reached impalpably out for prey. Vampires of energy. Vampires of life. But the Varra they could not touch or harm. The peculiar physical structure of the Varra rendered them safe from the Plutonian creatures. A World Fleet was sent out to subdue Pluto, against the advice of the Varra. It did not return. In the end we made a pact with the Varra. They conveyed us through space, protecting us, as far as they were able, from the Plutonian vampires, though they did not always succeed. Each man who ventured into the void was guarded and guided by a Varra, and therefore many lived who would otherwise have died. No ship went beyond the orbit of Neptune; even that was dangerous. No ship ever landed on Pluto. Only those guarded by the Varra were permitted to leave Earth. For the rest—space was forbidden. CHAPTER ONE Hijacker from Hell The Arctic blizzard swept needles of stinging ice against Saul Duncan’s face. Doggedly he plowed on, head lowered, heavy shoulders hunched against the fury of the winds. Once he heard the drone of a heliplane overhead, and flung himself flat till the sound had been swallowed by the gale. Then for a few moments his body refused to obey the grim demands of his mind. Deceptive warmth was stealing over him, inviting him to rest. But that, he knew, meant death then and there. If he kept going, there was a chance of safety and freedom—not much of a chance, though, for few men ever escaped alive from the Transpolar Penitentiary. Situated within the Arctic Circle, the grim, guarded fortress of stone and metal and tough plastics was safer than Alcatraz had been a century and a half ago. Yet Duncan had escaped.... His bitter lips twisted in a harsh smile. Escape! Into a polar blizzard—but that was the only possible time when a prisoner could evade the guard planes that patrolled the frigid waste. And Duncan could not have made his escape without aid from outside. With stiff fingers he fumbled out a compass-like instrument that had been smuggled to him in the penitentiary. The needle held motionless, pointing directly into the teeth of the gale. If he kept on in that direction, sooner or later he would reach Olcott’s plane. But how long it would take he did not know. Still, even dying in the blizzard was