The body of a teenager, dredged from the seabed off the coast of Sussex, is found to be missing its vital organs. Soon two more young bodies are found...
Caitlin Beckett, a fifteen-year-old in Brighton, will die if she does not receive a liver transplant, urgently. When the health system threatens to let her down, Lynn, her mother turns in panic to the internet and discovers a broker who can provide her with a black-market organ - but at a price. Prepared to do whatever it takes, Lynn scrambles to raise the money. A few days later, with Caitlin deteriorating by the hour, the organ broker tells Lynn she has found a perfect match.
With his beautiful girlfriend, Cleo, and his recent promotion, Detective Superintendent Roy Grace knows he should finally be feeling positive for the first time since his wife Sandy disappeared, nine years ago. But this new case haunts him, even more than all the others. Following the clues from the bodies, he finds himself on the trail of a gang of child traffickers operating from Eastern Europe. Soon Grace and his team will find themselves in a race against time to save the life of a young street kid, while a desperate mother will stop at nothing to save her daughter's life.