He heard rustling footsteps at the door. He waited patiently as his eyes focused on the door. Nobody was ringing the doorbell. Then, he heard a low hum coming from Krum. His hand reached into his pocket, seemingly fumbling at something. When Hermione turned her attention to old Mr. Weasley, who was keen to learn more about Muggle artefacts, Krum took out a small black deluminator-sized object. After taking a look at it, Krum raised his eyebrow and glanced at the door. After a moment of hesitation, he walked towards the door.