In recent years, psychiatrists have become much more aware of the sexual abuse of adults with a learning disability. Having struggled with such a case, which raised challenging problems of law, ethics and management (Crichton, 1997), I turned to the literature to help inform me about the subject. There I found helpful statistics from recent surveys, but sometimes such material fails to convey the true nature of what is a distressing and painful subject. To my astonishment I discovered that at a local theatre there was to be a performance on this very theme: An Error of Judgement I had heard of the Strathcona Theatre Company, a touring company of eight learning disabled professional actors who, with the assistance of two directors, devise the original plays they perform, but I had no idea of what the evening was going to be like.