DCI Alison McCoist is back: newly promoted and even less popular. Chuck Gardner is the proud owner of both a confidential paper-shredding business and a serious betting habit. When Chuck finds some scandalous paperwork and McCoist investigates a rat-nibbled corpse under a flyover, they are both sucked into a deadly stramash of gangland wars and police corruption. Can Chuck solve his gambling and gangster problems before some heed-banger feeds him into his own shredder? And can McCoist claw herself out of this latest shitemire without her own shady dealings coming to light? It might depend on how far she's prepared to go...