While Harry was thinking, Fred kept reciting. Clearly, last year's detentions had not been wasted.
Judging by the blank stares of the other older students present, who had also memorized this material, they clearly did not remember as much as Fred did.
Still lost in thought, Harry suddenly felt an icy gaze on him. Coming back to his senses, he discovered Snape staring intently at him, but when he looked at Snape, Snape's eyes drifted toward Fred.
At that moment, Harry heard Fred reciting:
"...without treatment, a werewolf's monthly transformation is extremely painful, and for several days afterward, they remain pale and physically weak..."
Professor Snape swept his gaze around the room and sneered:
"It seems some of Douglas's ideas are quite effective, such as making you write out your textbooks from memory... but if it were up to me, I would certainly bring in a real werewolf and tell you how to identify and kill werewolves...
"From now on, your task is to copy out this book. Now, this instant, immediately, get moving..."
Not all the students at Hogwarts were fools. After such an obvious hint from Snape, they all recalled this week's Astronomy classes. Professor Aurora Sinistra had told almost every student that the full moon was only a week away...
Some had even begun to suspect that Professor Lupin might be a werewolf, but they immediately dismissed the possibility. How could Dumbledore hire a werewolf as a professor?
Besides, Professor Holmes had repeatedly praised Professor Lupin as an outstanding expert in Defense Against Dark Magic, and he had fought against Voldemort. How could he be a werewolf...
Harry had also considered the possibility that Lupin was a werewolf, but quickly put it out of his mind. He was more inclined to believe that Black might be a