The offer of $30,000 for one day's work in London, followed by a family vacation in an exotic locale, seems too good to be true for Brooklyn private investigators Karin Schaeffer and her husband, Mac. Putting Mac’s investigations into the alleged marital infidelities of billionaire Godfrey Millerhausen on hold, the family finds paradise in the sun-drenched Mediterranean island of Sardinia. But the holiday turns dark and terrible when the children vanish.

Girls are vanishing off the streets of New York City, and young women are being murdered. When the violence descends on Karin Schaeffer and Mac MacLeary's comfortable Brooklyn neighborhood, and their best friend becomes the lead investigator, they are drawn into the bewildering series of crimes. As the mystery deepens, what looks like the work of a garden-variety serial killer turns out to be an evil darker than anyone imagined.