This is a sensational young adult book; a unique take on an old theme. Stories about WWII aren’t my favorite, maybe because Nazi behavior is so extreme, but enter a new heroine named Sarah-a smart, sassy, blue-eyed blonde Jew struggling to survive in 1939 Germany. The action starts right away when Nazi’s shoot Sarah’s mom at a checkpoint. Fifteen-year-old Sarah escapes, meeting a mysterious yet kind man with a luxurious Berlin apartment. Using her ingenuity, she quickly learns he’s part of the Resistance. Rage at what’s happening in Germany prompts her to accept his assignment to befriend the daughter of a top Nazi scientist at an elite boarding school to discover what’s going on behind the well-guarded walls of their estate. Sarah’s classmates prove vicious, trained to prop up Third Reich ideology. She’s soon in yet another battle to survive, but woe to anyone who underestimates this cherubic looking girl. The book’s premise is farfetched but there were teenage spies during WWII, and the pacing’s so smart it’s never a problem. You’ll quickly find yourself rooting for Sarah to beat the Nazis at their own game. My highest recommendation.