A mother and daughter are snatched on their drive home from a cinema. The crime has a number of chilling similarities to a cold case Professor Nick Fennimore had been lecturing on. Then Fennimore begins receiving taunting messages - is he being targeted by the kidnapper? Meanwhile, a photograph emailed from Paris could bring Fennimore closer to discovering the fate of Suzie, his own daughter, now missing for six years. He seeks help from his old friend, DCI Kate Simms, recently returned from the US. But Kate is soon blocked from the investigation. A mother and child's lives hang in the balance as Fennimore and Simms try to break through police bureaucracy to identify their abductor.