Invaders from Earth
by Robert Silverberg
Media: Mass market paperback
Cover art: Thomas Kidd
Earth's colony on Ganymede is under attack. The people of Earth demand reprisal, and the United Nations must take action to protect the interests of the people.
But Ted Kennedy is worried. He has been to Ganymede and seen the "people"; and knows a truth too terrifying to reveal. Only he can convince the leaders of Earth that they are victims of a hoax. His life may be forfeit, but he is determined to live long enough to stop the INVADERS FROM EARTH