Book excerpt: Vita Sackville-West, novelist, poet, and biographer, is best known as the friend of Virginia Woolf, who transformed her into an androgynous time-traveler in Orlando. The story of her love affair with Violet Keppel Trefusis in 1920 is one of intrigue and bewilderment. In Portrait of a Marriage, Nigel Nicolson combines his mother's vivid memoir of escapade with what he learned from copious family letters and explains the context of this romantic crisis. He also describes how Vita Sackville-West and Harold Nicolson went on to live the rest of their lives in harmonious marriage.