Kate Moore is an expat mum, newly transplanted from Washington D.C. to Luxembourg, where her days are filled with play dates and coffee mornings. Kate is also guarding a secret - one so momentous it could destroy her. She suspects that another American couple are not who they claim to be, and finds herself looking over her shoulder, terrified her past is catching up with her. Soon Kate is buried in layers of deceit so thick they threaten her family, her marriage and her life.