Set just before the outbreak of WWII, this is the story of a test pilot who works for an (unnamed) enemy.

Barry K. Barnes ... Peter Thurloe
Joan Marion ... Dorothy Houghton
Roger Livesey ... Charles Houghton
Basil Radford ... Bill Madison
Everley Gregg ... Emily Madison
Felix Aylmer ... Col. Cairns
Wallace Douglas ... Agent Hooper
Henry Oscar ... Porter
John Turnbull ... Sir Andrew Hamilton
Edward Ashley ... Stuart
Hal Walters ... Kingswell
Santos Casani ... Foreigner
Ernest Blyth ... Secret Service Agent
David Davies ... Detective

Directed by David MacDonald