Koenig and Carter fly to this other Moon. They find another Moonbase, deserted and stripped of all equipment—the result of Operation Exodus. Further investigation reveals a crashed Eagle straddling the rim of the crater. Boarding the wreck, they find two dead astronauts still strapped in their seats. Wiping the dust from their helmet visors, they find themselves face to face with their dead selves. Helena's post mortem reveals the duplicate Koenig and Carter died five years earlier, killed on impact when their Eagle crashed. Koenig reckons the rest of the duplicate Alphans settled at Santa Maria. Helena agrees, feeling Regina's 'delusions' were telling them that all along. If they encounter their 'other selves', she fears what happened to Regina could happen to them all. However, unexpected events force Koenig to initiate Operation Exodus. The duplicate Moon has increased velocity—moving in the same orbit as theirs, it will collide with them in less than two days. With evacuation to Earth now a necessity, they must quickly assess the situation. Helena insists that only Koenig and Carter should go, as their other selves are dead—though she, too, must go to study the medical implications. They arrive at Santa Maria in the middle of the night, finding a settlement in a desolate valley. They land at a distance and continue on foot, Helena plagued by a nameless anxiety. On arrival, they see dwellings identical to those in Regina's painting. Sending the others out to reconnoitre, Koenig approaches the nearest geodesic house. He watches a figure making observations with a telescope. It is a duplicate Bergman. The older man seems troubled by the Moon he sees, as if it were in the wrong part of the sky; he keeps looking to the other side of the sky...where the other Moon emerges from behind a cloud bank. When Koenig steps out of the shadows, Earth Bergman does not seem at all surprised. At another living unit, Carter peeks through a window. He sees an older Sandra and another woman preparing a meal. He is startled by the identity of the other woman and tries to prevent Helena from looking. She is drawn to the window—and sees her older self. The two identical women lock eyes. Sandra shrieks in horror, bringing the Earth settlers out in force to confront some very familiar intruders. At daybreak, Bergman putters in his garden while conversing with Koenig. He tells