The Trio Is Exposed by the Thief's Downfall

PAGES: 533-535

As they ride deeper into the Gringotts Wizarding Bank vaults on a cart, they pass through the Thief's Downfall, a magical waterfall that removes all enchantments, revealing their true identities. Hermione loses her disguise as Bellatrix, and Ron's appearance reverts. They scramble to recover, with Harry re-casting the Imperius Curse on the goblin Bogrod to continue their mission. Griphook reveals that they still need the goblin to access the vault, adding urgency to their situation.