Today on KQED's Forum, Pulitzer Prize-winning author Michael Cunningham (The Hours, Specimen Days, At Home at the End of the World) talked with Michael Krasny about his new novel, By Nightfall, which tells the story of a married, middle-aged SoHo art dealer contemplating a gay affair with his brother-in-law, in what Booklist calls "an exquisite, slyly witty, warmly philosophical, and urbanely eviscerating tale of the mysteries of beauty and desire, art and delusion, age and love." Listen to the full interview below.