On the planet Scotha, the arrogant, horned aliens have meticulously plotted to conquer the Terran Empire. But Captain Dominic Flandry, Terras master saboteur, unexpectedly finds himself in a prime position to disrupt their plans. How will he do it? Every conqueror has a vulnerability, and in this thrilling tale, the Scothanis Achilles heel may just be their downfall. Experience this captivating story by the legendary Poul Anderson! - Summary by author