The introduction sets out the case for the book. Evacuation is a somewhat understudied thing. The book draws on a framework to consider evacuation as a term or word, a concept or an idea, and a practice. Evacuation has lacked critical scrutiny in many fields, primarily because it is considered somewhat technical. That technicality is itself an aesthetic category, which can mean evacuation has a kind of allure, and it might slip outside of the terrain of politics: it seems urgent, careful, necessary—and that makes it difficult to challenge, or to denaturalize who should and shouldn’t be part of its care, and who should decide over it. The notion of evacuation’s recursions is also introduced. The chapter concludes by setting out the structure of the book.