james friezeIn a fashion that harks back to the birth of naturalistic drama, but also reflects contemporary anxieties about the etiolation of the real, the forensic capabilities of theatre have become, in the last two decades, the primary focus of theatrical attention. Reconsidering landmark works and rhetorical frames that helped to establish verbatim, virtual and in-yer-face theatre, this article explores the ways in which these key works and genres deploy, and attempt to jam, theatre's diagnostic machinery. The article contextualizes that machinery in relation to the medical underpinnings of naturalism, the growth of theatrical reflexivity from Pirandello to Beckett to Blast Theory, and the televisual phenomena of crime-scene investigation and fly-on-the-wall 'reality shows'. In the final section I move to address two works which are explicitly about diagnosis, but which, in signal and purposeful ways, evade diagnosis: Must, by American performance artist Peggy Shaw and British company Clod Ensemble; and If That's All There Is, by UK-based company Inspector Sands.Downloaded