On the frozen moon Phoebe, a labor force of immense, telepathic Woollies marches under the watch of nervous Company men, and one of them, Big Bill, senses a crisis gathering long before anyone speaks. The arrival of reporter Leila Frey from Earth confirms his unease: a Woolly has killed a man, a fourth man is missing, and the moon's shabby mining outpost is hiding a deadly secret. Leila finds herself face to face with Paul Gedner, her former lover and the unquestioned master of the settlement, whose easy charm masks a mind bent on manipulation and power. As she questions the tense petrologist Leo Chaikoski about the dead mechanic Chandler, the truth begins to surface: Gedner has been controlling the Woollies, sabotaging communications, and driving everyone into fear. But his real design is far larger—to exploit Phoebe's uranium, ignite panic across the Saturnian system, and build a new regime on obedience and force. When Gedner turns predatory toward Leila, Big Bill's hidden loyalties erupt in violence, killing Gedner and shattering the scheme. In the aftermath, the moon is left to reckon with psychic domination, rebellion, and the terrible cost of using a slave race as a tool of ambition. This edition has been fully restored with modern typesetting, custom cover design.