The Oresteia: Agamemnon, the Libation Bearers, the Eumenides

Alternate cover edition can be found here, here, here, here
In the Oresteia—the only trilogy in Greek drama which survives from antiquity—Aeschylus took as his subject the bloody chain of murder and revenge within the royal family of Argos.
Moving from darkness to light, from rage to self-governance, from primitive ritual to civilized institution, their spirit of struggle and regeneration becomes an everlasting song of celebration.