Protection: A Sabrina the Teenage Witch and Harry Potter crossover

Timeline: book three

Author's Note: I looked all over and could not find mention of Gwen's last name, so I made one up. Hope everyone's okay with Gabriel… Gwen Gabriel.

Chapter 1:

Sabrina glanced around the school grounds, looking for her friend Gwen. Finally she spotted the brunette waving excitedly from in front of a group of students wearing black cloaks. Sabrina made her way across the courtyard and greeted Gwen warmly. She had not seen Gwen since they met up in Australia and was eager to visit with her again.

"Hi Sabrina," Gwen greeted her enthusiastically.. Sabrina noticed a blond boy look up from the book he was showing to two troll like boys standing next to him. She hugged Gwen and heard the blond boy whisper Mudblood. She frowned and watched as another trio- two boys and a girl with very wavy hair walk past. They had also heard the blond boy and they had turned around- the girl clutching the back of the boys' robes. The red haired boy had pulled out a wooden stick- his wand Sabrina guessed- having never used her own wand. She heard the girl whispering, "Harry, Ron, No!"

Nevertheless, Ron took a step forward, still pointing his wand, saying, "Watch your mouth, Malfoy." He walked away, and Sabrina could see the blond boy- Malfoy she surmised, pull out his wand and point it at the departing trio. He was quickly nudged by his two troll-like friends who pointed to a tall, thin, and stern looking woman approaching them and coming to a stop in front of Gwen and Sabrina. Gwen looked up and said, "Hullo, Aunt Minerva," for Gwen's mother was sister to Minerva McGonagall- Deputy Headmistress of Hogwarts. She nodded once to both young women and said, "Follow me." She led them up the stairs and stopped in front of a gargoyle, and said, "Pepper Imps," the gargoyle seemed to hop aside as the wall split in two, revealing a spiral staircase that was moving upward- almost like an escalator, thought Sabrina. As they followed Professor McGonagall, the wall slid shut behind them. Upward, they spiraled up, until they came to stop in front of a freshly polished oak door with a brass knocker in the shape of a griffin. Professor McGonagall knocked once, and door opened silently. She led them into a large and circular office and motioned for them to sit down. Sabrina looked around, seeing the portraits of women and men moving in and out of each other. "Those are Hogwarts' former headmasters and headmistresses. Their jobs are to advise and help the current Headmaster," Professor McGonagall announced, noticing Sabrina's interest, "Professor Dumbledore will be here in a few minutes." She turned and left the room.

"What a beautiful room!" Gwen said to Sabrina, taking stock of their surroundings, "don't you think?" Wordlessly, Sabrina nodded having just noticed the worn out hat on a shelf.

"That's the Sorting Hat," Gwen explained, having seen where Sabrina was looking, "It chooses which students go into which house. There's Gryffindor, Hufflepuff, Ravenclaw, and Slytherin. Each house was named after the four founding witches and wizards of Hogwarts."

"Which house were you in?" Sabrina asked.

"Oh, none, I didn't go here. I was home schooled." Gwen said cheerfully.

"Hello Miss Spellman, Miss Gabriel," the door had opened silently and when they heard this voice they both started, Sabrina turned around while Gwen craned her neck to see the newcomer. It was tall man with a long silver beard, and long silver hair. His robe was deep blue, with a slight shimmer, and his hat a deeper blue. His half moon glasses were perched on his nose, and Sabrina detected a slight twinkle in his bright blue eyes.

"As you may have already assumed, I am Professor Dumbledore." He walked around the desk and sat down. He pulled a file out of a stack of files, and took out two sheets of paper, looked at them and said, "Everything in your paperwork is in order. Miss Spellman, you're assigned to Professor Snape in Potions, and Professor McGonagall in Transfiguration. Miss Gabriel will be working with Professor Flitwick in Charms, and with Professor Lupin in Defense against the Dark Arts. You'll each escort a group of students into Hogsmeade and back for one weekend every month. You'll be using Gryffindor dormitories. I should tell you that the Dark forest is Forbidden for students. But you're welcome to go exploring, just be careful." He shuffled the papers once more, glancing up. "Oh the opening feast is beginning. Come." He led them through the other door and down a passageway. They entered a huge room from behind the staff table which spanned the width of the Great Hall, and saw that four longer tables traveled the length of the room always were half full of chattering students.

A stool stood in front of the staff table, with a black hat on top. Sabrina had no idea how the hat had gotten to be there- when she had just seen it on the desk in Dumbledore's office. She and Gwen sat down with Dumbledore, and watched as Professor McGonagall called up each new student to be sorted into a house. Professor McGonagall placed the hat on each student's head as they sat down and the hat opened it's gaping mouth and shouted each house out- be it Gryffindor, Hufflepuff, Slytherin or Ravenclaw.

As the last sorted student sat down, and Professor McGonagall waved her wand and made the stool and hat disappear.

"Welcome, Welcome to another year at Hogwarts," Professor Dumbledore said, "I'd like to say a few words before we all become too befuddled by our excellent feast," He gazed out at the students. "First, I'm pleased to welcome Professor R.J. Lupin who has kindly consented to becoming the Defense Against the Dark Arts teacher," there was some applause, and then Dumbledore continued, "As for the second appointment, I'm sorry to say that Professor Kettleburn, our Care of Magical Creatures teacher, retired at the end of last year to spend some time with his remaining limbs, I am delighted to say his place will be filled by none other than our very own Rubeus Hagrid." There was a boisterous round of applause, and cheering from the Gryffindor table. "Next, I have hired two young women to join the staff as teaching assistants. This is Sabrina Spellman, and Gwen Gabriel. They will assist you in many of your assignments, and be there in a few of your classes, depending on the teacher's need. They will be mostly giving assistance to Professors Flitwick, Snape, Lupin, and McGonagall. In addition, they will escort students into Hogsmeade for all trips." There was a smatter of welcoming applause. "Finally, as you know from the search on the Hogswarts Express, we will be playing host to the dementors of Azkaban. They are stationed at every entrance to the grounds, and while they are with us, I must ask that nobody leave school without permission. Dementors will not be fooled by tricks or disguises- or even invisibility cloaks," he added mildly, "It is not the nature of the dementor to understand pleading or excuses. Therefore, I advise each and everyone of you to give them no reason to harm you. I ask that the Head Boy and Girl and the prefects, to make sure that no one runs afoul of the dementors."

There was a mutter throughout the hall, then Dumbledore clapped his hands once and the food appeared on the tables. Gwen and Sabrina eagerly reached for some food- it had been a while since they last ate and they were starving. As they ate, Sabrina glanced around the room and saw the blond boy from earlier glaring at the next table where, as Sabrina glanced over, the dark hair boy (Harry, she thought) and his two friends sat. She saw the blond boy pretending faint whenever the trio looked over.

***********************point of view change*****************************

Harry glanced at the Slytherin table where Draco was laughing and pretending to faint.

"So he's heard," Ron said in a angry tone.

"Heard what?" Parvati Patil asked, leaning across Dean to hear.

"When the Dementors came on board they made Harry faint," Ron said, ignoring Harry's headshake. Parvati gasped and turned to whisper this to Lavender Brown…. And soon the whole house of Gryffindor knew that Harry Potter fainted on the train because of the Dementors.

*************Point of View Change again*************

Everyone in the hall stood up and Gwen was pulling on her shoulder, "Come on, Sabrina, we can follow the Gryffindor students up to the common room," they stood up and followed the students they knew to be Gryffindors- and they discovered that the common room was on the seventh floor in one of the towers. A tall lanky red headed young man stood in front of a portrait of a fat middle-aged woman wearing a bubblegum pink dress.

She asked, "Password?"

The boy gave it, "Fortuna Major." They filed in through the portrait hole and Sabrina and Gwen followed them into a large room. Students sat at the tables in groups- some with the Daily Prophet, others with board games. It was still early yet, so Sabrina and Gwen sat in two chairs in front of the fireplace.

Sabrina heard whispers, "Sirius Black…" and she saw a student point out the newspaper's front page to the bushy haired girl and to the dark haired boy, and the girl gasped, grabbing the paper.

"Harry, this town, Dufftown, is right near Hogsmeade- near Hogwarts," she opened the paper, continuing to read the story, showing the front page to Sabrina and Gwen. It had a picture of a screaming (maybe a laughing) man. Sabrina briefly wondered why Harry would care.

Gwen nudged her, "Let's go introduce ourselves." Sabrina stood up and led the way to the table.

Sabrina stopped in front of the table and Gwen cleared her throat, "Excuse me."

The group stopped chatting and the girl with bushy hair stood up and said, "Hi. You must be our new teacher's assistants."

"Right. I'm Sabrina Spellman, and this is Gwen Gabriel."

"Oh, you're American," one of the red haired boys said, "I'm Ron Weasley, this is my sister, Ginny, and my brothers, Fred and George." He pointed to a red hair girl, and a set of twin boys who had stocky builds. The twin boys looked up from their card game, said, "Hi," in unison then looked away. Ginny waved and smiled shyly, "Hi." Then Ron pointed across the room to another table were another red haired boy sat polishing a silver badge, "That's Percy. He's Head Boy," there was a smirk in Ron's tone.

"I'm Hermione Granger, and these are our friends, Harry Potter, Dean Thomas, Seamus Finnegan, and Neville Longbottom," she had paused for a nanosecond at Gwen's gasp at the name Harry Potter, while Sabrina looked over at Gwen, concerned when she gasped, "This is my cat, Crookshanks," Hermione said, petting the ugliest orange cat Sabrina had ever seen. Ron scowled at the cat and checked his jacket pocket, where Sabrina saw a tail hanging out.

"Oh dear, you've got a cat," Gwen said concerned.

"Yes, is that a problem?" Hermione looked up. Gwen nodded and opened her purse, showing the hamster, Stonehenge. A sleek, but overweight black cat came down the girl's dormitory stairs and headed for the group Sabrina stood with, and jumped up on the table, saying, "Sabrina, open a can of tuna. I'm starving."

"Salem!" Sabrina exclaimed as the students gasped at the talking cat. She picked him up and said, "This is my cat, Salem Saberhagen."

"Hi," Salem said, grudgingly, "So like I said. I'm starving."

"Umm- hold on," Hermione said and she ran upstairs to the girls' dormitories. She came back down with a food dish, "Here, kitty," she said, as Sabrina set Salem down.

"Thanks," Salem said with as much dignity he could muster with his head already buried in the cat food.

"Who's Sirius Black?" Sabrina asked, watching the faces around her tighten with fear- even Gwen's.

"He's a murderer," Salem mumbled still eating.

"Right, and he escaped from Azkaban Prison a couple of weeks ago. That's why the Dementors are guarding the school," Hermione said, "Didn't Professor Dumbledore tell you?"

"No, he didn't have time before the Feast," Gwen said, "I'm sorry, Sabrina. I knew about Sirius Black and I should have said something."

Sabrina waved a hand and then said, "No problem. So Sirius Black killed someone?"

"Thirteen years ago," Seamus Finnegan said.

Harry and Ron yawned, almost in unison, then they stood up and went upstairs, waving goodnight. Soon after Neville, Dean and Seamus followed, then Ginny and Hermione walked to the door to the girl's dormitory, and were heard to be giggling as the walked upstairs. Soon the only people in the Common Room were Sabrina and Gwen and Percy Weasley. And soon even Percy wandered up to the Boys Dormitory, leaving the two older teenage girls to talk in front of the flickering fire.

"Sirius Black is more than insane," Gwen leaned closed to whisper to Sabrina, "By the time he was caught he had killed thirteen people, twelve of them Muggles."

"Muggles?" Sabrina asked

"Mortals." Gwen said, "One of the people he killed was Peter Pettigrew. No, he destroyed Pettigrew. The only thing remaining of Pettigrew was a finger."

There was stunned silence for a moment, then Sabrina asked, "How do you know all this?"

"Aunt Minerva told me a few weeks ago. We are not just here to help the teachers. We are here to protect Harry Potter and his friends."

"What do you mean?" Sabrina asked.

"My aunt told me that Sirius Black is after Harry. Some unfinished business, Aunt Minerva wouldn't say more than that. She told me that Harry and his friends tend to bend the rules, and so they need a couple extra pairs of eyes to watch out for them."

Author's Note: So this story has been in the draft process since last Spring. Hope everyone likes it. Please review.