In Ex Marginalia, 20 authors of speculative fiction explore what it means to create at the intersections of their multiple marginalities. A gay man pens a letter to his departed muse, an African woman ruminates on the end of a marriage, a Filipino writer defends romantic villains. These essays chart identities and perspectives systematically excluded by a field that has failed to deliver on its promise of progress. But these voices cannot-will not-remain in the margins any longer.