In the depths of a freezing winter, Glasgow finds itself at the mercy of not one, but two serial killers. This is Detective Inspector Lorimer's worst nightmare and beyond anything he's faced in his years on the force.

Can he find a link between the brutal slaying of prostitutes in the back streets of the city and the methodical killing of several unconnected businessmen? When the latest victim turns out to be a prominent Scottish politician, the media's spotlight is shone on Lorimer's investigation.

Psychologist and criminal profiler Solly Brightman is called in to help solve the cases, but his help may be futile as they realise that someone on the inside is leaking confidential police information.

Meanwhile two killers haunt the snowy streets and Lorimer must act fast, before they strike again...Evoking the gritty truth of Glasgow like no other writer, Alex Gray has created in Lorimer the most dynamic Scottish detective since Rebus.