No one is safe. As a call handler in Kingswood Police Force's control room, Amanda Webb knows how to deal with a crisis. Robberies, kidnapping, even murder, she's been the first point of contact for them all. But when Operation Plato - the nation's coordinated response to a marauding terrorist attack - is declared, she is pushed to her limits. Only Amanda holds the critical information to the unfolding catastrophe when a phone call received by the control room will help decipher just how many more lives are at risk. As the mystery deepens and the body count continues to rise, all hopes of resolving the situation lie firmly with Amanda. The clock is ticking.