Historical fiction about two sisters evacuated from London during WWII and then separated during the blitz. It's told through a present day frame as one sister tells the story of how the other sister was lost to a young history student. The story of the sisters is told through the interview, and then through some letters and a diary. However, the author is American and really doesn't quite have the ability to tell the story from the point of view of a British girl; some of the vocabulary is clearly incorrect, and the attitude of the older sister Emmeline comes across as suspiciously modern American teen. Still, if you can overlook the incongruities of the American author (which probably everyone but British readers will be able to do), it's an easy read, a touching story, and heartbreaking in a few places. I don't think I'd reread it, but it was hard to put down till I finished it.