"Your sister is going to hell, Jack Nightingale." Somehow, variations of that line keep former police negotiator Nightingale's life careening in wild, unforeseen directions. This time, it is uttered by a dead woman hanging over a staircase, her neck broken by the laundry cord she tied around it before tossing herself over the banister. But Jack and his sister have been separated since birth. How can he save someone he's never met? Nightingale goes on the hunt for the sister he never knew, but everyone he talks to about her dies horribly. It's as if someone - or something - is determined to keep them apart. If he's going to save her, he's going to have to do what he does best: negotiate. But any negotiation with the forces of darkness comes at a terrible price, and first Jack must ask himself a question: is every soul worth saving? Sharp and intense, UK master Stephen Leather's second book in "The Nightingale Trilogy" is a taut, relentlessly paced thriller as terrifying and dark as midnight itself.