We've all read stories where Harry ends up in a parallel world, and finds himself with a new sister. What if the sister suddenly appeared in our world? Post-OOTP, ignores Horcruxes.

Harry Potter and the characters and scenes you recognize all belong to JK Rowling. No copyright infringement is intended.

It's been quite some time since I've last posted anything here, or anywhere else for that matter. But this idea has been rattling around for too long, and I can't ignore it any more. I won't hold future updates hostage to a certain number of reviews, but I wouldn't mind hearing what you think.

The Other Potter Sister

Chapter One: Appearances

Tonks kept a close eye on her surroundings while Kingsley walked beside her. They had been assigned by Dumbledore to discreetly follow a wizard and find out where his meeting point was when the Death Eaters called him.

They had started, of course, by tagging their target with a tracking charm. This allowed Kingsley to instantly find their target by simply thinking about him and apparating. The spell would place him within one hundred feet of their target.

A few minutes ago, the target had unexpectedly visited an outdoor market. Kingsley and Tonks arrived less than a minute later, having disillusioned themselves, and were watching as he wandered among the stalls. He seemed to be picking up something for his supper. There was nothing so strange about that, but Tonks wondered why he would come here, a Muggle farmer's market in the middle of Exeter. He had plenty of muggle money, and was using it skillfully to pay for his items.

This was certainly strange behaviour for a death eater. Kingsley and Tonks were starting to wonder if they hadn't tagged the wrong bloke.

His bag was nearly full. He had picked up a loaf of bread, a fresh chicken, potatoes, vegetables, and a half pound of cheese. He had just picked up a bottle of apple cider and was heading for the exit.

'He's leaving,' whispered Kingsley. 'Let's follow him.'

'Are you certain this is the right man?' asked Tonks. 'From the way he was chatting up the shopkeepers, it's obvious he's a regular here.'

'Dumbledore was sure,' replied Kingsley, shrugging his shoulders. 'He brought me to the man's house and pointed him out to me.'

A woman had run toward the man while they were talking. They had heard her say that she'd made up the basket of fruit for him and it had all his favorites. The target had thanked her with a kiss on the cheek, and then waved to a man across the way, obviously the woman's husband. The husband had seen the little kiss, but it didn't stop him from waving back with a jovial smile.

'He really doesn't seem like a death eater,' Tonks said.

'Maybe it's just a cover,' provided Kingsley.

'Pretty damn good cover, then. He should be teaching a course at the Auror Academy.'

Kingsley chuckled, agreeing with her. 'This is the way to his house.'

By this point they were outside, walking along a busy street. They were having a hard time not bumping into people. It was a Saturday morning and the pavement was filled with people milling about trying to get their shopping done early.

The target was nearly home when they heard a loud clap of thunder. The sky filled with dark clouds, the winds began to blow, and the rain drenched everything in sight. The townspeople all scattered inside, trying to keep themselves dry. In minutes, the street was empty. The man had started running to get back to his house quickly.

And then something happened which removed any doubt that the target was up to no good.

There was another large clap of thunder. In the next instant, the man dropped his bag of food and pulled out his wand. There was someone standing in front of him, a girl, and she wasn't happy to see him.

'Stay right where you are!' the girl shouted. She was so forceful that Tonks and Kingsley couldn't help but stand still for a moment, even though the command was not directed at them.

After a moment, they were able to move, but their target was frozen solid. Tonks and Kingsley tried to get closer to the two, but they didn't get far. The rain had stopped as suddenly as it had started, and their footsteps were much harder to conceal.

'What do you want from me?' asked the target.

'Don't play stupid,' she said. 'I know you were involved. You and your gang of masked shitheads kidnapped my little brother. We found his body, completely drained of blood.'

'I don't know what you're talking about,' the man said automatically.

'You are Anton Fredricks. You're an evil man and I'm going to kill you,' she promised. 'I'm going to kill you and leave your body where no one will ever find it. And then I'm going to find the rest of your band of thugs and dispose of them the same way.'

The man laughed at her. 'You really think you can take us down, little girl? You can't be much more than sixteen years old. You wouldn't have the nerve...'

'Shut up!' she commanded, and the man was stopped in the middle of his rant. 'I don't remember asking for you to review my plan. But just to let you know, I've already taken care of one of them. You know that short bloke with the brown hair and the scar on his left cheek?'

'Jarvis?' asked the man.

'I don't know what his name was. You know, he didn't stutter a single word while he was begging for his life.'

'I don't believe you.'

'It's true,' said the girl. 'Everything came out clear as a bell. Now drop it, and get down on your knees.'

The man's knuckles turned white as he gripped his wand, and his legs shook. He was trying to defy her order. 'Why should I believe Jarvis is dead?'

'Did you know he has a tattoo of a pumpkin on his left shoulder?' The man gasped as she told him this. It was quite plain he had known this. 'There must be quite a story about how he got it. Care to share?'

The man lost his battle against her will. He suddenly hurled himself forward on his knees and threw his wand at her feet. The girl moved quickly and was soon standing directly in front of him. Tonks saw that she had removed one of those muggle hand weapons from her pocket, and now held it in her hand, pointed at the man's head.

'What is that?' the man asked. 'Do you plan to beat me over the head with that little trinket?'

'Are you really going to let on that you don't know what this is?' she asked. 'You know what bullets can do to skulls. I know that you know.'

The man nodded, suddenly dropping his charade. 'Don't do this,' he said. 'I've a wife and two small daughters.'

The girl's face took on a look of satisfation. 'That's the first truthful thing you've said since we met,' she stated. And, just so you know, I used to have a younger brother, and my parents used to have a son.'

'We didn't have a choice,' said the man. 'None of us ever have a choice when he tells us to do something.'

'Perhaps you should have thought of your family before you started following that psychopath. Trust me, they'll probably be better of without you.'

'I could help stop him,' said the man. 'I could go to the ministry and turn myself over. You don't want to do this.'

'You're right,' said the girl, sadness in her voice. 'I don't want to be doing this. But I also didn't want to go to a funeral for my fourteen-year-old brother. And you aren't talking your way out of this.'

She cocked back the hammer on the pistol and placed the muzzle against his forehead. The man closed his eyes, waiting for the blow. It was right then that the girl was distracted by a sound to her right. The sound was unexpected because she was certain they were alone in that street.

Her distraction was enough for the Fredricks to take control. He reached up and grabbed the weapon from the girl's hand, knocking her to the ground in the process. There was a simultanious flash and a bang from the muzzle, and girl was suddenly bleeding from a gaping wound in her side.

Kingsley launched into action, stunning and binding the man, and taking the pistol from him. Tonks ran toward the girl, who was moaning loudly and clutching at the wound with both her hands.

'You're going to be alright,' said Tonks. 'Just hang on so we can get you some help.'

'Where did you both come from?' gasped the girl. 'You distracted me when you tripped. I couldn't see you, but I heard it. You tripped over the hydrant.'

'He's not getting away,' said Kingsley. 'What's your name?'

'Chri-Christina,' she gasped. 'This really hurts.'

Tonks took the wool scarf she'd been wearing and pressed it into her side. Within seconds it was soaked and the blood started oozing from between Tonks' fingers.

'Hang in there, Christina,' Tonks said. 'Help's on the way.' Kingsley had turned away a moment earlier and sent a patronus to Madam Pomfrey and Professor Dumbledore.

Christina's head lolled to one side. She had passed out, from the pain or from the loss of blood, Tonks wasn't sure, but she was still alive.

Madam Pomfrey popped into existance beside her and took over. She wasn't alone. She had brought Professor Sprout and a few others that Tonks recognized from the order meetings. They formed a perimeter around the hurt girl.

'What's happened here?' asked the matron.

'She was shot with one of those muggle hand weapons. It put a hole in her side,' explained Kingsley.

'She passed out just a few seconds before you got here,' said Tonks.

Madam Pomfrey waved her wand over the wound and a spot of blue appeared on the girl's blouse. The spot started moving slowly toward the wound, and a moment passed before a small piece of metal popped out onto the pavement.

'That's better,' said the matron. 'Who is she?'

'Her name's Christina,' said Tonks.

'How about a surname?' Pomfrey asked as she pressed a bandage against the wound.

'We never got that far,' said Tonks. 'She passed out before I could ask.'

Madam Pomfrey looked back toward her. 'Is she a witch?'

'I didn't see her use any magic,' said Kingsley. 'She's the one who brought the pistol. She was going to kill Fredricks.'

'Hrmph! Why'd you stop her?' asked Moody. He had just arrived and was surveying the area with that creepy eye of his. 'There's no one around,' he announced.

'I've patched her up as much as I can here,' said Pomfrey. 'Let's have out that flying carpet and get her out of here.'

'No,' said Moody. 'We can't bring her to Headquarters. She's either a security risk, or she's a Muggle.'

'I'm not leaving her here,' said Pomfrey, getting to her feet. 'I am going to take her somewhere I can treat her, even if I have to levitate her through the middle of the high street! Now, you can either help me with her, or you can clean up the extremely large mess I'm about to make!'

'Would you both please calm down?' asked Kingsley. 'How about a compromise? The Weasley's property is less than twenty miles from here. It's secure, it's out of the way, and we could get here there without much effort.'

'That sounds fine,' said Pomfrey.

Moody considered for a moment before giving his decision. 'Is Potter there?'

'No,' replied Tonks. 'He's due to arrive tomorrow.'

'Alright,' he said. 'Get her on the carpet and into the air. Two of us on brooms will lead the way, and four of us behind.' He pointed at Pomfrey. 'You need to keep her asleep until we know more about her.'

'She's not waking up any time soon, I guarantee it,' she said.

It didn't take long before they were assembled, concealed and in the air. Fredricks had been portkeyed to Azkaban, and the blood had been cleaned from the road. Soon, all that was left behind was a spilled bag of groceries.