Title: Voldemort's Mistake

Rating: T

Summary: Harry finds out that Snape is his father before the third task of the Triwizard Tournament. Shortly after that he's bitten by Remus, who's visiting. This one event will prove to be Voldemort's mistake. Based on Tia Evans's Werewolf Challenge on Potions and Snitches! Harry/Hermione pairing!

Disclaimer: I don't own any of Rowling's Harry Potter characters and I'm making nothing from this.

Chapter Thirteen

"Wait a minute, are you telling me that Harry is acting like Odin, sacrificing himself," Dumbledore said eight days later.

"That's exactly what I mean," Severus told him.

"But why would he-."

The ground rumbled and Severus, Minerva, and Albus ran out into the back in time to see black smoke coming out of Harry's mouth. It twisted to form the deformed face of Tom Riddle.

"You will never defeat me," it hissed and then it was gone.

"Dear Merlin, that was-."

"The soul fragment," Dumbledore told her.

The bounds came off and Dumbledore went to get Madam Pomfrey. While he was gone Severus saw something that he didn't think that he would ever see. Harry's eyes glowed white and then he changed into a raven and flew towards the house.

"Did Harry just-."

"FOLLOW THAT BIRD," Severus bellowed and they ran after it.

The bird had landed in Severus study due to the fact that Severus had left the door open. The bird looked down at them and then changed back, Harry falling down and gasped for air.

"Get some food and drink," he told Minerva and she ran out. "It's alright, Harry."

"It's gone, dad, the fragment is gone," he said and then he passed out.

Harry spent three weeks at Prince Manor recovering not only from the ordeal that he had put himself through but the change that had happened during the Full Moon. Each day homework appeared and Severus watched as he slowly worked through it. Madam Pomfrey told them that Harry wouldn't be fit to return to classes until after October's transformation. Severus would handle Harry when he was fit to take the punishment. He was given his Wolfbane and slowly taken down to the basement to change.

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"I hope that you aren't going to be too hard on him," Minerva told Severus that night.

"The boy reenacted Odin's sacrifice! That's very dangerous magic."

"I'm going to agree," Minerva said to him, "But he was willing to do even that to get rid of that thing."

Severus knew that Minerva had a point but that didn't mean that he wasn't upset. He had almost lost his son to some ancient form of Norse magic.

"Just think about it," she added.

Great, he grumbled, he'd have to 'just think about it.'

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"But what I want to know is how did Harry know what to do?" Remus asked the next morning when he heard what had happened.

He had been busy most of the month finding out if the Disposal wizards had any clue where Tom might be hiding. They had come up empty.

"The Prince family use to practice a Norse form of magic before Christianity came along. It was mostly the women that practiced it. The book that Harry found was one of the few that survived. It talks about sacrificing yourself to either be rid of something or to gain something."

"So can anyone do this ritual?"

"No, only someone that's related to the Prince family can," Dumbledore explained.

"Interesting," Remus stated.

"Very," Dumbledore stated.

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Harry entered his father's study three days after he was done with this month's transformation. He knew that his father was upset with him for what he had done. But his father had no clue how it felt to have a soul inside of him that was part of a man that had murdered his mum and stepfather.

"Harry, you know that I'm upset with you but I'm not mad at you," he told Harry.

"Your not!"

"Staying mad at someone for this long isn't healthy, but I don't understand why you did it."

"I couldn't stand that thing inside of me," Harry confessed, "I felt polluted and dirty."

"Do you know what happened after the ritual was done," his father asked and Harry shook his head. "You changed into a raven."

Harry stared at him and then he asked, "Why don't you try turning into one."

"I don't know how I did it before."

"Then you'll need Professor McGonagall," his father said to him.

The next day Harry returned to Hogwarts with his father. He spent the night in his father's quarters and then headed up to the Great Hall for breakfast. The first thing that he smelled, besides the food, was Hermione. He sat down next to her and was rewarded with a hug.

"You're a month late!" she stated.

"And I thank you for the homework," he told her and she went pink.

"Did you hear about what happened to Malfoy and his mum?" Ron asked him.

"Yes, and I think that it's bad."

"Are you off your rocker?" he asked, "This is the best-."

Harry growled at him and then asked, "How is being like this the best thing in the world?"

He figured that was the part that he had interrupted.

"We're talking about Malfoy here."

"He was infected by Tom Riddle," Harry told him, "That's not a good thing."

"Ron leave it alone," Hermione begged. "I got attacked by Riddle as well. Do you think what happened to me was a good thing?"

"Of course not."

"Then it wasn't a good thing for Malfoy or his mum," she said.

Her tone told Ron to drop it.

Getting back into the swing of things was hard for Harry. The team hadn't been able to practice due to Harry being out. So Harry wasn't surprised when he found that Ginny Weasley had been made Seeker in his place. Add Prefect duties and Harry had a full plate. The first Saturday since he return he went to see Professor McGonagall.

"Severus told me what happened," she said.

"He asked me to change into a raven and I don't even know how I did it," Harry told her.

"Then we'll train you until you figure it out."

Harry had a feeling that McGonagall was going to be a drill sergeant.