World War II was the introduction for many into war. Its effects were devastating on a people unprepared for the ravages that fell from the skies. Transposition tells the story of two families torn to pieces by the conflict. It also explains some of the firmness of the English class system and how hard it was to move from one level to another. Neither family is prepared for the dreadful dilemma facing them when a secret, hidden for 10 years, surfaces. The Mornays and the Blackeys are drawn together in spite of their differences to try and raise two boys into the turmoil of the post-war 50s.