While it’s often grouped with the "Theban plays," Antigone focuses on the next generation—Oedipus' daughter.
King Oedipus vows to find the murderer of the previous king to save Thebes from a plague, only to realize that he is the killer, having unknowingly fulfilled a prophecy to kill his father and marry his mother.
While Euripides also wrote an Electra , Sophocles’ version is a masterclass in psychological endurance and the corrosive nature of revenge.