Lieutenant David Corriston arrives at the great artificial moon expecting wonder. Instead, he finds himself battling a unknown enemy in the dark, the beautiful Helen Ramsey vanished into thin air, and an alien power that has silently seized control of humanity's greatest achievement. The space station, that gleaming symbol of progress floating in the infinite black, becomes a trap where nothing is as it seems: passengers are being stripped of everything, including their very identities, replaced by imposters wearing fantastic disguises. Corriston mustrace against time to find Helen and uncover the conspiracy before the Earth itself falls to whatever lurks in the void beyond. Written in 1957, when the possibility of space stations belonged only to dreamers, this is Cold War paranoia transposed to the stars: a tale of isolation, infiltration, and the creeping dread that the enemy is already among us, wearing our faces. For readers who want their science fiction with genuine chills and a sense of cosmic menace.
