This thesis comprises two works: a novel ‘Libertine’ and a monograph ‘A writer’s reflection’. ‘Libertine’contemplates the eroticising and brutalising of being, and sex as currency, as need and as sacrament. It is set in a city where war is the norm, nightmare the standard, and ancient deities are called upon to witness the new order of killing technologies. The story is narrated by a woman chosen to be the consort of the General, a despostic war leader who believes that he has been chosen by the goddess Kali. She journeys deep into a horror which exists not only around her, but also within her. ‘Libertine’, by melding the erotic and the Gothic, tells the story of a woman enacting the role cast for her in the complex theatres of war. ‘A writer’s reflection’ discusses the themes of the novel, introducing the notion of existential erotica. The existential experience particular to the expression of the erotic being is discussed, and the dilemma which arises from a self yearning to merge ecstatically with an/other in order to obtain a heightened or differently valued self. This theme is elaborated in ‘Libertine’ with regard to subjectivity and the broader issues of nausea, horror and choice, drawing on the conventions of Gothic literature and apocalyptic visioning. This visioning, as eroticised death worship, is found in a Sadian credo of cruelty, the tantric rituals of Kali devotion, and the annihilating erotic excess propounded by Bataille. The monograph illustrated that ‘Libertine’ is not a re-representation of these elements, but an original contribution to the literature of erotica. / Doctor of Philosophy (PhD)