A collection of all three of Sophocles ' three Theban plays, Oedipus Rex, Oedipus at Colonus, and Antigone.
Each work was part of a tetralogy, a composition made up of four distinct works.
The other three works of each tetralogy are now lost.
Although these are published under a single cover, they are not a trilogy and do not contain a continuous narrative.
The three plays were written for different festivals, sometimes years apart.
Nonetheless, the three plays cover the fate of .