Germany 1944. The Allied invasion is not far away- and the high command desperately needs to know where it will take place. It is time to active one of Hitler’s last spies in Britian – Catherine Blake, a ‘sleeper’ introduced by German Intelligence vefore the war, awaiting her orders.
British Intelligence also has its orders – and a peacetime university professor, Alfred Viacry, has been recruited personally by Churchill to carry them out. When Catherine sets out to seduce the weakest link in the Allied defence it is up to Vicary to find her. And stop her. Before it is too late. But are his own people keeping something from him?