Nan Walker doesn’t mean to fall asleep. She never does. But tonight the creak of the ceiling fan lulls her. Evie curls warm against her side, one long leg thrown over hers. Nan’s eyes sag, her fingers relax, and her worn paperback slides onto the bed. Sleep strokes gentle hands across her eyes. The nightmare waits, constant, unchanging: muddy water, stale wet air. The car shudders in the torrent as the flood rushes past outside.