I certainly believe his master’s defeat unhinged him for a while. The murder of Pettigrew and all those Muggles was the action of a cornered and desperate man — cruel… pointless.
At least a hundred Dementors, their hidden faces pointing up at him, were standing below. It was as though freezing water was rising in his chest, cutting at his insides. And then he heard it again… someone was screaming, screaming inside his head… a woman…
Professor Lupin looked cheerful and as well as he ever did; he was talking animatedly to tiny little Professor Flitwick, the Charms teacher. Harry moved his eyes along the table, to the place where Snape sat. Was he imagining it, or were Snape’s eyes flickering towards Lupin more often than was natural?
A few curious looks were exchanged as the class put away their books. They had never had a practical Defense Against the Dark Arts before, unless you counted the memorable class last year when their old teacher had brought a cageful of pixies to class and set them loose.
They see the Grim and die of fright. The Grim’s not an omen, it’s the cause of death! And Harry’s still with us because he’s not stupid enough to see one and think, right, well, I’d better pop my clogs then!