It's such a big question that Melanie doesn't know how to begin to answer it. She frowns beneath the mask, bewildered both by the question and the way Sara asks it, as if she's angry. She's had soldiers snap angry questions at her before, but that's just how soldiers are. It doesn't mean anything, not the way Miss Justineau getting angry had meant something.

She doesn't know what Sara's anger means, or if it means anything at all.

"It's different," she says at length. "There are Hungries." Has Sara even heard of Hungries? Melanie hadn't known about them until she left the bunker, but only because the soldiers and teachers and Dr. Caldwell had kept it secret from her.