This chapter outlines the approaches, definitions, and theories used throughout the book, before giving a structural overview of each chapter. Firstly, the chapter directly addresses the accusations of gimmickry that have been directed towards extreme art film, mapping the reception climate and evaluating the most popular and widespread responses. From this, it becomes clear that a lack of attention has been paid to the commercial identity of the film, and the way extremity informs its commercial persona. Thereafter, the chapter historicises extreme art cinema, positioning it as an outcome of taste slippage, and the blurring of boundaries between art cinema and exploitation cinema. By paying particular attention to representations of the body within both highbrow and lowbrow cinema, the chapter argues that convincing similarities exist between the cinematic traditions. Additionally, the chapter challenges the popular Francophile definition of extreme art cinema, broadening the geographic scope of the field by looking at films from Denmark, Sweden, Spain, Italy and Belgium. Finally, the chapter introduces paratextual theory, and details the way the preeminent ideas will be applied to the discussion of extreme art film paratexts.