Harry and Hermione Rescue Sirius Black on Buckbeak

PAGES: 413-415

After saving Sirius Black from the Dementors, Harry and Hermione fly up to the West Tower on Buckbeak to rescue him. They open the window using the Alohomora spell and help Sirius escape just in time before the Dementors arrive. Sirius, deeply grateful, flies away on Buckbeak, leaving Harry and Hermione with the promise that they will meet again.