FTP, name this 1947 play by Jean Genet, where the help ain't domesticated.
It was based on actual murders committed by Christine and Lea Papin that took place about fifteen years before its premiere.  It includes such lines as "when one slave loves another, it's not love," and its twisting plot with its flipping of identities made it a forerunner of the Theater of the Absurd.  With Monsieur in jail and the Madame away, a childish game of dress and make-up takes on dark undertones, as the two participants go through a ritual of scorn mixed with love, for both themselves and their masters, with an alarm clock set to stop it.  When their Madame returns, Claire and Solange's attempt to poison her fails, and one of them drinks the poisoned tea.  FTP, name this 1947 play by Jean Genet, where the help ain't domesticated.
It was based on actual murders committed by Christine and Lea Papin that took place about fifteen years before its premiere.  
The Maids or Les Bonnes