Genesis - Bernard Beckett

The island Republic has emerged from a ruined world. Its citizens are safe but not free. Until a man named Adam Forde rescues a girl from the sea. Fourteen-year-old Anax thinks she knows her history. She'd better. She's sat facing three Examiners and her five-hour examination has just begun. The subject is close to her heart: Adam Forde, her long-dead hero. In a series of startling twists, Anax discovers new things about Adam and her people that question everything she holds sacred. But why is the Academy allowing her to open up the enigma at its heart?