It became a sort of game. She would appear to relent for a while, and listen to him quite seriously. Then, when he would take her outer friendliness for encouragement, she would pull the switch and freeze him colder than Callisto itself. On the seventh day out, she found herself thinking, _I never knew I could be such a heel. I guess love can turn any girl into a witch at times._ Rolf’s quick answering thought, _Let’s face it, Lynne, you mean all the time, don’t you?_ served only to stiffen her wavering resolve to make him pay through his aquiline nose for this second trick he had pulled on her. Of course she intended to marry him--but not by any such drunken, underhanded ruse as he had used on her. Nor did she intend to let him get away with it. _The marlet!_ His snicker at her thoughts did little to improve her temper. Then Jupiter loomed up, increasingly, ominously, in the bow vision screen and, faced with the problem of tracking Callisto and making a landing in the proper location, Rolf forgot his outraged ego and concentrated on bringing the tiny spaceship in safely. Lynne, who admired his rough-hewn efficiency, watched him in adoration, some of which must have seeped through to warm his frozen id. Once Rolf said, “A good thing this entity or whatever it is we’re following seems to be located almost on top of the Earth Interplanetary Administration outpost. This is supposed to be a frozen hellhole.” He added a silent, _You should feel right at home there, enchilada_, and anger once more reigned voiceless but supreme in the little ship. But the terrifying splendor of Jupiter, seen from such close range, caused them again to forget their puny problems. Its sulphurous yellow cloud envelope was almost blindingly bright until, mercifully, they skirted its twilight edge and emerged into shadow, lit only by the large inner moons, Io, Europa, Ganymede and Callisto, the last two of them larger than the planet Mercury. A dazzling spectacle. Then the frozen sweeps of Callisto were flattening out beneath them, its frozen air lying in great white drifts in the Moonlike chasms between the jagged peaks that splintered the horizon on every hand. It was, Lynne thought, the most desolate sight she had ever seen. She turned away, shuddering, from the screen, only to be recalled by an urgent thought-summons from Rolf. They were over one of the satellite’s few comparatively level surface areas--and approximately in its center was an unmistakable Earthmen’s camp--or what had been an Earthmen’s camp! It looked as if it had been flattened out by a tremendous blow with the heel of some giant hand. Only a pair of spaceships, sheltered behind a natural craggy embankment, seemed to have survived intact. And on the frozen air of the planet, close alongside the desolation, the letters SOS were spelled out with empty fuel tins. “Looks as though maybe I followed the right hunch coming out here after all--with or without E.I.A. authorization,” said Rolf.