((Yep. I made a Macbeth -I mean 'Scottish play' - reference.))

Merit Lupien sat on the floor of the girls' lavatory - you know, the abandoned one with the ghost in it - finishing off her Polyjuice potion. She had followed the precise instructions in the potions textbook (obviously not her own) over the past month and brewed everything exactly.

She then heard a chirp looking over to see a bird perched on the window outside the room. She plucked a strand of her own hair from her head, putting it into the potion and stirred for good measure before opening the window.

The bird flew in and transformed back into Holly Heavensong herself. "Good girl. If I were your head of house, I'd award you points for a job well done." She took a drink from a ladle full of the liquid, slowly turning into Merit.

Merit - or Holly - exited the room after knocking the real Lupien girl unconscious and stealing her wand. Holly believed that if you wanted to truly steal an identity, you had to go all the way. And of course, she had a hidden bottle of the sludgy brew on hand.

((The RP will start from the point after Holly leaves the bathroom looking like Merit. No one knows of the potion yet.))