"We spoke to Dumbledore about your family as well Harry," Sirius steeled himself, "and the discussion... it ah, it revealed some information that Remus and I didn’t previously have. About, uh, why you’ve been having to live with your aunt and uncle," his eyes flicked away and back again, "Now, I can only apologise, but my explanation won’t be as clear as Dumbledore’s. But he said, that when Lily sacrificed herself to save you, she created a kind of shield for you. A shield that protects you from Voldemort and his followers," Harry nodded, barely able to breath, already knowing what Sirius would say next, and predicting what he would say after that, "but it only works so long as you have a home with your aunt and uncle - do you see?" Sirius sounded suddenly anxious.