"Don't run in the hallways!" Filch shouted. Just angry enough to set them running, then back to his real work.
Wandless as he'd been for decades, but Hogwarts' wards were easy enough to read and work without one.
Tom sure had done a number on them, and Albus had been right to pull the last great dark wizard to help the repairs.
Britain needed a new generation, after all. For the greater good.