Harriet Scott Chessman takes us into the world of Mary Cassatt's early Impressionist paintings through Mary's sister Lydia, whom the author sees as Cassatt's most inspiring muse. Chessman hauntingly brings to life Paris in 1880, with its thriving art world. The novel's subtle power rises out of a sustained inquiry into art's relation to the ragged world of desire and mortality. Ill with Bright's disease and conscious of her approaching death, Lydia...