Arch-conspirator by Veronica Roth

Outside the last city on Earth, the planet is a wasteland. Antigone’s parents have been murdered, leaving her father’s throne vacant. As her militant uncle Kreon rises to claim it, all Antigone feels is rage. When he welcomes her and her siblings into his mansion, Antigone sees it for what it really is: a gilded cage, where she is a captive as well as a guest. But her uncle will soon learn that no cage is unbreakable. And neither is he.