Detective Superintendent Lorimer's worst nightmare is a serial killer loose in his city. But two serial killers operating at once on the streets of Glasgow is a nightmare come to life. Is there a link between the brutal slaying of prostitutes in the backstreets of the city and the methodical killing of several unconnected businessmen? Lorimer is never one to jump to conclusions but something about these cases just doesn't add up.

Each killer has a different MO, but their obsession with murder is equally chilling. When the latest death is that of a prominent government minister, Lorimer finds the media's relentless scrutiny turned on his investigation. Psychologist Solly Brightman is helping with both cases, but someone within Lorimer's team is sabotaging their efforts by leaking confidential police information. Their whispers will cost lives . . . As a freezing winter grips Glasgow, two killers are relentlessly murdering in cold blood, brandishing their own kind of brutal justice, each taking greater risks and claiming more victims. For Lorimer, time is running out.Evoking the gritty truth of Glasgow like no other writer, Alex Gray has created in Lorimer the most dynamic Scottish detective since Rebus.