Katharine Hilbery is beautiful and privileged but uncertain of her future. She must choose between becoming engaged to the oddly prosaic poet William, and her dangerous attraction to the lower-class Ralph. As she struggles to decide, the lives of two other women - women's rights activist Mary Datchet and Katharine's mother, struggling to weave together the documents, events and memories of her father's life into a biography - impinge on hers with unexpected and intriguing consequences.