Catherine Shepherd, playwright, was the only child of Edgar David Shepherd, an Anglican clergyman from England, and his wife Margaret. Her father died when she was an infant, leaving her mother in financial difficulties. They moved back to England and lived with relations in Yorkshire. Shepherd was educated in Yorkshire and in North Wales at Howell's School, Denbigh. She won a scholarship to the University College, London, where she graduated with a B.A.(Honours) in English in 1923 and then a Diploma of Education.
A dramatic story of fifth columnism, this play takes as its focus a schoolteacher's marriage, to show how the subtle infiltration of outside espionage (in this case, Nazism) can damage not only the political sphere but also the domestic space.
See the AustLit record for Sabotage where you can download the play.