Not deterred by the horrible sights of the city, including an Idiot Boy whose eyes are leaking pus, the protagonist assumes the identity of Philebus and heads to the palace.  
In the first act, the protagonist is informed that it is the Day of the Dead by the traveler Demetrios, who advises him to leave.  Not deterred by the horrible sights of the city, including an Idiot Boy whose eyes are leaking pus, the protagonist assumes the identity of Philebus and heads to the palace.  Despite Jupiter's warning, the protagonist meets up with his sister and proceeds to kill his mother and her lover, who had killed his father fifteen years earlier and seized the throne in Argos.  FTP, name this play which features the deaths of Aegisthus and Clytemnestra, a work by Jean-Paul Sartre that retells the story of the Oresteia.
In the first act, the protagonist is informed that it is the Day of the Dead by the traveler Demetrios, who advises him to leave.  
The Flies (or Les Mouches)