Paperback edition of the novel which blends horror, sci-fi and detective fiction. Peter Grant is a Detective Constable and a trainee wizard, the first apprentice in 50 years. His duties involve negotiating a truce between the warring god and goddess of the Thames and digging up graves in Covent Garden. Aaronovitch has written for TV and is a London bookseller.

Ben Aaronovitch was born and raised in London and all his work has reflected his abiding fascination and love for what he modestly likes to refer to as the 'Capital of the World'. He works as a bookseller when he is not writing novels and TV scripts.