The _Choephori_ (Libation-bearers), the second play of the trilogy, opens with the entry of Orestes. He has just laid a lock of hair on his father's tomb and sees a band of maidens approaching, among them Electra, his sister. He retires with Pylades his faithful friend to listen to their conversation. The Chorus tell how in consequence of a dream of Clytemnestra they have been sent to offer libations to the dead, to appease their anger and resentment against the murderers. They give utterance to a wild hopeless song, full of a presentiment of disaster coming on successful wickedness enthroned in power. They are captives from Troy, obliged to look on the deeds of Aegisthus, whether just or unjust, yet they weep for the purposeless agonies of Agamemnon's house. When asked by Electra what prayers she should offer to her dead father, they bid her pray for some avenging god or mortal to requite the murderers. Returning to them from the tomb, she tells them of a strange occurrence; a lock of hair has been laid on the grave, and there are two sets of footprints on the ground, one of which corresponds with her own. Orestes then comes forward to reveal himself; as a proof of his identity, he bids her consider the garments which she wove with her own hands; urging her to restrain her joy lest she betray his arrival, he tells how Apollo has commanded him to avenge his father's death, threatening him with sickness, frenzy, nightly terrors, excommunication and a dishonoured death if he refuses. In a long choral dialogue the actors tell of Clytemnestra's insolent treatment of the dead King; she had buried him without funeral rites or mourning, with no subjects to follow the corpse; she even mangled his body and thrust Electra out of the palace; thus she filled the cup of her iniquity. The Chorus remind Orestes of his duty to act, but first he inquires why oblations have been offered; on learning that they are the result of Clytemnestra's dreaming that she suckled a serpent that stung her, and that she hopes to appease the angry dead, he interprets the dream of himself. He then unfolds his plot. He and Pylades will imitate a Phocian dialect and will seek out and slay Aegisthus. An ode which succeeds recounts the legends of evil women, closing with the declaration that Justice is firmly seated in the world, that Fate prepares a sword for a murderer and a Fury punishes him with it.