The Dark FrontierBy: Eric Ambler The Dark Frontier launched Eric Amblers five decade career as one of the most influential thriller writers of our time. 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