him that this is Earth, but not the world they knew. It is a past or future Earth, perhaps one where they never existed. Apart from their community, the planet is empty (aside from artefacts of an extinct civilisation). They are interrupted by the antics of two children—Paul and Sandra Morrow's offspring. Koenig admires the settlers' fortitude and commends the decision to bring back life to this dead world. Bergman wryly replies that Koenig should approve: he made it in the first place. Carter visits Earth Regina's grave. Earth Morrow informs him that she died after an unnaturally violent storm. Carter reckons that was when they came into orbit and his Regina died, too. Morrow does not feel this is a coincidence. During this, the two Helenas meet. They reflect on how they were once one person but are now two separate individuals existing at the same time. Earth Helena knows her life here is at an end. 'Death' is a means of returning to herself and to those she loves—especially her husband, John Koenig. She leaves the living unit to find him. She walks over to Koenig and, without a word, they share one tender kiss before she dies in his arms. Enraged, the Earth settlers demand that the Alphans leave immediately. Koenig tries to reason with them, but weapons are soon drawn. Bergman intercedes. He proclaims that, though they are the same people, they are trapped in different times. Should another set of Alphans come and settle on Earth, chaos and disaster would reign; as witnessed, both Regina and Helena died when confronted with their other selves. The coming collision, however, will restore normality...leaving one Moon, one community, one time. He ominously concludes if the Alphans are not on their own Moon when time corrects itself, they will have nowhere to die. After returning to Moonbase, Koenig and company solemnly await the collision. When the two Moons touch, they create a space-time schism—returning both to the chaos of the anomaly. There, the Moons merge to form a single Moon. Once complete, everything vanishes in a burst of white light—which fades as the Alphans awaken to find they are again in a different part of space. Carter wonders if the other Alphans also survived. Koenig questions if they ever really existed. Helena then reaches down and retrieves something that had fallen to the floor...a bouquet of roses given to