In the Headmaster's office, as Dumbledore slowly revealed the process of the murder of Harry's parents, McGoth's mood became heavier and heavier, and they all looked at Harry with some concern.

"We thought that with the protection of the brave and faithful, we would be foolproof, but." Dumbledore looked at Harry guiltily.

"I'm sorry, Harry, we didn't protect them."

Harry held back his tears and smiled an ugly smile at McGoss's worried eyes.

"So, it was Sirius who killed my parents. Blake, right? ”

"Before last year, I didn't defend him, although I was still a little confused, until I found a wizard."

"Pettigrew Peter?" Hermione asked, somewhat uncertain.

Harry jerked his head up at Dumbledore, waiting for his reaction.

Dumbledore nodded slowly,

"I used a prop to observe Hogwarts after Kang's disappearance last year, and although I couldn't find Kang, I saw this wizard who had been dead for many years."

"Then why don't you arrest him and ask him clearly." Harry shouted as he stood up in emotion.

"Harry." Dumbledore tapped his wand lightly on the tabletop to stabilize Harry's mood.

"One thing you have to be clear about is that after that incident, Peter has become a hero. Regardless of whether this hero is true or not, we can't easily announce this news to the public, and likewise, if it is really him, he will not admit it. ”

"Why, there is a good chance that he is the culprit who killed my parents." Harry's face was full of reluctance.

"Do you think people would want to believe in an Azkaban fugitive who has long been identified as a sinister man, or a wizard who saved lives with his life?"

"But since he has become a hero, isn't it strange that he has been hiding in Tibet for so many years?" McGoth questioned.

Dumbledore shook his head,

"Maybe it's to avoid Voldemort's revenge, maybe it's because you don't want to accept this glory, there are too many reasons."

"Then let's grab it and use the truth potion." Harry suddenly remembered Hermione's previous idea.

"First of all, this must be approved by the Ministry of Magic, and secondly, although the effect of the elixir is very powerful, it is not without resistance, in case Peter says the same thing as recorded while drinking the elixir. If it's true, it's fine, but if it's fake, then Sirius won't be able to clear his name for the rest of his life. ”

Harry clenched his fists, his expression full of avenging pain. He didn't expect things to get so complicated, he thought that he would find out the real culprit who killed his parents just by taking them to confront him, and now it seems that even if they did meet, he couldn't be sure who the real traitor was.

"Headmaster Dumbledore, can you tell us where Pettigrew-Peter is hiding right now? We haven't been able to find him. Ron asked weakly.

Ron's words put Harry's eyes back on Dumbledore, who still didn't know where Peter was hiding.

Dumbledore gave Ron a deep look.

"There are many rats at Hogwarts, but there is only one that does not arouse the suspicion of any wizard."

Ron was a little hairy when Dumbledore looked at him.

"What do you mean?"

"After that explosion, the Ministry of Magic only found one of Peter's fingers, so they thought he was dead after that explosion."

Hermione looked at Ron in surprise,

"I remember that Spotted was missing a finger as well."

"It can't be, it can't be Spotted." Ron's pale pleading.

"It's normal for a mouse to have one finger less, isn't it?"

"Ron, I know it's hard for you to accept, but I can tell you for sure that Spotted is Peter in the form of Animagus, and I've spent a year rechecking it." Dumbledore said earnestly.

Ron stared blankly at Dumbledore, unable to believe that his cowardly and ugly pet could be the real murderer of Harry's parents.

"Harry." He looked at Harry, the corners of his mouth opening open and he couldn't speak.

Harry hated that he hadn't found out that Spotted was Peter sooner, but he couldn't have taken his anger out on his friend over it.

"It's none of your business, Ron, none of us thought that Spotted was Peter." While Harry would love to go back to his dorm and arrest Spotted now, he wasn't going to take his anger out on Ron.

"Maybe we can bring Sirius and Peter together without knowing we're concerned." Magos was relieved to see that Harry was not overwhelmed by hatred, and hurriedly said his advice.

Dumbledore's eyes moved slightly,

"Judging by their grades in school, there's a good chance that Peter won't be a match for Sirius."

"So if Peter didn't know that he was under surveillance, and faced with Sirius, who was eager to crush him, there was a good chance that he would tell the truth about the day."

"If Peter really wasn't the murderer, wouldn't he be dangerous." Hermione spoke.

McGoth looked at Dumbledore.

"I don't think that's a problem."

The truth about the murder of Harry's parents was quickly decided by Dumbledore after Magos's suggestion was agreed to by Dumbledore, and they soon began to work out how Sirius and Peter could meet by chance without them noticing.

"Bring Spotted to Hogsmeade?" Hermione suggested.

"Nope." Dumbledore shook his head,

"One, we can't be sure if they'll meet them. Second, if they attack each other, there is a high chance that the inhabitants of Hogsmeade will be harmed. Thirdly, since Sirius has told you this, if you bring a mouse with you, it is very likely that he will know your purpose and will never admit that he is a traitor. ”

"Then let's let go of Hogwarts and let Sirius come and look for Spotted on his own?"

Dumbledore outright denied it.

"I don't test the lives of students in the school to their good or evil."

It's easy to say, but it's much more complicated to do, and they couldn't come up with a perfect answer after discussing it for a while.

"Crook Hill." Ron, who had been silent all this time, suddenly spoke.

"Spotted is afraid of Crookshan, let Crookshank go after him and chase him out of the school, you can have Sirius look for clues near the school two days in advance. If they can come across it, it won't raise suspicion yet. ”

McGoth's eyes lit up, what a good idea, so that they would think it was just a coincidence.

"Good idea, Ron."

Ron smiled bitterly,

"I just hope Headmaster Dumbledore is mistaken, if Sirius didn't attack Spotted, doesn't that mean it's not Pettigrew-Peter."

Looking at Ron's sad appearance, McGoth shook his head and sighed in his heart, but unfortunately Spotted was Peter, Pettigrew, and Dumbledore was not mistaken.

They couldn't comfort Ron when he was uncomfortable, especially Harry, who felt a little sorry for Ron, but he wouldn't give up on it, and he believed that Dumbledore wouldn't be mistaken.