Harry was only a moment behind her, and appeared next to her almost instantly. He was glad that one of the first skills you learned as an Auror was how to Apparate and Disapparate silently; the town was dark and there was no noise except for some wildlife--and even that was subdued.
"You know I love to scare the shit out of people," Harry said, his face grim and voice low. He couldn't stop thinking about the girl they had taken, barely out of Hogwarts and now held captive by Dark Wizards. He just wished they'd gotten the whole cult the first time around, though he knew better than to dwell on mistakes made. All they could do was save this girl, and get the bad guys.
He cast a disillusionment charm over them both, then another that would take care of covering their tracks. A third charm would alert them if anyone got within a hundred meters.