Sister My Sister is a 1994 film starring British actresses Julie Walters, Joely Richardson, and Jodhi May. The film is directed by Nancy Meckler and written by Wendy Kesselman, based on her own play, My Sister in This House. Both the play and the subsequent film deal with societal repression and its victims.
The film is based on a true incident in Le Mans, France in 1933 called the Papin murder case, where two sisters brutally murdered their employer and her daughter. The murder shocked the country, and there was much speculation about the sisters, including allegations that they were having an incestous lesbian affair with each other.