This is a great film for oppressed workers. We who toil daily can't help but identify with the two sisters, trapped, terrified of being fired, with only one another to turn to. Their revenge is terrible, but also, in a twisted sort of way,understandable. Besides being a beautifully acted film with a sustained mood of wonder mixed with dread, Sister My Sister explores taboo subjects: incest, lesbianism, and worker revenge. I have frequently recommended this movie to friends, and everyone of them has loved it!