The Athenian Trilogy refers to three famous ancient Greek tragedies written by the playwright Aeschylus, known as the Oresteia. This trilogy consists of three plays: Agamemnon, The Libation Bearers, and The Eumenides. It explores themes of justice, revenge, and the evolution of societal laws, focusing on the story of the House of Atreus and the consequences of familial curses. The trilogy begins with the return of Agamemnon from the Trojan War and his murder by his wife, Clytemnestra. The subsequent plays follow the quest for vengeance by their son, Orestes, and the eventual establishment of a court system to resolve conflicts, highlighting the transition from personal retribution to organized justice in ancient Athens.