Purple Cane Road — James Lee Burke

Robicheaux first hears it from a pimp eager to trade information for his life: Mae Guillory was murdered outside a New Orleans nightclub by two cops. Dave Robicheaux was just a boy when his mother ran out on him and his whiskey-driven father. Now Robicheaux is a man, still haunted by her desertion and her death. More than thirty-five years after Mae Guillory died, her son will go to any length to bring her killers to justice. And as he moves closer to what happened that long-ago night, the Louisiana cop crosses lines of color and class to find the place where secrets of his past lie buried ... and where all roads lead to revenge--but only one road leads to the truth....