A British secret agent in Russia rescues the daughter of a Tsarist minister from a group of Bolshevik revolutionaries.
The novel was the basis for the 1937 British film Knight Without Armour directed by Jacques Feyder and starring Marlene Dietrich and Robert Donat.
[1] It was made at Denham Studios by Alexander Korda's London Films.
Hilton's original story was adapted into a screenplay by Frances Marion, Lajos Bíró and Arthur Wimperis.
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