The Blind Assassin by Margaret Atwood with intricate plots is full of contextual tension and can be interpreted from different angles.In this paper I am going to contextualize the seemingly unbelievable kinship between Iris and her sister Laura from the perspective of Psychoanalysis,which externalizes the relationship between id and superego.Laura is the alienation of the id of Iris.Laura is what Iris desires to be and what her superego represses and repulses.