When an overprotected ten-year-old stumbles upon a boy her age drinking furtively from a spring near her home, she discovers what he's trying to keep secret: since his family began drinking the water, they haven't aged a day. There are so many middle grade stories that wrestle with death these days; in this novel, Babbit wrestles with the decidedly mixed blessing of living forever. The prose in this is really lovely (which is not a code word for boring).