A series of high-profile shootings by a lone sniper leaves Glasgow terrorised and police photographer Tony Winter - a man with a tragic hidden past - mystified. Who is behind the executions of some of the most notorious drug lords in the city? As more shootings occur - including those of police officers - the authorities realise they have a vigilante on their hands.
Meanwhile, Tony investigates a link between the victims and a schoolboy who has been badly beaten. Seemingly unconnected, they share a strange link. As Tony delves deeper, his quest for the truth and his search for the killer lead him down dark and dangerous paths.
Craig Robertson is the author of the acclaimed Random, Snapshot, Cold Grave, Witness the Dead, The Last Refuge and the forthcoming In Place of Death (September 2016).