Aeschylus (525-456 BC) is the father of Greek tragedies (one legend reports that Dionysus himself commanded Aeschylus to write them). Of the seventy tragedies that he wrote, only seven have survived to the present day. These three plays form the most complete tetralogy that we have (a tetralogy contained three tragedies and one satyr play - a semi-religious, semi-mocking performance that acted as a postlude to the tragic trilogy) - only the satyr play is missing.
In Agamemnon, the Greek king returns from the Trojan War, with his prize of the Trojan prophetess Cassandra. Cassandra knows that Agamemnon's wife, Clytemnestra, will kill them, but she is fated to be not be believed. And so, the deed is done.
In The Libation Bearers, Clytemnestra has a nightmare that she gave birth to a snake, and so she sends her daughter Electra to Agamemnon's grave to pour out a libation. However, Electra meets her brother, Orestes, and the two plot revenge upon their mother, and her loved. And so, murder begets murder.
In The Eumenides, Orestes is fleeing the Furies, who are pursuing him for murdering his mother. Orestes flees to Apollo, who sends him on to Athens, to be judged by Athena herself.
This is an excellent trilogy. Even though it is over 2,000 years old, it still makes an interesting read. In particular, I enjoyed The Eumenides, with its battle of supernatural beings, and its showcasing of the development of Western jurisprudence. Overall, I found this to be an interesting and informative book, one that I do not hesitate to recommend to everyone.