Traitors' World: Agents of ISIS, Book 7 by Stephen Goldin
Series: The Agents of ISIS.
Approx. 70,690 words.
Published on March 2, 2010 by
Space pirates harass interstellar shipping On the frozen world of Gulag--where the Empire's worst traitors have been exiled for centuries--dangerous plots are hatching. Time is running out for agents of the Imperial Special Investigation Service to save the Empire from the most serious revolt in its centuries-long history.