Professor Minerva McGonagall: [from trailer] Sirius Black is the reason the Potters are dead.
Harry Potter and the Prisoner of Azkaban
Harry Potter and the Prisoner of Azkaban
Ron: [from trailer] There's something moving out there!
Professor Lupin: It was a dementor. One of the guards from Azkaban is searching the trade for Sirius Black.
Harry Potter and the Prisoner of Azkaban
Professor Snape: [sneaks up on Harry, who is in the dark with the Marauder's Map] Potter? What are you doing wandering the corridors at night?
Harry: I'm sleepwalking.
Professor Snape: Extraordinarily like your father, you are, Potter. He was exceedingly arrogant, strutting about the castle.
Harry: My dad
didn't strut. Nor do I. Now if you don't mind, I would appreciate it if you lowered your wand.
[Snape lowers wand]