This dissertation studies the interchange between political theatre and postwar political trials. I argue that to an extraordinary extent, theatre history in this period is inextricable from trial history. Through close archival study of mid-century theatre productions including Bertolt Brecht's 1954 production of "The Caucasian Chalk Circle" and the fifteen simultaneous premiere productions of Peter Weiss's "The Investigation" in 1965, I show how directors and playwrights looked to legal trials in order to develop and articulate theories of epic and documentary theatre, and how this new theatre in turn sought to effect justice in ways that trials alone could not.