It had been going on for about a week now. Muggleborns were being struck down left, right and centre, and no one knew why. Fred and George were trying to get on with their Potions essays, but were being distracted by a group of sobbing girls huddled in the corner of the Gryffindor common room. At the moment, this wasn't uncommon, given that 6 muggleborn girls had already been found bleeding out in various corridors across the school. Anyway, it was Lavender Brown and her group of shrieking cronies, and they were always hysterical about something.
"Bloody hell," said Fred, looking up momentarily to glare at the throng. "I wish they'd shut up." At this moment, Hermione Granger walked into the common room, with a stack of books in her arms. "Hey, 'Mione. Do you know what's up with them? None of them are muggleborn. They shouldn't have anything to worry about." said Fred, gesturing to the group. "Oh. Well. Didn't you hear?" replied Hermione. Fred and George shook their heads. "Parvati Patil was found this morning." The twins exchanged confused looks. "But she's a half-blood." said George, furrowing his brow. "I know." replied Hermione. "And that means that everyone is in danger. Well, all the girls, that is." And with that, she strode off towards her dorm, presumably to find somewhere quiet to study.
Fred and George turned to look at each other. "If all the girls are in danger, then what's stopping whatever it is attacking Ginny, or Katie, or 'Lina, or…" "Fred, calm down. They've not been attacked yet, and that means there's a chance for us to try and stop whatever it is" said George, looking into his brothers panicked eyes. "And we're going to stop it."