The mention of Rapture still makes Billy's stomach turn; it'd been terrifying enough exploring it with Harry, but he still remembers Teddy's story and the bruises on his body for days after. The sight of them had been a shock, a reminder that they're just two teenage boys with no power and no defenses on the island.

"He is," he says, smiling a little. Teddy would die to hear Hermione say that, knowing the other boy is already as fond of her as Billy is. "He's something special."