Not since Britain's Moors Murders has one couple caused so much devastation. With every missing child Birgitte Vestergaard puts herself at greater risk to solve the murders until she faces the ultimate choice - save her own father's life or let him die to stop the killings.For Danish detective Birgitte Vestergaard a trip to Hong Kong to see her father quickly turns into a nightmare. A strange little boy playfully goads her in the street, then disappears without explanation. A young girl calls out to her the next day in a museum but also slips away unseen.They each ask her the same chilling question: "Will you save me?"Before Birgitte can figure out what they want, the little boy is found dead beneath a 12th storey window. The body of the young girl is fished out of Victoria Harbour.When a third child calls out to her from a crowded train, Birgitte knows she is at the centre of a very deadly game.With the help of a local detective and a jaded British journalist, Birgitte confronts one of England's most reviled child killers who has been living secretly in Hong Kong for several years.Behind this sinister killer lies a much more formidable evil: Janis Pollack - the woman who inspires him to kill.The deeper Birgitte digs into their sordid crimes, the closer she comes to discovering the truth about her own father.