John Wentley Wins Through: J.F.C. Westerman

When John Wentley undertook to fly a British Secret Service agent to a forbidden zone in Central Europe, he little imagined that he would foil an attempted theft by a dangerous and unscrupulous enemy agent, take part in two aerial duels and fight against terrific odds to regain the safety of the Swiss border, with secrets in his possession on which depended the very existence of the British Empire. https://cosmiccauldronbooks.com.au/p/john-wentley-takes-charge-j-f-c-westerman/