Bellatrix Black, more commonly known as Black, is talking to a young student, who is visibly cowering in front of her.

"What are you doing on this corridor, mudblood?" she snarls. "Don't you know this is a place for purebloods only?"

The student stammers a few words before Black cuts them off. "You shouldn't be here," she says, her tone cold and unemotional. "Go back to your common room before I do something I'll regret."