A companion to Aria Dean’s Abattoir, U.S.A.! Aria Dean’s moving image work Abattoir, U.S.A.!, presented in the eponymous exhibition at the Renaissance Society between February and April 2023, surveys the interior of an empty slaughterhouse. This slaughterhouse was built and animated using Unreal Engine, a 3D computer graphics tool for creating virtual environments. The viewer follows a linear path through an impossible architecture—a seamless combination of nineteenth, twentieth, and twenty-first-century design elements and non-Euclidean spaces. Dean was initially inspired by philosophers Georges Bataille and Frank Wilderson, each of whom address the slaughterhouse in their writings –whether as a metaphor or paradigm—as crucial to the construction of civil society.  Abattoir, U.S.A.! also builds on Dean’s own research into the slaughterhouse and industrial architecture and the ways they reveal modernism’s intimacy with death on conceptual, political, and material levels. This book documents the exhibition as well as selected material from Dean’s process and research. It includes essays by film scholar Erika Balsom, who writes on the history of abattoirs and their relation to modernism, Afropessimist theory, and the dehumanizing rationality of capitalism.  Architect and writer Keller Easterling contributes a quasi-fictional text from her ongoing series of Draft Teenage Essays, which are part of her collection of experimental writings titled No One Thing. This volume also includes transcripts of two conversations: one between Dean and film historian Bruce Jenkins in which they discuss Dean’s work in relation to historical avant-garde films; and another with Dean and co-director of Rhizome Michael Connor, media artist Filip Kostik, and composer Evan Zierk, who created the soundtrack for Abattoir, U.S.A.! Together they discuss the technical process of using Unreal Engine and the nature of virtuality.