probing uncovered a certain muddiness in Kart's thinking, a certain wandering due to doubt and fear, and he clutched at it, desperately but subtly. Prim finished reading sentence. "—and so Ters and Septem will escort Oktav back to the world, and when he is in the flesh, make disposition of him." He paused, continued. "Meanwhile, Sikst will make an expedition to recover the lost talisman, calling for aid if not immediately successful. At the same time, since the functioning of the Probability Engine is seriously hampered so long as there is an empty station, Sekond, Kart and Kant will visit the world in order to select a suitable successor for Oktav. I will remain here and—" He was interrupted by a flurry of startled thought from Kart, which rose swiftly to a peak of dismay. "My talisman! Oktav has stolen it! He is gone!" VI. Thorn teetered on the dark edge. His footgear made sudden grating noises against it as he fought for balance. He was vaguely conscious of shouts and of a needle of green light swinging down at him. Unavailingly he wrenched the muscles of his calves, flailed the air with his arms. Yet as he lurched over, as the edge receded upward—so slowly at first!—he became glad that he had fallen, for the down-chopping green needle made a red-hot splash of the place where he had been standing. He plummeted, frantically squeezing the controls of flying togs he was not wearing. There was time for a futile, spasmodic effort to get clear in his mind how, plunging through the forest, he should find himself on that dark edge. Indistinct funnel-mouths shot past, so close he almost brushed them. Then he was into something tangly that impeded his fall—slowly at first, then swiftly, as pressures ahead were built up. His motion was sickeningly reversed. He was flung upward and to one side, and came down with a bone-shaking jolt. He was knee-deep in the stuff that had broken his fall. It made a rustling, faintly skirring noise as he ploughed his way out of it. He stumbled around what must have been a corner of the dark building from whose roof he had fallen. The shouts from above were shut off.