"Who's still here?" Harry looked over his shoulder, the move reminding him of the voice he had been hearing in his head ever since they'd come into the room. "Sirius, is there a ghost that came with the house that I don't know about?"
I didn't come with the house, son, but yeah, I think I'm a ghost right now.
Harry paled and dropped back into his seat. "Sirius, are you- you hearing- my father?"