How can this be?" They immediately used their own methods to return to the alchemy office.
Only Lupin was left in the Headmaster's office. He could only look helplessly at Fawkes on the perch.
Fawkes shrugged helplessly and flapped his wings at Lupin.
"Thank you so much, you're the most beautiful Phoenix I've ever seen."
Soon, Snape directly squeezed in through the ventilation window in the corner of the alchemy office. He saw everyone in a small forest within the office and immediately flew towards them.
And then…
"Kayson… why are your trees square?" Snape asked.
".....It's convenient for making planks," Kayson replied dryly.
"Oh… Where's Sirius?" Snape nodded and continued to ask.
Kayson pointed to Sirius, who was still sleeping like a dead dog. He looked at Lupin, and Lupin looked at him.
Finally, Dumbledore broke the silence. "Alright, Kayson knows nothing about spells." As he spoke, he hit the large black dog on the ground with an Animagus Reversal Curse.
The next moment, Snape saw his long-sought enemy, Sirius. But Snape was still very rational; he just instantly pointed his wand at him and cast a Reviving Charm.
Sirius slowly woke up. In a daze, he saw Snape and instinctively barked, making Snape show a strange smile.
"Have you forgotten human language?"
Hearing Snape's sarcasm, Sirius's expression froze for a moment. Then he lowered his head and saw his old clothes and his human hands.
He then looked at the others surrounding him: Lupin, Dumbledore, Kayson. "My Merlin…"
"Sirius, we have some very important questions to ask you," Dumbledore coughed lightly and said.
Sirius merely let out a sigh of relief. "Perfect, I can take this opportunity to tell you everything. What do you want to ask?"
"I'm sorry, Mr. Azkaban Prisoner, you cannot freely use your tongue and thoughts right now. Drink this." Snape pulled out a Potion bottle from his pocket and threw it over.
Lupin looked at the full bottle of liquid and quickly turned to Snape, who shrugged. "It's diluted, don't make a fuss."
"Veritaserum? I have nothing to hide from you," Sirius instinctively gave Snape a mocking look, then pulled off the Potion bottle cap and drank the Potion in one gulp.
The next moment, he almost instantly fell uncontrollably onto the grass, clutching his chest and convulsing uncontrollably.
"Oh dear… I'm so sorry, I accidentally picked up the wrong one. But this is also your fault, Sirius Black, you… didn't… say… anything… when… it… didn't… taste… right?" Snape bent down slightly, as if enjoying Sirius's miserable state at that moment, especially the latter half of his sentence, which he spoke incredibly slowly, as if trying to prolong Sirius's suffering.
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