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Summary
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Summary
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Agamemnon returns home from Troy after ten years of war. His wife Clytemnestra has been waiting, and not patiently. She kills him in his bath, avenging the sacrifice of their daughter Iphigenia and settling a score she has nursed for a decade. The play is the first part of the Oresteia trilogy. It sets up a cycle of violence inside the house of Atreus, where every act of justice creates a new crime that demands another response.
The play opens with a watchman on the roof of the palace at Argos. He has been waiting for a fire signal that will announce Troy's fall. When the signal comes, he is relieved but uneasy. Something is wrong in the house, and he knows it. Clytemnestra controls the stage from the beginning. She has already taken a lover, Aegisthus, and she has a plan. When Agamemnon arrives, she flatters him, spreads purple robes for him to walk on, and steers him toward his death. The robes matter: walking on them is an act of arrogance that marks Agamemnon as a man who has forgotten his limits. Cassandra, a Trojan princess Agamemnon brought home as a war prize, sees everything coming. She has the gift of prophecy and the curse that no one believes her. She describes the murders about to happen, grieves for herself, and walks into the palace knowing she will die. Her scene is the emotional center of the play. Clytemnestra kills Agamemnon in the bath, tangling him in a net-like robe so he cannot fight back. She then stands over the bodies and justifies herself publicly. She frames the murder as justice for Iphigenia. Aegisthus appears and claims political credit, but Clytemnestra is clearly the one in charge. The chorus of Argive elders reacts with horror but cannot stop anything. They represent the community watching power destroy itself. The play ends with Clytemnestra and Aegisthus in control of the palace, but the chorus warns that Orestes, Agamemnon's son, will return. The cycle is not finished.
What happens first
The play begins at night in Argos. A watchman lies on the roof of the palace, exhausted from a year of waiting for a beacon fire that will signal Troy's defeat. When the fire finally appears, he celebrates but immediately signals that something in the house troubles him. His unease frames everything that follows.
How the pressure builds
Clytemnestra announces the news of Troy's fall to the chorus of old Argive men. She describes the chain of fire signals that carried the message across the sea, and the chorus responds with a long meditation on the war, the suffering it caused, and the anger of the gods toward human pride. They recall how Agamemnon was forced to choose between his army and his daughter Iphigenia, and how he chose the army, sacrificing Iphigenia to get favorable winds for the fleet. The chorus does not forget this.
Where the story turns
A herald arrives ahead of Agamemnon and confirms the victory. He also reports that a storm scattered the Greek fleet on the way home, killing many. Agamemnon then enters in a chariot, with Cassandra beside him. Clytemnestra greets him with elaborate, almost suffocating praise. She orders servants to lay down purple or crimson tapestry cloths for him to walk on. Agamemnon resists at first, saying that kind of honor belongs to gods, not men. Clytemnestra talks him into it. He removes his sandals and walks on the cloth, and the audience understands this as a sign that his pride has made him vulnerable.
What starts to collapse
Cassandra stays silent while Clytemnestra speaks to her. After Clytemnestra goes inside, Cassandra breaks her silence with a series of visions. She sees the past crimes of the house of Atreus, including the murder of children, and she sees what is about to happen to Agamemnon and to herself. The chorus hears her but cannot understand clearly enough to act. Cassandra knows she will die and accepts it. She walks into the palace.
How it ends
From inside, Agamemnon cries out twice as he is struck. The chorus debates what to do, paralyzed by indecision. The doors open and Clytemnestra stands over two bodies: Agamemnon, caught in a robe that trapped his arms, and Cassandra. Clytemnestra does not hide or apologize. She explains that she killed Agamemnon for Iphigenia, for his arrogance, and for his infidelity. She speaks with complete control.
Why it matters
Aegisthus arrives and claims the murder was justice for crimes Agamemnon's father committed against Aegisthus's family. The chorus confronts him with contempt, pointing out that Clytemnestra did the killing while he stayed safe. Aegisthus threatens them. The chorus mentions Orestes, Agamemnon's exiled son, as a future avenger. Clytemnestra steps in to calm the standoff. She and Aegisthus go inside together, now rulers of Argos.
The moments you will actually pull into your answer.
The watchman's opening speech
He is relieved the war is over but says he has things he cannot speak aloud. This sets up the atmosphere of dread and hidden knowledge that runs through the whole play.
Agamemnon walks on the purple robes
Clytemnestra convinces him to do something he knows is impious. He removes his sandals and steps onto the cloth. This moment shows his pride overriding his judgment.
Cassandra's prophetic visions
She describes past murders in the palace and predicts her own death and Agamemnon's. The chorus half-understands her but does nothing. This scene makes the coming murder feel inevitable.
Clytemnestra stands over the bodies
After the murders, she does not flee or grieve. She explains herself to the chorus with confidence, listing her reasons. This is not a breakdown. It is a political statement.
The chorus mentions Orestes
Near the end, the elders remind Aegisthus that Orestes is still alive and will return. This plants the seed for the rest of the trilogy and signals that the cycle continues.
Questions that are actually worth answering.
Is Clytemnestra justified?
She killed Agamemnon to avenge Iphigenia. Does the play present her as a murderer, an avenger, or both? What details push you toward one reading?
What does Cassandra's scene add?
The murder would happen without her. Why does Aeschylus give her so much stage time? What does her presence change about how we understand the play?
How does the chorus function?
The elders know something is wrong and cannot act. Are they cowards, or are they genuinely powerless? What does their paralysis say about the community?
What role does pride play in Agamemnon's death?
Trace the moments where Agamemnon's ego makes him vulnerable. Is his death a punishment for pride, or is Clytemnestra's plan so good that pride is just the tool she uses?
How does the play define justice?
Both Clytemnestra and Aegisthus claim their actions are just. What does the play suggest about whether revenge and justice can be the same thing?
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