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In page Spy fiction:

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British author Eric Ambler brought a new realism to spy fiction. The Dark Frontier (1936), Epitaph for a Spy (1938), The Mask of Dimitrios (US: A Coffin for Dimitrios, 1939), and Journey into Fear (1940) feature amateurs entangled in espionage. The politics and ideology are secondary to the personal story that involved the hero or heroine. Ambler's Popular Front–period œuvre has a left-wing perspective about the personal consequences of "big picture" politics and ideology, which was notable, given spy fiction's usual right-wing tilt in defence of establishment attitudes. Ambler's early novels Uncommon Danger (1937) and Cause for Alarm (1938), in which NKVD spies help the amateur protagonist survive, are especially remarkable among English-language spy fiction.[citation needed]