By Nightfall

Peter Harris, an art dealer, is having a major midlife crisis. He finds himself sexually attracted to Ethan, his wife's much younger brother, who has come to stay in their SoHo loft. Peter sees in him a younger, provocative version of his wife, Rebecca, just as in his youth, he was drawn to Rebecca's older sister. Actor Hugh Dancy uses a slight, if vague, Southern accent to suggest Ethan and Rebecca's Virginia roots, but he doesn't demonstrate much range. Still, he ably weaves his way through Cunningham's intricate sentences, but even his talent cannot lighten the novel's ponderous prose. There are some elegant passages, but booksellers might do well to steer audio fans to The Hours or Specimen Days. A Farrar, Straus, and Giroux paperback (Reviews, July 19). (Oct.)