A young woman's desperate plea for help draws Maisie Dobbs into a complex web of secrets and deception. Maisie Dobbs, the renowned investigator, is approached by a young woman named Leonora, who is deeply troubled by the mysterious circumstances surrounding her father's recent death. Leonora believes her father was murdered, but the official verdict is suicide. As Maisie delves into the case, she uncovers a hidden past involving espionage, betrayal, and a dangerous secret that powerful individuals are determined to keep buried. The investigation forces Maisie to confront her own past and the ethical complexities of justice in post-World War I England.

Readers often praise Jacqueline Winspear's ability to weave intricate mysteries with compelling historical detail. The Maisie Dobbs series is frequently lauded for its atmospheric settings and the nuanced character development of its protagonist. This installment is noted for its exploration of the psychological and societal impacts of espionage during the interwar years. The pacing is generally considered deliberate, allowing for a deep immersion into the period and the complexities of the case.