We have said that there are many and strange shadows, memories surviving from dim pasts, in this FANTASTIC UNIVERSE of ours. Poul Anderson turns to a legend from the Northern countries, countries where even today the pagan past seems only like yesterday, and tells the story of Cappen Varra, who came to Norren a long, long time ago.
David Innes, a man with a remarkable story to tell, is a mining heir who finances an experimental "iron mole," an excavating vehicle designed by his elderly inventor friend Abner Perry. In a test, they discover the vehicle cannot be turned. It burrows 500 miles into the Earth, emerging into the unknown interior world of Pellucidar.
Conan the Barbarian is employed by one of the civilized countries to help in it's push to claim lands from the primitive Picts. The Picts are not excited about the idea however. Old gods and mythical creatures are called up by the Pict witches to contest the invading army and Conan finds himself battling for his life amid the blood thirsty hordes that include saber-toothed tigers, 40 foot long venomous snakes and a demon from another dimension who is intent on crushing him.
SF writer and editor Harry Harrison explores a not too distant future where robots--particularly specialist robots who don't know their place--have quite a rough time of it. True, the Robot Equality Act had been passed--but so what?
Freshly graduated and commissioned Planeteer Lt. Rip Foster is tasked with retrieving an asteroid made of pure thorium from the asteroid belt and bringing it to Earth for use as fissionable material. But the totalitarian Connies have their own plans for the asteroid...
Since Logic derives from postulates, it never has, and never will, change a postulate. And a religious belief is a system of postulates. so how can a man fight a native superstition with logic? Or anything else...?
Commander Greylorn leads humanity's last hope, one spaceship racing through the voids of the universe. The Red Tide has all but engulfed the Earth, just enough time to find planet Omega, colonized long ago and vanished. After four years, food stores are destroyed by meteor, crew set to mutiny, and alien ship with cargo of human bodies.
A Providence, Rhode Island resident teams up with his beloved, antiquarian uncle in studying why a decrepit 18th century house has been left vacant for so long. It appears that anyone who lives in the house long enough goes crazy and/or wastes to death. Of course, our protagonists decide to spend an evening in the cellar of the house...
The story is described as a "duel of the cosmic magicians." It involves two witch doctors who conjure up ghosts and demons against each other and might appear to be fantasy. But Norton bases the wizards' magic on the use of mildly hallucinogenic drugs, psychological manipulation and latent telepathy, which place the story within the realm of science fiction.