1938: She was one of the six sparkling Mitford sisters, known for her stinging quips, stylish dress, and bright green eyes. But Nancy Mitford’s seemingly dazzling life was really one of turmoil: with a perpetually unfaithful and broke husband, two Nazi sympathizer sisters, and her hopes of motherhood dashed forever. With war imminent, Nancy finds respite by taking a job at the Heywood Hill Bookshop in Mayfair, hoping to make ends meet, and discovers a new life.

When Savannah history Professor Everly Winthrop is asked to guest-curate a new museum collection focusing on artifacts recovered from the steamship Pulaski, she's shocked. The ship sank after a boiler explosion in 1838, and the wreckage was just discovered, 180 years later. Everly can't resist the opportunity to try to solve some of the mysteries and myths surrounding the devastating night of its sinking. Everly's research leads her to the astounding history of a family of 11 who boarded the Pulaski together, and the extraordinary stories of two women from this family.

Lady Kathryn Lambert must marry a titled gentleman to claim her inheritance and has finally gained the attention of a duke. Yet she is unable to forget the scandalous second son who aided in her achievement - or his betrayal. Lord Griffith Stanwick is tormented by the bitter truth that as a “spare”, he will never be able to give Kathryn what she yearns to possess. But when his father is found guilty of treason, Griff detours into the dark and dangerous corners of London, haunted by memories of the woman lost to him forever.

Born into an aristocratic family, yearning for a life beyond Society’s strictures, Marguerite “Daisy” Townsend is an enterprising sleuth. Hired to obtain proof of a wife’s infidelity, she secures a position in the household of the woman’s lover, never expecting to be lured into the seductive blackguard’s arms herself. Devilishly handsome, David Blackwood, known widely as Bishop, quickly realizes the enticing maid is interested in far more than dusting. She aims to uncover his sins. Although tempted by the dangerous beauty, he can’t risk her learning the truth.

On one extraordinary day in 1940, Miriam Talan’s comfortable life is shattered. While she gives birth to her second child, a son she and her husband, Max, name Monya, the Soviets invade the Baltic state of Latvia and occupy the capital city of Riga, her home. Because the Talans are Jewish, the Soviets confiscate Max’s business and the family’s house and bank accounts, leaving them with nothing.