Set just before the outbreak of WWII, this is the story of a test pilot who works for the (unnamed) enemy. Made in 1939, by the time it was released in 1940, war had been declared.

Barry K. Barnes
as Peter Thurloe

Joan Marion
as Dorothy Houghton

Roger Livesey
as Charles Houghton

Basil Radford
as Bill Madison

Everley Gregg
as Emily Madison

Felix Aylmer
as Col. Cairns

Wallace Douglas
as Agent Hooper

Henry Oscar
as Porter

John Turnbull
as Sir Andrew Hamilton

Edward Ashley
as Stuart
CinemaSerf
Not much to say about tis rather routine, short, pre-war espionage drama. Roger Livesey is an aeronautical engineer working with his team (Basil Bradford and Barry Barnes) on a top secret design for a test aircraft. Meantime Felix Aylmer ("Col. Cairns") is in charge of security and when he suspects ...