Richard Mayhew is a young businessman with a good heart and a dull job. When he stops one day to help a girl he finds bleeding on a London sidewalk, his life is forever altered, for he finds himself propelled into an alternate reality that exists in a subterranean labyrinth of sewer canals and abandoned subway stations below the city. He has fallen through the cracks of reality and has landed somewhere different, somewhere that is Neverwhere.

Includes the novella How the Marquis Got His Coat Back.