This is the unbetead version of this chapter, so apologize for any errors. I did my best to get rid of them, but I'm only human so there's bound to be some I missed. Anyway, hope you enjoy. The last few chapters will be posted by next week.

Crookshanks pounced through the door with Sirius on his heels, while Jack and the others stared blankly waiting for Sirius to transform and tell them what they'd found out.

"He's there. Unfortunately Hagrid is so depressed about that hippogriff of his that's set to be executed he's hardly left his hut for anything. We may have to wait another day or so to get to Peter."

Jack shook his head and ran his fingers over his chin as if in thought. "Do you think he'll give Ron back his pet before the execution?"

"I doubt it. He's too preoccupied with that hippogriff."

"Alright. Then we wait until the day of the execution. Hagrid we'll never know we were there." Sirius nodded to Jack and reached down to pick up Crookshanks who was rubbing against the Colonel's leg yet again.

"He really is taken with you, sir." Carter and Daniel chuckled softly as Jack turned his annoyed gaze on them as he dumped the cat on Sirius lap.

"Laugh it up you two. Just keep laughing. I'll get you both when we're back home."

"It does seem strange that this feline enjoys your company to such a degree, O'Neill."

Jack rolled his eyes at his jaffa friend and sank down into the chair by the wall. "You two? I'm surrounded by traitors."

They all laughed as Crookshanks jumped from Sirius' arms and ran to Jack's lap. As he did so the Colonel groaned in defeat as he ran his fingers over his stomach and then down his back.

"Alright. I give up. I don't know what it is you like about me, but I guess it ain't so bad."

Another day came and went as Jack and the others prepared to go after Peter. With the help of Crookshanks they were certain that Hagrid would be so busy with Buckbeak that he'd never notice them sneak into the hut and take the little rat from his cage.

Finally the morning came and as Jack sat up from the thin sleeping bag he was in, he caught a glimpse of the sun as the rose in the morning sky. There were glorious shades of pink and blue caressing the sky as the night said goodbye to the day. Pulling out of the sleeping bag he stood up and drank in the morning air.

Sirius' voice made him turn and he smiled at the wizard. "It's going to work, Jack."

"I hope you're right. I just have a strange feeling. It's not a bad feeling, but whatever happens today is gonna change things. I don't know how, but it will."

"I don't doubt that, my friend. I only hope that it changes things in our favor."

"If what I said in the forest is true, then even if it is in our favor, bad things are still gonna happen."

"Maybe so, but if we keep Harry safe than that's what matters."

Jack sighed and placed a hand on Sirius' shoulder. The other wizard smiled and they watched silently as the last remnants of the night faded into sunlight.

Teal'c walked into the room, having just finished his kelnoreem, and Carter followed shortly after with a bleary-eyed Daniel behind her. The uncaffeinated linguist was quite a sight in the morning as he ran a hand through his unkempt hair and yawned.

"I know you want this so here." Jack chuckled as he handed Daniel a steaming mug, and the archeologist's eyes lit up as the aroma hit him.

"You're a god."

"No I'm just a colonel, but thanks for the compliment." Daniel growled as he breathed in the aroma of his coffee and brought the warm brew to his lips, drinking heartily.

Jack turned his gaze to the other half of SG-1. "Well campers. Looks like today's the day. You two ready?"

"Yes sir." "I am ready O'Neill."

Both nodded as they spoke and Jack smiled in response.

"Well, then let's go over the plan one more time." Quietly, they all took their seats beside the Colonel as he went over the details of the plan one again.

------

Several hours passed before it was time to put their plan into action. Jack and Sirius had gone out to do some last minute reconnaissance leaving Daniel and the others alone in the shack.

"Am I the only one that has a weird feeling about all this?" Daniel anxiously toyed with the zipper on his jacket as he peered out one of the cracks in the slats covering the windows.

Teal'c nodded and cocked his head in Daniel's direction. "You are not. I too feel a strangeness surrounding the events of late."

"I have to agree. There is something off about this whole thing. Ever since the Colonel collapsed in the forest the other day, it hasn't felt quite right." Carter agreed with her teammates as she checked the supplies in her pack once more.

"That was pretty strange. The way he went all rigid and started mumbling like he did, it was creepy."

With a nod Carter moved closer to where Daniel and Teal'c were seated. "I know what you mean, Daniel. I was scared there for a minute."

"I just hope Jack knows what he's doing." Daniel sighed as he looked back and forth between his teammates.

"I believe O'Neill knows exactly what he is doing." Teal'c's voice sounded reassuring, but it was only a slight comfort to them.

------

The moon was shining brightly as Jack and Sirius crept towards Hagrid's hut. As they drew nearer, Jack motioned for Sirius to go around the other side of the hut and the two split. Jack stealthily moved through the trees until he had a clear view of the backdoor of the hut. From his vantage point he could see Hagrid inside, and it was obvious he was speaking to someone or a group of someones. Then as he moved a bit closer he caught sight of two figures waiting just outside the pumpkin patch beside the house. They looked strangely familiar.

Curiously he edged his way as close as he could and bit back a curse when he recognized the two people near the hut. He had no idea what Harry and his friend were up to, and his mind was already jumping to a number of conclusions, none of which were making him feel any more comfortable with the situation. Quietly he started to move towards them, but stopped in his tracks when he saw the backdoor to Hagrid's hut open. He watched in confusion as Harry and his friends exited the hut and then watched as the other 'Harry' and his friend moved away from the garden.

'I must be losin it.' He thought to himself. Slowly he blinked and rubbed at his eyes, and still both versions of Harry and his friend could still be seen. He swallowed the lump in his throat and stepped behind a tree so as not to be seen.

Luckily he was close enough to hear what the 'Harry' and his friends that had just left Hagrid's was saying and he cursed again to himself, hearing that they now had Peter. His first thought was to follow them, but he turned to see the other Harry attempting to free the large hippogriff that was chained in the pumpkin patch. With his eyes away from the other group of children, they ran off and were too far away for him to see them when he'd finally turned around.

"We've got to go after them, Jack." Sirius voice caught his attention and he looked to his right to see an untransformed Sirius Black waving for him to follow.

In a flash Sirius transformed and was hot on the trail of the three children and Jack was just behind him, his mind still reeling over whether or not he had actually seen two very different, yet very similar Harry Potter's just moments before.

A shout from one of the children brought Jack from his thoughts and he looked up from his spot in the trees to see Sirius diving over Harry and Hermione to get to the Weasley boy who was clutching at his pet rat. He opened his mouth to stop Sirius, but no words left him. Dumbfounded he watched as Sirius dragged the boy off, and from the corner of his eye he caught sight of Crookshanks running to catch up with Sirius.

"Damn it!" Jack spat onto the ground and reached for the radio strapped to his right shoulder. "Daniel, Carter, do you read me?"

"We read you, Jack. What's going on?" Daniel answered and Jack gave his team the quick version of what was going on.

"Sirius is headed back towards you three. I want you to get outta there. Stay hidden. I'm right behind them, and I'll radio when it's safe. Over."

"Understood, sir. Over and out." Carter was the first to respond and Jack slipped the radio back on his shoulder as he made his way back towards the Shrieking Shack.

Jack reached the shack several minutes later and he could already hear the voices shouting inside. There was a rustling in the bushes near him and he turned quickly, wand in hand.

"I thought I told you three to find someplace safe?" His words were a whisper, but the frustration was clear as the rest of SG-1 came into view.

"We tried. We didn't want to be too far away in case you needed us, Jack." Daniel stood with arms crossed over his chest and Jack sighed.

"Fine. I'm going inside. You three stay put. Maintain radio silence for now." He started into the building and quickly turned around again. "And don't come inside, no matter what you hear."

The other three nodded and Jack slipped in the side door, and made his way carefully and quietly up the steps. As he reached the room where the children were he could hear Sirius shouting madly and Harry shouting back. There was someone standing just in the doorway and the stranger pounced inside before Jack had a chance to stop him.

A hand on Jack's shoulder caused him to jerk his head around in response and he nearly hit the floor when he saw a head and arm dangling in front him, seemingly attaching to thin air.

"Sev! What are you doing here?" Jack whispered as softly as he could while more shouting erupted from inside the room.

Severus Snape removed the invisibility cloak from his shoulders and shook his head. "I could ask the same of you. You're not even supposed to be in this country."

"I came to help Sirius."

"That figures. You and your friends." The other wizard was clearly upset as he slipped the cloak back on and entered the room where all the shouting was coming from.

Jack cursed silently as he listened from the doorway as Remus Lupin and Sirius Black tried to explain their story to Harry and his friends. Severus had waited until the perfect moment to make himself known and Jack waited until he heard Severus threaten Sirius and he pushed himself through the door.

"Stop this, Sev! You're making a mistake!" Jack's voice echoed through the room and everyone turned I his direction as he pointed his wand directly at his brother, who in turn did the same.

"Don't think you can stop me, Jack! This isn't about you! He deserves to pay for what he did! How can you defend him!?"

"I defend him because I know the truth! The truth you refuse to listen to!" Jack kept his wand on Severus and turned to the others. He motioned for Sirius to pick up Remus' wand and the wizard did so quickly and freed his friend from the magical bonds Severus had used to confine him.

"Jack what are you doing here? You've been helping him all this time?" Remus stood and moved closer resting a hand on Jack's shoulder.

"I had to Remus. We had to make it right. Catching Peter was the only way to make everyone believe."

"Would someone please explain what's going on? And who the bloody hell is he?" The anger on Harry's face clear and Jack sighed as he looked from Sirius and Remus and then to Severus.

"You've got a right to know the whole truth, Harry." Jack turned to Severus and lowered his wand. "Let us tell him and you the truth and then you can decide whether or not Sirius is taken to the dementors."

Severus reluctantly lowered his wand. "Fine. Say whatever it is you think you must."

Jack placed his wand in his pocket and motioned for everyone to take a seat. With a sigh he looked first at Harry and then at Sirius.

"To answer your question, my name is Jack Corrigan. I went to school with these three." Jack pointed to Sirius, and Remus and then to Severus.

"So you knew my parents?"

Jack looked away for a moment and then took a deep breath before speaking. "You could say that…Lily was my sister."

"You're lying!" Harry, Ron and Hermione shouted at the same time and Jack brought his arms up to calm them.

"You can't be serious?" Remus glared wide-eyed at his friend. Shaking his head in disbelief.

"I'm telling the truth. I can prove it."

"How?" Harry spoke up, though his face was still flushed with anger and confusion.

Jack motioned for Severus to come closer and reluctantly the wizard complied. He also motioned for Harry to come closer and the boy did so almost as reluctantly as Snape had. They all three put their wands together and Jack and Severus began to chant the words to what was obviously some sort of spell.

"Of course it's the Familias charm. It will show exactly how any witch or wizards are related." Hermione nearly shouted as she moved closer to get a look at the spell. "What does Professor Snape have to be a part of it though?"

Her question went unanswered as a puff of smoke rose up between Harry and Jack showing the image of Jack and Lily next to each other, under the image of a woman that Harry didn't recognize, but who looked very much like his mother. Above the unknown woman's head was the word mother. Harry gasped in disbelief and was barely catching his breath when another puff of smoke rose up between Jack and Severus. The smoke cloud revealed another image of Jack, but this one had the image of Severus next to it and above them was the image of dark-haired man that had the words father above his head.

"You're my uncle?" Harry's voice was thick with emotion as he looked at Jack and then at Snape. "I don't understand."

"Lily and I had the same mother and Severus and I had the same father. When I came to Hogwart's we I was put in Slytherin, and Lily was put in Gryffindor house. Since we didn't share the same last name, no one even guessed we were related. We decided no to tell anyone. I think the only one Lily ever told was your father, but that wasn't until after we'd all left school."

"Why didn't you bother telling us?" Remus asked.

"Yeah, why not? We were your friends." Sirius was almost seething as he looked at Jack and Severus.

"You mean the mutt didn't know?" Snape practically snarled as he turned his glare to Sirius, and Sirius was on his feet ready to lunge and Snape in response.

"I've had about all I can take of you two." Jack stood and raised his wand and aimed it at both men. Silvery cords leapt from his wand and bound both wizards hands and feet before they had a chance to respond. They fell in a heap together and fumbled to reach a sitting position as the children began to laugh.

"All this time, we never knew." Remus lowered his head solemnly.

"Severus and I were death eaters. We couldn't risk anyone using Lily against us. It was bad enough that…Voldemort was after her and James in the first place. Had he known she was my sister…" Jack's voice trailed off as the thoughts of what might have happened, and what did happen flooded his mind.

"You were one of Voldemort's followers?" Hermione stepped forward, her posture demanding a response.

"Yes, I was. I did it to help someone I cared about. In the end, Lily still died and Sirius and I have been running ever since." Jack cast a somber glance in Severus' direction that the young witch couldn't help but notice.

"So what does all this have to do with Scabbers? How is it you all think he's this Peter Pettigrew?" Ron piped up from his spot just behind Harry, where he was still nursing his wounded leg.

It was Remus who answered. "Because we've seen him transform too many times not to recognize him."

Jack stood and stepped closer to Ron and reached and hand out towards him and the frantic creature in his hands, while Harry cautiously watched on. "May I?"

Ron nervously handed Scabbers to Jack and he unceremoniously dropped the creature and let him scurry a few feet before he and Remus trained the wands on him and a flash of blue light left their wands and connected with the rat, transforming into his human form.

"Move any further and you'll wish I'd killed you, Peter." Jack's voice was firm and the tone was grave.

Peter stayed still as Remus moved closer and used his wand to bind Peter the way Jack had bound Sirius and Severus, except he left this mouth unbound. He moved Peter to where Sirius and Severus were still seated and sat him down between them. The balding, rat-like man squirmed as Sirius angrily fought his bonds to get at him, while Severus glared into his beady eyes.

"I think Sirius has something he'd like to tell you." Jack pointed his wand at Sirius mouth and the binding there came undone.

"You bastard! How could you betray us all like that!"

"I…I was only protecting myself. The dark lord has great powers." Peter turned to Jack. "You know what I speak of."

"Don't talk to me about Voldemort!" Peter cringed at Jack's mention of the wizard's name. "You fear him don't you? You fear your Master?"

"He-he is powerful. I had no choice."

"Liar! You always had a choice. James would have died before surrendering to HIM!" Sirius screamed and fumbled with his bindings, futilely trying to reach Peter.

"If you hadn't chosen me as a secret keeper they might still be alive!" Peter snarled defiantly and Jack stepped up and let his fist connect with Peter's jaw.

"You sniveling little rat! How dare you blame Sirius for what you did?!"

"No! He's right." Sirius lowered his head. "If I hadn't convinced James to switch they might still be alive."

"Enough!" Harry shouted and all heads turned in his direction.

"Please Harry Potter! I never meant to hurt you parents! James and Lily were my friends." Jack brought his hand back to hit Peter again, but Remus beat him to it.

"How dare you speak to him?! How dare you speak to Harry after what you did?!"

"Professor Lupin leave him be." Remus turned to look at Harry and then let go of Peter.

"You told Voldemort where my parents were?" Harry looked straight at Peter and the older wizard nodded weakly. "You knew he wanted them dead and you led him to them?!"

This time Peter didn't respond and Harry raised his wand, first to Peter and then he aimed it towards the window and let a curse shatter the window to pieces as he screamed in anger.

tbc...