With his 1988 novel, Dalva, Jim Harrison commenced an epic of the American Midwest--or more specifically, the Nebraska sandhills. In The Road Home his eponymous heroine returns in search of the son she abandoned 30 years before, only to find herself more deeply enmeshed than ever in the coils of the family romance. (Quite literally, by the way: the father of Dalva's son was her half-brother.) Now, a decade later, Harrison continues her story in The Road Home. Ranging over an entire century, this second installment encompasses both Dalva's ancestry and her valedictory impulses in the face of death, circa 1987. As he did in the earlier book, the author passes the narrative baton from one character to another. There are five highly individual voices at work, including not only Dalva's own but that of her grandfather, mother, and son. This makes for a dense, Rashomon-like structure, in which events are revisited by one generation after another and truth is a relative thing--in every sense of the word. Harrison leavens this spiraling saga with splendid passages about everything from the Lakota Sioux to bird hunting, from the complexities of art to the simplicities of the wandering life: "There's a sweet, vaguely scary feeling in disappearance," notes Dalva's son, Nelse. And as always, the author can convey both the surprising beauty of a landscape and an almost suffocating sense of its abundance. "It is neither more nor less endurable in May," say