Friday rush hour, Auckland city. A lone shooter fires across a packed street and kills a man. Detective Sergeant Sean Devereaux is assigned the case. He's not complaining - his Friday nights are seldom better spent. But the inquiry is not straightforward. Witness accounts are conflicting. The dead man appears to be an unintended victim, with the true target unknown. It's a homicide that leaves police with no initial suspects and no apparent motive. Devereaux's former colleague, John Hale, is in no position to help. Hale is on his own pursuit of darkness, made all the more sinister by a dogged senior police officer determined to engineer his ruin. Together the two men hunt for the truth from those that pursue self-gain by any means.