London is steaming under a summer of filthy heat and sudden storms - and Detective Nick Belsey, of Hampstead CID, is trying to stay out of trouble. But then somebody sets him a riddle. How does a man walk into a dead-end alley and never come out? How does he disappear? And then reappear - to snatch a girl, to dump a body beneath a London skyscraper, to send Belsey a package of human hair. The answer lies underground, where the secrets degenerating beneath the city's sickly glitter are about to see the light of day.

Deep Shelter 2015, Vintage, London

ISBN-13: 9780099552758

Mass-market paperback

Deep Shelter 2014, Bourbon Street Books

ISBN-13: 9780062136725

Trade paperback

Deep Shelter 2012, Vintage Books

ISBN-13: 9780224091237