Inspector Daniel Kohi of the Zimbabwean police force returns home one night to find his worst nightmare has been realised. His family dead, his house destroyed, and in fear for his life, he is forced to flee the country he loves.
Far away in Glasgow, DSI William Lorimer has his hands full. Christmas is approaching, the city is bustling, and whilst the homicide rate has been relatively low, something much darker is brewing. Counter-Terrorism have got wind of a plot, here in Lorimer's native city, to carry out an unspeakable atrocity on Christmas Eve. They need someone with local knowledge to help them root it out and who better than the head of the Scottish Major Incidents Team.
But the investigation is complicated by a spate of local murders, and by the rumours that someone is passing information to criminal organisations from inside the police force. Soon Lorimer finds himself in desperate need of assistance.