Laura Mulvey, author of the seminal essay Visual Pleasure and Narrative Cinema , helped to establish feminist film theory as a legitimate field of study. With Peter Wollen, she directed one of the most visually stimulating, theoretically rigorous films to emerge from the 1970s. RIDDLES OF THE SPHINX is a landmark fusion of feminism and formal experimentation that seeks to create a non-sexist film language. Its title figure, the legendary creature of antiquity, terrorized Thebes and self-destructed only after Oedipus correctly answered her riddle. Invoking and challenging traditional interpretations of the Oedipus story as a movement from matriarchal culture to patriarchal order, the film also probes representation in film itself. The central narrative section, about Louise, a middle-class woman, and her four-year-old daughter Ana, is an inquiry into the arbitrary nature of conventional film techniques that captures Louise's struggles with motherhood in a patriarchal society.