1947. The world continues to grapple with the fallout of the Second World War, and former war reporter Billie Walker is finding her feet as an investigator. When a wealthy client hires Billie and her assistant, Sam, to track down her missing husband, the trail leads back to London and Paris, where Billie’s own painful memories also lurk. Jack Rake, Billie’s wartime lover – and, briefly, husband – is just one of the millions of people who went missing in Europe during the war. As clues about both men land in strange dead ends, danger seems to be lurking one step behind her. Is it this latest case, or is something even more terrible than a few painful memories following Billie around the City of Light?