Ruby Lennox begins narrating her life at the moment of conception, and from there takes us on a whirlwind tour of the 20th century as seen through the eyes of an English girl determined to learn about her family and its secrets.

In the spring of 2020, Lara’s three daughters return to the family's orchard in Northern Michigan. While picking cherries, they beg their mother to tell them the story of Peter Duke, a famous actor with whom she shared both a stage and a romance years before at a theater company called Tom Lake. As Lara recalls the past, her daughters examine their own lives and relationship with their mother, and are forced to reconsider the world and everything they thought they knew.

It is 1873. Mrs. Eliza Touchet is the Scottish housekeeper—and cousin by marriage—of a once-famous novelist, now in decline, William Ainsworth, with whom she has lived for thirty years. Mrs. Touchet is a woman of many interests: literature, justice, abolitionism, class, her cousin, his wives, this life and the next. But she is also sceptical. She suspects her cousin of having no talent; his successful friend, Mr. Charles Dickens, of being a bully and a moralist; and England of being a land of facades, in which nothing is quite what it seems.

Tuscany, 1944: As Allied troops advance and bombs fall around deserted villages, a young English soldier, Ulysses Temper, finds himself in the wine cellar of a deserted villa. There, he has a chance encounter with Evelyn Skinner, a middle-aged art historian who has come to Italy to salvage paintings from the ruins and recall long-forgotten memories of her own youth. In each other, Ulysses and Evelyn find a kindred spirit amidst the rubble of war-torn Italy, and set off on a course of events that will shape Ulysses's life for the next four decades.

Two years ago, a hostile Prime Minister launched the Monochrome inquiry, investigating "historical over-reaching" by the British Secret Service “to investigate historical over-reaching.” Monochrome’s mission was to ferret out any hint of misconduct by any MI5 officer—and allowed Griselda Fleet and Malcolm Kyle, the two civil servants seconded to the project, unfettered access to any and all confidential information in the Service archives in order to do so. But MI5’s formidable First Desk did not become Britain’s top spy by accident, and she has successfully thwarted the inquiry at every turn.