Casablanca is one of the most celebrated Hollywood films of all time, its iconic romance enshrined in collective memory across generations. Drawing from archival materials, industry trade journals, and cultural commentary, Barbara Klinger explores the history of Casablanca's circulation in the United States from the early 1940s to the present by examining its exhibition via radio, repertory houses, television, and video. By resituating the film in the dynamically changing industrial, technological, and cultural circumstances that have defined its journey over eight decades, Klinger challenges our understanding of its meaning and reputation as both a Hollywood classic and a cult film. Through this single-film survey, Immortal Films proposes a new approach to the study of film history and aesthetics and, more broadly, to cinema itself as a medium in constant interface with other media as a necessary condition of its own public existence and endurance.