Silver Sparrow, Tayari Jones

A man takes two wives, and has two daughters, about the same age, by them; try as he does to keep them separate, the center cannot hold. "There is no way to know for sure who has heard what," Chaurisse, one of the daughters, observes, "so all you could do was live your life like no one knew anything while being scared that everyone knew everything." A well-plotted, beautifully written book.