Sent to investigate what he thinks is a case of fraud at a US naval base, Washington trouble-shooter Joe DeMarco soon realises that he's stumbled on something even more lethal. Accompanied by Emma, an ex-Defence Intelligence Agent, DeMarco comes up against a ruthless and vengeful woman, whose hatred of his colleague stems back to when they were submerged in the cold war. Their encounter destroyed the woman's career and turned her into a ruthless operative intent on revenge. DeMarco has never been a spy in his life, and now he is faced with one of the deadliest in the business - and what's more, he's not convinced this is someone he can fight. But this time, it's not just his own life at stake.