Goddess of Yesterday by Caroline B. Cooney is a young adult fantasy novel that reimagines the story of the Trojan War. It follows Anaxandra, a young girl kidnapped from her island home to serve as a companion to Princess Callisto, the disabled daughter of King Nicander. When pirates invade and destroy her home, Anaxandra is left stranded and eventually taken to Sparta, where she pretends to be the lost princess. Amid the backdrop of war, deception, and shifting loyalties, Anaxandra becomes entangled in the Trojan conflict, struggling with her identity and feelings of loyalty while caring for Helen's son, Pleisthenes. The novel explores themes of survival, identity, and the complex relationships during the Trojan War.