The hero of the drama belongs to that heroic house whose tragic history was among the most terrible and the most familiar to a Greek audience. Tantalus, the founder of the family, for some offence against the gods, was suffering in Hades the punishment which is christened by his name. His son Pelops was stained with the blood of Myrtilus. Of the two sons of the next generation, Thyestes seduced the wife of his brother Atreus; and Atreus in return killed the sons of Thyestes, and made the father unwittingly eat the flesh of the murdered boys. Agamemnon, son of Atreus, to propitiate Artemis, sacrificed his daughter Iphigenia, and in revenge was murdered by Clytemnestra his wife. And Clytemnestra was killed by Orestes, her son, in atonement for the death of Agamemnon. For generations the race had been dogged by crime and punishment; and in choosing for his theme the murder of Agamemnon the dramatist could assume in his audience so close a familiarity with the past history of the House that he could call into existence by an allusive word that sombre background of woe to enhance the terrors of his actual presentation. The figures he brought into vivid relief joined hands with menacing forms that faded away into the night of the future and the past; while above them hung, intoning doom, the phantom host of Furies. Yet at the outset of the drama all promises well. The watchman on the roof of the palace, in the tenth year of his watch, catches sight at last of the signal fire that announces the capture of Troy and the speedy return of Agamemnon. With joy he proclaims to the House the long- delayed and welcome news; yet even in the moment of exultation lets slip a doubtful phrase hinting at something behind, which he dares not name, something which may turn to despair the triumph of victory. Hereupon enter the chorus of Argive elders, chanting as they move to the measure of a stately march. They sing how ten years before Agamemnon and Menelaus had led forth the host of Greece, at the bidding of the Zeus who protects hospitality, to recover for Menelaus Helen his wife, treacherously stolen by Paris. Then, as they take their places and begin their rhythmic dance, in a strain of impassioned verse that is at once a narrative and a lyric hymn, they tell, or rather, present in a series of vivid images, flashing as by illumination of lightning out of a night of veiled and sombre boding, the tale of the deed that darkened the starting of the host--the sacrifice of Iphigenia to the goddess whose wrath was delaying the fleet at Aulis. In verse, in music, in pantomime, the scene lives again--the struggle in the father's heart, the insistence of his brother chiefs, the piteous glance of the girl, and at last the unutterable end; while above and through it all rings like a knell of fate the refrain that is the motive of the whole drama: "Sing woe, sing woe, but may the Good prevail."