Then the vision of an enormous town presented itself, of a monstrous town...a cruel devourer of the world's light. There was room enough there to place any story, depth enough for any passion, variety enough there for any setting, darkness enough to bury five millions of lives.' Conrad's 'monstrous town' is London, and his story of espionage and counter-espionage, anarchists and embassies, is a detective story that becomes the story of Winnie Verloc's tenacity in maintaining her devotion to her peculiar and simple-minded brother, Stevie, as they pursue their very ordinary lives above a rather dubious shop in the back streets of Soho.