Disclaimer: I do not own Charmed or Harry Potter, I am merely writing a work of fanfiction. Be kind as this is my first fanfic

Authors note: In case you were wondering, although you proberly have already guessed this is set as Harry's fourth year as if the 4th and 5th Harry Potter book haven't happened.

Piper's first thought had been 'what the hell is happening' but when she realised that was obvious - they had pushed into a vortex and had obviously reached the other side - it was quickly replaced with another.

"What the hell is this place," she asked bewildered to her sisters as she frantically tried to freeze the room. Nothing happened.

"They're not demons," answered Prue, "it must be some kind of cult."

Yes, it did look like a cult, thought Piper. "Leo," she shouted, "Leo." Nothing, well this was great.

"I hate to break it to you guys, but the demon isn't here," Prue said her voice ringing through the silent hall.

"Great, that's just great, "said Piper, her initial fear replaced with annoyance, "we're stuck in good knows where and the demon we were chasing isn't even here. Great."

It was then that she really took in her surroundings. There were four long tables in front of them filled with black-robbed children and teenagers. It appeared to be some sort of wizard school straight out of a children's book. They even had wands to complete the picture. Piper laughed silently at the ironic of it.

If this was a school, Piper thought, then where the hell are the teachers.

"Who are you?" came an angry voice from behind them. Piper turned, behind her was another table occupied by an assortment of adults. Well that explains my question. "Don't let me ask you again or there will be consequences."

"Snape put your wand down," said a white haired and bearded man, he would be the head teacher, Piper thought wryly.

She turned to her sisters. Prue was calm, emotion hidden from view yet Piper could see the panic and fear in her eyes along with a small pinch of amusement.

Phoebe it seemed was another matter, she seemed to be hyperventilating.

"Oh my god!" She shouted, "are we where I think we are?"

Piper turned in annoyance, "and where exactly do you think we are?"

"Hogwarts, of course," she answered looking at Piper as if she had sprouted another head. The name brought no recognition to Piper, or it appeared to Prue. "You know, "continued the Phoebe, "the books about the wizard Harry Potter written by J.K.Rowling. They're only my most favourite books of all time."

Something flickered through Piper's mind, an exited bubbly and impatient Phoebe waiting anxiously for a book to arrive in the mail. How she was always on at her and Prue to read it.

"You mean the children's book," said Prue, "I never knew why you read them. You're to old for children's books." But Phoebe wasn't listening, she had turned to the old guy, the one Piper had correctly assumed to be headmaster.

"I'm Phoebe Halliwel and these are my sisters Piper and Prue. We're witches."

"I don't see your wands," snapped Snape, "place them on the ground so we know they won't be used against us."

"Wands," retorted Piper, no longer just annoyed but angry too, "we don't use wands."

"Then you are not witches," he said to them while continually watching Piper, she took an instant dislike to him.

"Who say's we're not witches. I'm willing to bet we know more about the craft than you ever will." Piper replied as she pulled herself to her feet, "Leo," she shouted to the ceiling which seemed to be bewitched to look like the night sky, "get your ass down hear now!"

"I think you should leave, this is no place to discuss things." Snape said. Piper glanced around at the students; they were all staring mouths agape, it was so silent you could have heard a pin drop and the tension was so thick you could cut it.

"Oh shut up -"

"Piper this is no time to get angry," said Prue calmly. No time to get angry, Piper seethed, this time was as good as any especially seeing how this whole thing had ruined the first date she was going have with Leo in months. "Leo," she shouted.

"Oh Prue, Piper," gasped Phoebe as she jumped around excitedly, "I see him, I actually see him. It's Harry Potter."

"Oh shut up, Pheebs," said Prue and Piper at the same time.

"I'm sorry to interrupt this little sisterly pursuit but did you by any chance say your surname was Halliwel," said a female voice from behind them.

"The Charmed ones, yes we are," Piper replied briskly as she stared the guy - Snape it seemed - in the eye.

A rush of whispers came from the students in front of them. It seemed they could not stay quiet for long.

"You've heard of us," said Prue as she got up to shake the new witches hand.

"Why of course you are the greatest witches of all time are not."

"Well I wouldn't say that," answered Prue blushing.

"I thought you lived in America," shouted a voice from students, Piper had no idea who.

"San Francisco," said Piper as she began the tedious job of shaking hand after hand, "that's where we were last time I checked. Until we were pushed into the vortex and speaking of home we must be getting back. Leo!"

"Oh Piper don't be silly," squealed Phoebe, "we have to stay. We can't just leave," at which turned around, ignored her sisters and waved, a childish grin on her face, at the students.

"She's right Piper," said Prue, "we really can't leave. The demon sent as here for a reason."

"Yes and now it's proberly found some way to get to The Book Of Shadows and has completely wrecked my home in the process," Piper snapped.

The old wizard turned to them, "I'm sorry, but your sisters are right. You'll find you won't be able to leave at least for the moment."