They deal with many ideas, such as sin, guilt, justification, family, gender, and, (of course), the gods.
Agamemnon is set in Argos after the Trojan War, and shows the curse, which was laid by Atreus' brother Thyestes, working on the next generation. Agamemnon had sacrificed his daughter Iphigenia and had offended the gods with destruction of their temples. On his return to Argos, he is murdered by his wife Clytemnestra and her lover Aegisthus (Thyestes' only surviving son - so he has his own reasons for murdering him). Agamemnon ends with Clytemnestra and Aegisthus tyrannizing the city while the chorus wistfully anticipates Orestes' return as the city's salvation.
At the start of The Libation Bearers, Orestes has secrectly returned to Argos to avenge his father.
Modern playwrights' versions:
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