Grendon Prison opened in 1962, originally intended to investigate and treat prisoners whose crimes had recognisable psychiatric causes. Thirty years later, its radical ideas of the rehabilitation of prisoners through psychological or psychotherapeutic treatment have been embraced by the Woolf Report, which clearly committed the Prison Service to a rehabilitation ambition. Based upon interviews with prisoners and prison staff, this new study of a 'model' prison will be of interest to criminologists, penologists and prison staff everywhere.