The man wearing Professor Quirrell's clothes had the face of a middle-aged man, with a hideous scar running from beneath his right eye to his lips. He grinned broadly, exposing a mouthful of yellow teeth, his voice grating:
"Quirrell, ha, Quirrell-a greedy, cowardly fellow. An idiot among idiots! Imagine being stupid enough to give yourself a st-st-stutter! Haha, Brian, you think that's ridiculous too, don't you? Oh, but please don't mention Quirrell again. I've had enough of that name!"
His expression went from unbridled amusement to sinister menace in an instant.
Brian now understood what Snape's "air of madness" looked like in the flesh-it was perfectly natural that he had been exposed. He simply couldn't act that deranged.
From his brief observation, Brian found that not only did this man look different, but his height and voice were also vastly different from Quirrell's. And he made no attempt to conceal his contempt for Quirrell-clearly, he was not Quirrell.
But this man knew his name... and had sounded surprisingly natural when he called it-
That meant this man had interacted with him, perhaps for quite some time-well, it was probably some kind of disguise that was difficult to see through-so when had Quirrell been replaced?
Numerous possible moments flashed through Brian's mind-but Quirrell's replacement was already an established fact.
Finding out where the original Quirrell was now mattered more.
So, as he searched the impostor Quirrell out of the corner of his eye for any weapons he might be carrying, he said calmly, in a relaxed tone:
"Sounds like you know Quirrell very well... All right, where is he now, and who are you?"
"Oh-people don't like someone who refuses to listen to advice. You've made me a little unhappy."
The man stared sinisterly at Brian, looking as though he might