I. The whole thing started when the clock on the Metropolitan Tower began to run backward. It was not a graceful proceeding. The hands had been moving onward in their customary deliberate fashion, slowly and thoughtfully, but suddenly the people in the offices near the clock's face heard an ominous creaking and groaning. There was a slight, hardly discernible shiver through the tower, and then... more...

Nobody ever saw the message-torp. It wasn't to be expected. It came in on a course that extended backward to somewhere near the Rift—where there used to be Huks—and for a very, very long way it had traveled as only message-torps do travel. It hopped half a light-year in overdrive, and came back to normality long enough for its photocells to inspect the star-filled universe all about. Then it... more...

CHAPTER I The little Med Ship came out of overdrive and the stars were strange and the Milky Way seemed unfamiliar. Which, of course, was because the Milky Way and the local Cepheid marker-stars were seen from an unaccustomed angle and a not-yet-commonplace pattern of varying magnitudes. But Calhoun grunted in satisfaction. There was a banded sun off to port, which was good. A breakout at no more than... more...

PART I "... The profound influence of civilian morale upon the course of modern war is nowhere more clearly shown than in the case of that monstrous war-engine popularly known as a 'Wabbly.' It landed in New Jersey Aug. 16, 1942, and threw the whole Eastern Coast into a frenzy. In six hours the population of three States was in a panic. Industry was paralyzed. The military effect was... more...

CHAPTER ONE Jed Cochrane tried to be cynical as the helicab hummed softly through the night over the city. The cab flew at two thousand feet, where lighted buildings seemed to soar toward it from the canyons which were streets. There were lights and people everywhere, and Cochrane sardonically reminded himself that he was no better than anybody else, only he'd been trying to keep from realizing... more...

CHAPTER 1 On the morning the radar reported something odd out in space, Lockley awoke at about twenty minutes to eight. That was usual. He'd slept in a sleeping bag on a mountain-flank with other mountains all around. That was not unprecedented. He was there to make a base line measurement for a detailed map of the Boulder Lake National Park, whose facilities were now being built. Measuring a base... more...

There wasn’t anything underneath but clouds, and there wasn’t anything overhead but sky. Joe Kenmore looked out the plane window past the co-pilot’s shoulder. He stared ahead to where the sky and cloud bank joined—it was many miles away—and tried to picture the job before him. Back in the cargo space of the plane there were four big crates. They contained the pilot gyros for the most... more...

They were broadcasts from nowhere—sinister emanations flooding in from space—smashing any receiver that picked them up. What defense could Earth devise against science such as this?   Did the broadcasts foretell flesh-rending supersonic blasts? The first broadcast came in 1972, while Mahon-modified machines were still strictly classified, and the world had heard only rumors about them. The first... more...