Girl on an Altar: Summary

Girl on an Altar · Summary

This page walks through what actually happens in Marina Carr’s Girl on an Altar, in the order the play gives it to you, so you can place your evidence in the right act when you are writing under exam pressure.

How the Play Tells Its Story

Carr is working with the House of Atreus story, the same material Aeschylus used for the Oresteia, but she tells it in her own way. Much of the play is narrated monologue: a character describes what they are doing, in the present tense, speaking directly to the audience, and then steps into the scene to do it, or sometimes to do something quite different. That gap between what a character says about their own actions and what they actually go on to do runs right through the play, so keep it in mind as you work through the events below.

Act One: A False Wedding and a Sacrifice at Aulis

The play’s starting point is the Greek fleet, becalmed at Aulis. Agamemnon has been told that the wind will not change until he sacrifices his eldest daughter, Iphigenia. She is brought to Aulis under a false story, that she is going there to marry Achilles, and Clytemnestra travels with her, believing that story completely. The truth reaches Clytemnestra too late for her to stop what happens. She learns from the servant Cilissa what is taking place on the altar, and by the time she understands, her daughter is already dead. Her response is to curse Agamemnon and everything that belongs to him. This opening act sets up the wound the rest of the play keeps returning to: a mother who was deceived, a daughter who was killed, and a curse still working itself out ten years on.

Act Two: Ten Years of Silence in Mycenae

The play then jumps forward a decade. Agamemnon is away at Troy, and Clytemnestra rules Mycenae in his absence. During these years she takes Aegisthus into her bed, and she is never allowed to grieve Iphigenia openly, because the household and the state have settled on the position that the girl did not really die, or at least that her death is not something to be discussed. Hold on to this detail for any answer on grief or on the position of women in the play. Clytemnestra is holding a kingdom together while carrying a loss that nobody around her will acknowledge.

Act Two: The Homecoming

Agamemnon comes home from Troy expecting his marriage simply to resume. He brings Cassandra with him, a Trojan princess taken as a prize of war, who is pregnant. What follows is a long, unsettled stretch of Act Two in which Agamemnon and Clytemnestra circle one another. They argue, they remember the marriage they used to have, and at points they come genuinely close to repairing things. Partway through this act, in one particularly sharp exchange, Agamemnon defends the killing at Aulis as something forced on him by the army, and Clytemnestra answers him by pointing out that their daughter had no more choice than he claims to have had. That single exchange is worth knowing well, because it compresses the whole argument of the play into a handful of lines. Agamemnon’s own approach to the loss is erasure: the household is expected to behave as though Iphigenia never existed, and when that will not hold, he offers Clytemnestra substitutes, another daughter, another life, offers that only underline how replaceable he believes a child to be.

The Family Around Them

Two other figures widen the picture during this stretch of the play. Aegisthus, who is now Clytemnestra’s ally, was born into this family’s history of violence himself: his own brothers were killed by Agamemnon’s father and served at a table, long before anything in this play begins. Tyndareus, Clytemnestra’s father, arrives from outside the family entirely and says the plain thing nobody inside it can any longer see, that civilised people do not sacrifice children to change the weather. Between them they show how deep the violence in this family runs, and how rare it is for anyone close to it to see that clearly.

The Killing

The play ends with Clytemnestra killing Agamemnon, and Cassandra alongside him. Carr does not present this as one clean action seen from a single point of view. The final scene delivers the killing through several voices at once, and Cassandra, who has foreseen her own death throughout the play, narrates it as it happens to her. The effect is not triumphant. It reads closer to inevitability, a debt finally called in after ten years of waiting.

Girl on an Altar Summary: Using This in the Exam

How to use it: When a question asks you to narrate or summarise the play, do not just list events in order. Anchor your summary to the acts: the false wedding and the sacrifice in Act One, the ten years of silence and the homecoming in Act Two, and the killing in the final scene. That structure alone shows an examiner you understand how Carr has built the play, not just what happens in it.

Conclusion

Girl on an Altar takes a story that is thousands of years old, a father who kills his daughter for a wind, and asks what ten years inside that marriage actually looked like. The plot moves from a lie at Aulis, through a decade of unspoken grief, to a homecoming that almost mends and finally breaks completely. Learn that shape and you have a reliable spine for any Paper 2 answer on the play.