New York in the 1900s. A young girl fascinated by rare books defies all odds and becomes the director of one of the country's most prestigious private libraries. It belongs to the magnate J.P. Morgan, darling of the international aristocracy and one of the city's richest men. Flamboyant, brilliant, beautiful, Belle is among New York society's most sought-after intellectuals. She also hides a secret. Although she looks white, she is African American, the daughter of a famous Black activist who sees her desire to hide her origins as the consummate betrayal. Torn between history's ineluctable imperatives and the freedom to belong to the society of her choosing, Belle's drama, which plays out in a violently racist America, is one that resonates forcefully and illuminatingly even today.