Gringotts.
Hermione Granger had taken on Bellatrix Lestrange's appearance, while Ron Weasley had taken on that of her husband, Rodolphus Lestrange.
Fred and George had each turned into a cat, held in Ron and Hermione's arms.
They had successfully fooled the goblins.
But on their way to Bellatrix Lestrange's private vault, their identities were exposed.
The falling water stripped away every disguise Hermione and the others had assumed.
The goblin escorting them to the private vault immediately sounded the alarm upon discovering this and moved to attack the four of them.
But Hermione reacted swiftly, binding the goblin with a single Water Prison Spell.
"Hurry! We've been exposed. We have to find the Holy Grail before they find us."
With that warning, Hermione immediately led Ron and the others away at a run.
Meanwhile, the goblins who had received the news quickly organized themselves and began closing in.
The goblins had abilities of their own, and they were very fast.
Griphook, one of the managers, darted through the passages.
Elsewhere.
Hermione and the others had reached Bellatrix Lestrange's private vault, which was held in the Lestrange Family's name.
It contained a great deal of the Lestrange Family's wealth, as well as what Bellatrix Lestrange had set aside for herself and her child.
"How do we open it?" Ron asked, standing before the vault door.
"Alohomora!" Fred cried, pointing his wand at the vault.
The door did not budge. There was no response at all.
Hermione and the others exchanged glances, realizing that opening this vault required a different spell.
"Let's try this. We've been researching it for ages, but we haven't had a chance to test it," George said thoughtfully, pulling out a miniature door.
Fred's eyes lit up at this. "Professor Kate gave us some ideas a while back,