Shite. The person was still here. Kevin heard the sound, too, and nodded at Dean's gesture, pointing towards the stairs.
They had a choice, as far as he was concerned. They could run - though he felt they had to assume that the person (or people) upstairs had already detected their presence, considering they'd driven up and had been talking at high volume up until they'd reached the door - or they could fight. If they had been found by Death Eaters, running would probably be the best option, but what were the chances of Death Eaters being here? Kevin had been fairly sure that they were slim.
He ducked into the kitchen for a second and came out holding two frying pans, passing one off to Dean. If it was a Muggle, that could serve as a weapon; if it wasn't a Muggle, maybe the pans would act as a shield against hexes? It was worth a try, at any rate.
He took the lead up the stairs, wielding the pan in one hand, his other hand still on his wand in his pocket, in case this turned into a magical duel. Very hesitantly, he peeked out onto the landing, and then stepped out, tensed and ready for anything, though honestly scared out of his wits.