This document provides an overview of the Greek tragedy Oedipus Rex by Sophocles. It summarizes the key elements of Greek drama, including the use of masks and performances in theaters of Dionysus. It then discusses the origins of Greek theater and the typical structure of tragedies. The document outlines the plot of Oedipus Rex, including the characters and prophecy of Oedipus unknowingly killing his father and marrying his mother. It also examines the play's themes of fate, identity, and the abuse of power. In closing, it briefly discusses Sophocles' views and provides a family tree of Oedipus.