The Dark Frontier
England, 1935. Physicist Henry Barstow is on holiday when he meets the mysterious Simon Groom, a representative for an armaments manufacturer. Groom invites the professor to Ixania, a small nation-state in Eastern Europe whose growing weapons program threatens to destabilize the region. Only after suffering a blow to the head—which muddles his brain into believing he is Conway Carruthers, international spy—does the mild-mannered physicist agree to visit Ixania. But he quickly recognizes that Groom has a more sinister agenda, and Carruthers is the only man who can stop him.
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Eric Ambler
Eric Ambler began his career in the early 1930s and quickly established a reputation as a thriller of extraordinary depth and originality. People often credit him as the inventor of the modern political thriller, and John Le Carré once described him as "the source on which we all draw."
Ambler began his working life at an engineering firm and then at an advertising agency and meanwhile in his spare time worked on his ambition, plays. He first published in 1936 and turned full-time as his reputation. During the war, people seconded him to the film unit of the Army, where he among other projects authored The Way Ahead with Peter Ustinov.

