Ashley Lawson's On Edge presents a new picture of postwar American literature, arguing that biases against genre fiction have unfairly disadvantaged the legacies of authors like Shirley Jackson, Patricia Highsmith, and Leigh Brackett. Each of these women navigated a male-dominated postwar publishing world without compromising their values. Their category-defying treatment of gender roles and genre classifications created suspense in their work that spoke to the tensions of the "Age of Anxiety." Lawson engages with foundational voices in American literature, genre theory, and feminism to argue that, by merging the dominant mode of literary realism with fantastical or heightened elements, Brackett, Jackson, and Highsmith responded to the big questions of their era with startling and unnerving answers. By elevating genre play to a marker of literary skill, Lawson contends, we can secure these writers a more prominent place within the canon of midcentury American literature and open the door for the recovery of their similarly innovative peers.