"Lemon drop!" he said. This was evidently a password, because the gargoyle sprang suddenly to life and hopped aside as the wall behind him split in two. What kind of password was lemon drop? Though she hated the man, Hermione was amazed. Behind the wall was a spiral staircase that was moving smoothly upward, like an escalator. As everyone stepped onto it, Hermione heard the wall thud closed behind them. They rose upward in circles, higher and higher, until at last, slightly dizzy, Hermione saw a gleaming oak door ahead, with a brass knocker in the shape of a griffin.