Burdened by a dark family secret, Virginia Fortescue flees her oppressive home in New York City for the battlefields of World War I France. While an ambulance driver for the Red Cross, she meets a charismatic British army surgeon whose persistent charm opens her heart to the possibility of love. As the war rages, Virginia falls into a passionate affair with the dashing Captain Simon Fitzwilliam, only to discover that his past has its own dark secrets-secrets that will damage their eventual marriage and propel her back across the Atlantic to the sister and father she left behind. Five years later, in the early days of Prohibition, the newly widowed Virginia Fitzwilliam arrives in the tropical boomtown of Cocoa Beach, Florida, to settle her husband's estate. Despite the evidence, Virginia does not believe Simon perished in the fire that destroyed the seaside home he built for her and their young daughter. Separated from her husband since the early days of their marriage, the headstrong Virginia plans to uncover the truth, for the sake of the daughter Simon never met. Simon's brother and sister welcome her with open arms and introduce her to a dazzling new world of citrus groves, white beaches, bootleggers, and Prohibition agents. But Virginia senses a predatory presence lurking beneath the irresistible, hedonistic surface of this coastal oasis. The more she learns about Simon and his mysterious business interests, the more she fears that the dangers that surrounded Simon now threaten her and their daughter's life as well.