A/N) Thank you for the reviews. This chapter is a little longer and a few things happen. I hope you enjoy!

If Time-Travel Changed Everything

Chapter Three

Discovery

Sirius rolled to the side as another stunning spell shot over his head. He could not Apparate away as the Death Eaters had put up wards. Damn. He glanced frantically around, while ducking spells, searching for a way out.

His eyes swept round his small flat. He lived on the second floor, and if he remembered well there was a ledge just below his he risk it? He had no choice if he didn't want to be caught.

He dived to the right, barely missing another stunner, and he cast a 'Alohomora' spell at the window. The window was locked and when opened, widened so that a human could fit through.

Peter's voice suddenly broke out over the spells. "Make it easy on yourself Sirius! Surrender and you'll come to no harm!"

Sirius laughed, practically giving the Death Eaters time to surround him. "Yeah, right!" he responded.

He flung to the side, rolling behind the chair, pressing his back up against it. Everything went silent, and Peter's voice rung out once again. "I mean that!"

Ignoring him, Sirius focused his attention on the window, and then taking a deep breath, made a run for it. He turned in time to push his shoulder into the window. He fell through, landing hard on his shoulder on the pavement. Muggles saw him fall and some rushed forward to aid him but he leapt to his feet, even as pain spread through his shoulder. Dislocated.

He began to run. He looked over his shoulder back at the window and saw Peter with Lucius Malfoy glaring at him as he ran down the street. I will get you, Peter, Sirius promised.

As of now, Sirius only had one choice. He had to inform Dumbledore of Peter's treachery and tell James that he was safe. But Dumbledore was the more important one.

Rounding a corner Sirius found himself in dead-end street. No one was around. Taking the chance, Sirius transformed into the big, black dog. He could move faster this way. Bounding North, he made his way to Hogwarts, unaware of the small, fat, gray rat that was still on his trail.

Remus walked through the castle corridors remembering some of the happier memories of his time with his friends. He remembered when James had got down on his hands and knees and asked Lily to go to Hogsmeade with him, but she had slapped him in the face. He could still hear the resulting sound echoing through the halls: James had been so stunned. All of them had seen it coming though. They had all seen James and Lily coming together: it had taken a long time for Lily to accept that James genuinely cared for her, and what her own feelings on the matter were as well.

He rounded a corner and bumped into someone. He fell back apologising automatically, but as his eyes re-focused, his pupils widened in recognition. "Sirius! Mate, what are you doing here?"

"Have to see Dumbledore. It's urgent. What's the password?"

"Toffee Apple." Remus replied. "Padfoot, what happened?"

Sirius exchanged a quick glance with his friend. "It's Peter." his eyes darkened. "He led Death Eater's to where I was staying. He has been betraying us."

Remus was silent, shock to the core. Peter? How could it be Peter? "Are you sure?"

"I don't make mistakes." Sirius said, pushing past Remus to head to the headmaster's office. Then he turned back. "Moony, can you tell James that I'm alright, and warm him about Peter?"

Remus nodded. "Where are they?"

"Oh, you don't know do you?"

"No."

"You'd better come to Dumbledore."

"Why? I thought you were Secret Keeper."

Sirius shook his head. "No, Dumbledore is. I'm the decoy."

He followed his friend, knowing that this was just the answer to some of the many questions that were running through his mind.

Remus sat beside Sirius listening him recount his tale of meeting Peter and then finally escaping and making his way to Hogwarts. Dumbledore listened with interest and when he was finished the old man was silent, thoughtful, which unnerved them both. Finally he spoke, his hands clasped together.

"This is unfortunate and grave news. I did not believe that Peter would betray us."

"You thought it would be me." Remus murmured. "I've been literally cut off from my friends for nearly year."

Sirius grimaced. "Sorry, mate, I was the one with suspicions. I didn't think of Peter. I never thought he would have the guts to turn traitor and work for the dark side. I always saw him as a mouse." his eyes darkened considerably. "Then again he is a rat."

Remus rolled his eyes. He should've known Sirius would get that in the conversation somehow. Dumbledore didn't know about their Animagus forms and now that Peter was exposed as the traitor it might be a good idea to inform him of their achievement in fifth year. Remus cleared his throat. "Sirius, I think it's time we told informed him of what we did in fifth year."

"I was thinking along the same lines," Sirius returned, "You can tell him."

Remus sighed and began the tale from start to finish, finally ending it with their midnight adventures. The headmaster listened in silence, asking no questions until the tale was finished.

"Extraordinary. Even Pettigrew achieved this feat?"

"Yes." Sirius answered. "He was the smallest of us."

"Some things make sense now, especially when I recieved reports of three strange animals running around together in Hogsmeade." his eyes twinkled.

"That was us. We never got caught and Remus never bit anyone." Sirius said.

"Which I am thankful for. without James and Sirius, I would've done so, but working together stopped me from doing anything potentially harmful to people."

"So what can we do to alert the Ministry about Peter?"

Dumbledore sighed. "Inform them what happened. Tell them about him being an Animagus and register yourselves. Peter had probably informed Voldemort of that anyway."

"And James?" Remus questioned.

"You will notify him of what has happened," Dumbledore answered, "he is living at Godric's Hollow, where he always has been."

The two friends nodded. "Right," Remus said, "let's go."

Unbeknownst to the wizards of the office, a small fat gray rat sat perched underneath the table. Having followed Sirius, Peter had been surprised when he'd gone to Hogwarts, but he had also been surprised to learn that he was not the Secret Keeper and that Dumbledore was. Just like the other two he now held the information to James' whereabouts. His master would be pleased, but was it worth it to betray him after all he had done for him?

He would have to make a decision quickly or suffer for his incompetence.

Sirius and Remus stood up and left the Office. Dumbledore got up from his chair and Peter hoped he would leave but the next thing he heard was the words:

"You can come out now, Peter."

TBC

I've got the plot-line sorted out now so updates should be frequent. The next chapter should be up either this Tuesday or Wednesday.

What do you think?