Gringotts

What is this chapter mainly about?

Who does Hermione impersonate using Polyjuice Potion as part of their plan?

How do Harry, Ron, Hermione, and Griphook get past the guards at the front door of Gringotts?

How do Harry, Ron, Hermione, and Griphook get past the dragon?

What happens when Harry tries to grab the Horcrux cup?

How do Harry, Ron, and Hermione escape from the bank?