It is the summer of 1939. A young Oxford don, Richard Myles, and his wife, Frances, are about to leave for their usual long vacation on the continent. At the request of a Foreign Office friend of Richard's, they agree to serve as messengers to a man involved in rescue work and anti-Nazi espionage, a man who now seems to have gone missing.

Their qualifications? Next to nothing except for Richard's superb memory and the fact that they look so very innocent. Across a continent on the brink of war, from Paris to Innsbruck and beyond, Richard and Frances travel ever deeper into danger.

Can they succeed? Will they return safely? Join them on this thrilling journey through the tense atmosphere of pre-war Europe.