The Flies (French: Les Mouches) is a play by Jean-Paul Sartre, written in 1943. It is an adaptation of the Electra myth, previously used by the Greek playwrights Sophocles, Aeschylus and Euripides. The play recounts the story of Orestes and his sister Electra in their quest to avenge the death of their father Agamemnon, king of Argos, by killing their mother Clytemnestra and her husband Aegisthus, who had deposed and killed him.
Sartre incorporates an existentialist theme into the play, having Electra and Orestes engaged in a battle with Zeus and his Furies, who are the gods of Argos and the centerpiece for self-abnegating religious rituals. This results in fear and a lack of for Zeus's worshippers, who live in constant shame of their humanity.
Orestes first arrives as a traveler with his tutor/slave, and does not seek involvement. Orestes has been traveling in a quest to find himself. He enters the story more as an adolescent with a girlish face, one who does not know his path or responsibility. He enters the city and introduces himself as Philebus ("lover of youth"), to disguise his true identity. Zeus has followed Orestes on his journey, and finally approaches him in Argos, introducing himself as Demetrios ("devoted to Demeter", a goddess who was in fact Zeus' own sister). Orestes has come on the eve of the day of the dead, a day of mourning to commemorate the killing of Agamemnon fifteen years prior. No townsperson aside from an aphasic "idiot boy" will speak to Orestes or his tutor because they are strangers and not mourning, remorseful or dressed in all black. Orestes meets his sister, Electra, and sees the terrible state that both she and the city are in. Electra has been treated as a servant girl since her mother and Aegisthus killed her father. She longs to exact her revenge and refuses to mourn for the sins and death of Agamemnon or of the townspeople.