The seventh gate

"Berlin, 1932: Sophie is a smart and sexually precocious teenager, forced to live a double life when her father and boyfriend become Nazis. She finds refuge with her beloved elderly neighbor, Issac Zarco, and his friends, most of whom are Jews, ex-circus performers, and underground activists. They form a secret resistance group called the Ring. When a series of forced sterilizations, brutal murders, and "disappearings" to concentration camps decimates the group, Sophie realizes there is an informer among them. But who? Sophie must fight with all her ingenuity and guile to save all that she loves about Germany-at any cost."--Dust jacket.