****
Richard Mayhew is a plain man with a good heart and an ordinary life that is changed forever on a day he stops to help a girl he finds bleeding on a London sidewalk. From that moment forward he is propelled into a world he never dreamed existed a dark subculture flourishing in abandoned subway stations and sewer tunnels below the city a world far stranger and more dangerous than the only one he has ever known...

really REALLY good book.