Agamemnon is a tragedy written by the ancient Greek playwright Aeschylus. It is the first play in the Oresteia trilogy and tells the story of Agamemnon, the king of Mycenae, who returns home after the Trojan War. His return is marked by tension and betrayal, as he is unaware of the deadly plot his wife, Clytemnestra, has devised against him. The play explores themes of revenge, justice, and the consequences of war. Clytemnestra seeks vengeance for the sacrifice of their daughter, Iphigenia, which Agamemnon made to appease the gods for favorable winds to sail to Troy. The tragic events unfold, leading to a cycle of violence within the royal family.