On his return from the Trojan war, Agamennone was murdered by his wife Clitennestra, she claims, to punish him for sacrificing their daughter Iphigenia, but in reality to be with her lover, Egisto.
Seven years later, Clitennestra was killed by her son Oreste, who had been turned away as a child and returned incognito (bringing the false news of his death) to avenge his father. Oreste, with the help of his sister Elettra, kills Clitennestra and Egisto, then goes into exile to punish himself for the crime committed, abandoning Elettra in despair.
