After losing her first husband to cancer, newlywed Abby has found love again with dashing widower Declan Cafferty. On honeymoon in Ireland where Declan grew up, the idyllic start to their marriage is everything Abby hoped it would be. Until the morning Declan vanishes without a trace. Plunged into a nightmarish investigation, Abby becomes the prime suspect in his disappearance. But with no evidence to convict her, and no body to prove a crime has been committed, the Irish authorities have little choice but to let her return to the United States, while their missing person's case goes cold. Just when Abby has begun to put the pieces of her shattered life back together, she spots a woman she recognizes boarding a plane to San Francisco-a woman she was led to believe had drowned. It's Declan's first wife. As Abby begins to dig for answers, a treacherous web of lies quickly unravels. The truth has been hiding in plain sight.