"Sure." Harry summoned Hermione's favourite book, handed it to her, and then the condensed encyclopedia. The entire set fit in the palm of his hand, but a tap made the set expand until it was full-sized. He left it in a stack beside him and opened volume "A".
"What are we looking for? This is someone who came out of the veil and didn't go back like the others did. Luna's mum was human again, but even she went back to it." Harry flipped past Aarington, Ambercrombie, Avers. "He's powerful."