Overview
Q Planes (known as Clouds Over Europe in the United States) is a 1939 British comedy spy film starring Ralph Richardson, Laurence Olivier and Valerie Hobson. Olivier and Richardson were a decade into their fifty-year friendship and were in the process of staging a theatrical version of Othello, with Richardson in the title role and Olivier as Iago, when this film was made.
Q Planes was produced by Irving Asher, an American, with British film impresario Alexander Korda as executive producer. The film was directed by an American, Tim Whelan (Sidewalks of London, and later in 1940, co-director of The Thief of Bagdad), who had lived in Britain since 1932, working for Korda at Denham Studios.
Plot
In September 1938, advanced British aircraft prototypes carrying experimental and secret equipment are vanishing with their crews on test flights. No one can fathom why, not even spymaster Major Hammond (Ralph Richardson) or his sister Kay (Valerie Hobson), a newspaper reporter, who is working undercover in the works canteen at the Barrett & Ward Aircraft Company.
At first, Major Hammond is seen as an outsider at the aircraft factory, especially by Mr. Barrett, the owner (George Merritt), who is working under a government contract. Hammond soon finds a friend in star pilot, Tony McVane (Laurence Olivier), who helps him try to solve the case. Hammond becomes convinced that Jenkins (George Curzon), the company secretary at the factory, is a mole but Jenkins is killed by a gunman firing from a moving car before he can give up the names of his contacts.
From Wikipedia (CC BY-SA 4.0).