Book excerpt: It begins with two deaths: a money-man and a grass. Deaths that offer a unique opportunity to a man like Calum MacLean. A man who has finally had enough of killing. Meanwhile two of Glasgow's biggest criminal organizations are at quiet, deadly war with one another. And as Detective Michael Fisher knows, the biggest – and bloodiest – manoeuvres are yet to come . . . The stunning conclusion to Malcolm Mackay's lauded Glasgow Trilogy, The Sudden Arrival of Violence will return readers to the city's underworld: a place of dark motives, dangerous allegiances and inescapable violence . . .