The tragedy Electra represents the last and the most mature creative period of Sophocles. It recounts the murder in the palace of Atreides, which reaches its peak with the matricide of Orestes. It's about the tragedy of the release of man against fate. Electra stays alone to bring in the end the 'catharsis' which is taking place with the murder of Klitaimnistra and Aigisthos. She is a tragic heroine who sets off from the very first moment her passion to take revenge. All the tragic poets have used the history of the House of Atreides, although the difference in Sophocles's play is that the matricide takes place with the consent of Gods and is absolutely justified. The guilt and the punishment weigh exclusively on Klitaimnistra and thus Erynies don't follow Orestes who gets released with his action.