Set in the American South in the years before and during the Civil War, John Wray's hypnotic new novel is at once a crime story, a bravura work of historical fiction, and a fire-and-brimstone meditation on American credulity and corruption. Thaddeus Morelle's followers call him "the Redeemer." Over the years he has led the Island 37 Gang from stealing horses to stealing slaves in an enterprise so nefarious that both the Union and Confederacy...