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Aboard a BOAC plane departing an unnamed Iron Curtain country, a stowaway has convinced a flight attendant to conceal him so he can defect on arrival in London. However, a high-ranking secret police officer posing as a passenger informs her that the man she's protecting is not wanted for his politics; actually, he is a murderer.
as Colonel Kralik
as Eva Kralik
as Neumann
as Pechka
as Karl Schling
as Joan Bridey
as Tom Brook
as Harry Mylner
as Dusty Fraser
as Peggy Court
as Sten
as Mueller
as Brandt