Oedipus Rex, a play by Sophocles, is a detective murder-mystery. It is the story of Liaus, a murdered king, and his sworn avenger, Oedipus. Oedipus, husband of Jocasta (Liaus's widow) is the current king of Thebes. The city is suffering under a terrible plague. Unsure of how to save his people, Oedipus sends a messenger, Creon, to Delphi. There, Creon consults the oracle of Apollo on how to save the city of Thebes.
When Creon brings the news from Delphi, Oedipus has the people listen with him. Here, Creon reveals that Liaus's murderer dwells in the city of Thebes. The plague, sent by the gods, will not subside until the killer is driven from the city. Upon hearing this, Oedipus declares himself the city's savior and Liaus's avenger. He vows not to rest until the murderer is driven from the city. Oedipus follows many steps to discover who the killer is.
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