This Is Halloween:
Prompt: Werewolf
Severus stopped in his tracks. He had been roaming the grounds looking for some potion ingredients when he heard the howl of a werewolf. He nearly dropped his items as he looked over his shoulder. He knew he shouldn't have been out, roaming around the grounds near midnight on Halloween but he needed a few things he couldn't find in the stores to finish a potion.
Severus glanced around quickly. Was there a werewolf near by him? Did the headmaster know there was a werewolf around? He quickly gathered up everything in his arms, running back inside the school.
The school was safe.
He was safe there.
That was one place the werewolf couldn't tread.