Lucky Starr

David reached for the sick man, lifting him as though he were a rag doll. Artificial respiration was useless. The Space Ranger had no illusion as to the possibility of recovery. He knew the symptoms—there had been many such cases lately—the sudden flushing, the loss of voice and breath, the hopeless minute’s fight for life, and then, the end. He turned to the trembling restaurant manager and identified himself. “My name is David Starr. I am a member of the Council of Science. What was the dead man eating before he collapsed?”

From a distance it seemed an emerald green, fairyland bubble! Aphrodite, the largest city on Venus, deep beneath the planet’s sea. Earthmen had established an incredible civilization, but now it is threatened by an unknown force preying on men’s minds. “Bigman’s head snapped back at a sudden new and strange sound. It was a voice, flat, without intonation. It said, “Do not tamper with your machine of far-reaching sound. We do not wish it.” Bigman turned. His mouth fell open and, for a moment, stayed so. He said, “Who said that? Where is it?” Lucky said, “Easy, Bigman. It was inside your head.”

Sabotage!!! Agrav. It was the century’s most important advance in space travel … and an experiment so revolutionary that only the men who huddled beneath the surface of Jupiter Nine were permitted to know its full meaning. Yet someone else did know—knew everything, saw everything, head everything—and was diabolically sabotaging the top-secret mission. Who or what the enemy was, Lucky Starr didn’t know. But one thing was certain: the deadly force was not human … not even remotely human!

Earth officials were hard on the heels of the mysterious Sirian spy, Agent X, when he blasted off in a stolen spaceship. But before they could catch him, the master spy jettisoned the capsule that held his report into the icy rings of Saturn. In a flash, Lucky Starr and Bigman Jones found themselves in a race with the Sirian war fleet to recover the top secret information ...