Synopsis: From the back cover of the DAW Books first edition: A ghostly avenger is what Jack Storm is forced to become when Emperor Pepys betrays the Dominion Knights into an alliance with their long-time enemy, the alien Thraks. Convinced that the Thraks and not the mysterious invaders, the Ash-farel, are still humanity's true foe, Jack goes underground in search of the truth. It is on Mistwald, home world of his friend Skaaal and the Fisher folk, that Jack finally makes the contact he needs - and prepares to launch a rebel strike into the heart of the Thrakian League. But then the Ash-farel successfully attack the rebels' transport. And, with Bogie and Jack's battle armor captured by the Ash-farel, with his allies within the Dominion Empire - the beautiful psychic Amber and St. Colin of the Blue Wheel - pursued by Jack's human enemies, will his mission of vengeance spell Jack's own doom?