By J. F. C. Westerman

FROM THE COVER: When JohnWentleyunder- took to fly a British Secret Service agent to a forbidden part he little imagined what would result from his escapade. How he foiled an attempt by a dangerous and un- scrupulous enemy to steal the plans of his recently invented aero engine, took part in two thrilling aerial ducls, and fought against terrific odds to regain the safety of the Swiss border--with secrets in his possession on which de-pended the very existence of the British Empireis excitingly told by one of the foremost writers of boys' adventure stories.

London. The Children's Press. 1930s. 211p. USED BOOK