For her entire life, FBI agent Atlee Pine has been searching for her twin sister, Mercy, who was abducted at the age of six and never seen again. Mercy’s disappearance left behind a damaged family that later shattered beyond repair when Atlee’s parents inexplicably abandoned her. Now, after a perilous investigation that nearly proved fatal, Atlee has finally discovered not only the reason behind her parents’ abandonment and Mercy’s kidnapping, but also the most promising breakthrough yet: proof that Mercy survived her abduction and then escaped her captors many years ago. Though Atlee is tantalizingly close to her family at last, the final leg of her long road to Mercy will be the most treacherous yet. Mercy left at least one dead body behind before fleeing her captors years before. Atlee has no idea if her sister is still alive, and if so, how she has been surviving all this time. When the truth is finally revealed, Atlee Pine will face the greatest danger yet, and it may well cost her everything.


聯邦調查局幹員艾特莉•派恩一生都在尋找她的攣生妹妹茉希，自從她在六歲時被綁架後就失去了音訊。茉希的失踪留下一個受創的家庭，後來當艾特莉的父母無故拋棄她時，這個家庭從此就破碎了。現在，經過證實這幾乎是一件致命的調查，艾特莉不僅發現了她父母遺棄她以及茉希被綁架的原因，而且還發現案發迄今最有希望的突破：茉希在多年前曾逃出綁匪的魔掌。儘管艾特莉最後跟家人變得比以往親密，但她在找尋茉希的漫漫長路上，將面臨最危險的最後一關。茉希多年前逃離她的綁匪之前，至少留下了一具屍體。艾特莉不知道她的妹妹是否還活著，如果是的話，她是如何活到現在的?當真相最終被揭露時，艾特莉•派恩將面臨最大的危險，她可能要付慘痛的代價。