"The author of the stunning New York Times bestseller The Widow returns with a brand-new novel of twisting psychological suspense. 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?...