Oregon, 1927: Twelve-year-old Louise Pearson wants to fly. Her mother doesn't think it's ladylike; her best friend George Graham doesn't think it's safe.

But Louise doesn't feel safe on the ground. Her mother seems to be holding her at arm's length. George is preoccupied with a religious identity crisis. Worst of all, terrifying anonymous notes keep popping up where Louise least expects them.

Charles Lindbergh's celebrated crossing of the Atlantic provides some much-needed distraction for a while, but as the summer goes on and the notes grow more threatening, Louise knows she needs to figure out who is targeting her... before her worst nightmares become reality.