Harry Potter and the Prisoner of Azkaban Scene 24

Scene 24

• Harry finds Sirius unconscious near a pond.
• The water suddenly freezes over. Oh, is it a magic ice-skating pond? How fun.
• Oh wait. No. It's Dementors. The opposite of fun. They're going to suck the life out of Sirius' mouth.
• But a blinding Patronus from across the pond repels the Dementors.
• Who could that Patronus, which looks like a stag, belong to?