I enjoyed this book very much. It's a quick read, you get a bit of history and there's also a bit of mystery in it. I loved Rennie as a character. She was mature for her age, respected her parents (who respected her back) and seemed to be of great morals for a 13-year-old. The story is told from her point of view, which Dallas writes very well. (My only criticism is that she seems to repeat a few things throughout the book; and that's really something a good editor should catch.)
In college I read a memoir by a man who lived an a Japanese internment camp when he was younger. I don't remember the book all that well, but the basic themes stayed with me. It's really too bad that the U.S. government stooped so low during the war to imprison fellow Americans. People who were born here and had nothing to do with Pearl Harbor. But our history is our history, and I think it's important to remember it all, the good and the bad.