Obsessed with detail, the Stasi entirely failed to predict the end of Communism, and with it the end of the country. Between 1989 and 1990 it was turned inside out: Stalinist spy unit one day, museum the next. In its forty years, ‘the Firm’ generated the equivalent of all records in German history since the middle ages. Laid out upright and end to end, the files the Stasi kept on their countrymen and women would form a line 180 kilometres long.
