After several flights of the stairs, they finally reach a landing that leads to a long hallway, at the end of which is a heavy wooden door. Their footsteps echo in the space, and the swish of her wand is deafening as she unlocks it. A heavy click precedes its opening, and the hinges screech their protest, but Hermione slips through the opening. It slams shut as soon as they’ve both crossed the threshold.