The Bigger Monster

In the aftermath of the Third Year boggart lesson, Remus Lupin is on the hunt for a certain potions professor who has a lot to answer for. "Remus Lupin was angry. Furious. Enraged. Spitting mad. Fit to breath fire. He was angrier than he had been in a long time... "Stay away from Neville Longbottom, Severus Snape.""