D-Day is approaching. They don’t know where or when, but the Germans know it'll be soon, and for Felicity “Flick” Clairet, the stakes have never been higher. A senior agent in the ranks of the Special Operations Executive (SOE) responsible for sabotage, Flick has survived to become one of Britain’s most effective operatives in Northern France. She knows that the Germans’ ability to thwart the Allied attack depends upon their lines of communications, and in the days before the invasion no target is of greater strategic importance than the largest telephone exchange in Europe.