The Sophoclean classic: When King Agamemnon returns from the Trojan War with his new concubine Cassandra his wife Clytemnestra (who has taken Agamemnons cousin Aegisthus as a lover) kills them. Clytemnestra believes the murder was justified since Agamemnon had sacrificed their daughter Iphigenia before the war as commanded by the gods. Electra daughter of Agamemnon and Clytemnestra rescued her young twin brother Orestes from her mother by sending him to Strophius of Phocis. The play begins years later when Orestes has returned as a grown man with a plot for revenge as well as to claim the throne.