As an old house is demolished in a gentrifying section of London, a workman discovers a tiny skeleton, buried for years. For journalist Kate Waters, it’s a story that deserves attention. She cobbles together a piece for her newspaper, but at a loss for answers, she can only pose a question: Who is the Building Site Baby? As Kate investigates, she unearths connections to a crime that rocked the city decades earlier: A newborn baby was stolen from the maternity ward in a local hospital and was never found. Her heartbroken parents were left devastated by the loss. But there is more to the story, and Kate is drawn—house by house—into the pasts of the people who once lived in this neighborhood that has given up its greatest mystery. And she soon finds herself the keeper of unexpected secrets that erupt in the lives of three women—and torn between what she can and cannot tell…


故事發生在倫敦一個富裕人口越來越多的地區，工人在拆除一間老舊房屋時，發現了一具被掩埋多年的小骸骨，對於身為記者的凱特．霍特思來說，這是個值得注意的事件，於是她很快寫了篇報導登報，但卻理不出答案，只能先提出一個問題：工地孩童遺骨身份為何？凱特在持續追查下發現，此案和幾十年前一起震驚社會的犯罪事件有關：某家地方醫院的一名新生兒在產房被人抱走，從此下落不明，讓嬰兒父母傷心欲絕。但這起事件並沒有那麼簡單，凱特挨家挨戶調查過程中，捲入了這個地區居民的過去，而這個地區最大的祕密早已被遺忘。不久，凱特發現自己竟守著三個女人間出乎意料的秘密，在透漏和不透漏之間進退兩難……