'Here we come Peeves, I wonder if lightning hurts poltergeists.' mumbled to himself silently Luther while walking in the corridor. "How can one find something that can fly and as erratic as Peeves, though?" he mused but he carried on checking the empty classrooms hoping he could catch the poltergeist doing whatever it does when it isn't causing problems for anyone included. Remembering Professor Carton's idea, he decided to be vigilant for any signs of the castle ghosts.