Kate Moore's quiet Luxembourg days are filled with playdates and coffee mornings, her weekends in Paris and skiing the Alps. But Kate is also guarding a tremendous secret--one that's becoming so unbearable it begins to unravel her new expat life. She suspects that another American couple are not who they claim to be, her husband is acting suspiciously, and as she travels around Europe, she finds herself looking over her shoulder, increasingly terrified that her own past is catching up with her. As Kate begins to dig, to uncover the secrets of the people around her, she finds herself buried in layers of deceit so thick they threaten her family, her marriage, and her life.