Oedipus play was "Laius", the second was "Oedipus", and the third was "Seven against Thebes". Only the third play survives, in which Oedipus' sons Eteocles and Polynices kill each other warring over the throne. Much like his "Oresteia", this trilogy would have detailed the tribulations of a House over three successive generations. The satyr play that followed the trilogy was called "The Sphinx". As Sophocles' "Oedipus Rex" begins, the people of Thebes are begging the king for help, begging him to discover the cause of the plague. Oedipus stands before them and swears to find the root of their suffering and
Oedipus at Colonus a city in which proper boundaries and identities are not maintained, allowing the playwright to explore themes like incest, murder, and hubris in a safe setting. While the two other plays about Oedipus often bring up the theme of a person's moral responsibility for their destiny, and whether it is possible to rebel against destiny, "Oedipus at Colonus" shows Oedipus's resolution of the problem. In "Oedipus Rex," he was told by Tiresias, "You bear your fate and I will bear mine," a message repeated by the Chorus, but scorned by Oedipus, who like his father has believed he can escape