Since the placement of women in this way is so necessary to patriarchy as we know it, it follows that the displacement of women would disturb the patriarchal system, and provide a challenge to that world view. The film noir world is one in which women are central to the intrigue of the films, and are furthermore usually not placed safely in any of the familiar roles mentioned above. Defined by their sexuality, which is presented as desirable but dangerous to men, the women function as the obstacle to the male quest. The hero’s success or not depends on the degree to which he can extricate himself from the woman’s manipulations. Although the man is sometimes simply destroyed because he cannot resist the woman's lures (Double Indemnity is the best example), often the work of the film is the attempted restoration of order through the exposure and then destruction of the sexual, manipulating woman.