Book excerpt: Best-selling crime fiction author James Ellroy returns with the fourth in his LA Quartet. Los Angeles, 1958: a city on the make. A boom town at the edge of a new era ripe for plunder. Lieutenant Dave Klein: in turn a lawyer, bagman, slum landlord, mob killer. Klein stands at the centre of a complex web of plots where violence and death will intersect. He's a slumlord, a bagman, an enforcer--a power in his own small corner of hell. Then the Feds announce a full-out investigation into local police corruption, and everything goes haywire. Klein's been hung out as bait, "a bad cop to draw the heat," and the heat's coming from all sides: from local politicians, from LAPD brass, from racketeers and drug kingpins--all of them hell-bent on keeping their own secrets hidden. For Klein, "forty-two and going on dead," it's dues time...