They were beautiful crystals, cool and smooth. They opened doorways to magical realms, leading to escape, happiness, peace. But they exacted a terrible price for they were an incredible narcotic. After only a single use, they dragged you in, sucked your soul dry, leaving you to lingering death. — Where did they come from? And what really were they? For Gleia, Shounach, and Deel it had become a matter of desperate urgency, for each has lost someone to the Eyes, someone they could not forget. For them the source of these damnable jewels must be found and destroyed. Otherwise the Ranga Eyes would destroy them and all their world.

    Richard Seaton acquires rights to his discovery from the government and commercializes it with the aid of his friend, millionaire inventor Martin Crane. When a former colleague tries to steal the invention, not only the future of Dr. Seaton and his allies, but ultimately the entire world hangs in the balance!The first of the great "space opera" science fiction novels, The Skylark of Space remains a thrilling tale more than 80 years after its creation."With the exception of the works of H. G. Wells, possibly those of Jules Verne -- and almost no other writer -- it has inspired more imitators and done more to change the nature of all the science fiction written after it than almost any other single work." -- Frederik Pohl

    Ace Double 51375 includes:The Lord of the Trees by Philip José FarmerThe Mad Goblin by Philip José Farmer

    . . a sophisticated traveler between many worlds. But he had certainly never thought of himself as a hero.Skua September, on the other hand, never thought of himself as anything else.A matched pair, if ever there was one!When the two of them were suddenly stranded on a deadly frozen world, Ethan Fortune incredibly found himself cast in the role of Leader.And he didn't find that at all amusing . . .

    The ISBN 0-440-04182-1 is derived from the SBN 440-04182-095 on the spine.JANDAR THE ALIEN ENSLAVEDon Callisto, moon of Jupiter, a world of black and crimson jungles where the hand of every man is lifted in eternal enmity against every other... a savage, hostile world on which he is first held prisoner by the fearsome insect-men, only to be freed for a more binding slavery in the deadly clutches of the insidious Sky Pirates... and in the incalculable aura of the beautiful princess Darloona who elicits love almost beyond the limits of his mortal soul...(Source: back cover)

    When the two college students develop a faster-than-light space drive in their homemade workshed, they decide to sneak it aboard their football team's airplane as a prank. The boyish plan backfires, however, and the boys find themselves, along with their crush Sally and the seemingly loveable school caretaker, Old John, hurtling through the solar system towards Titan—an icy moon of Saturn inhabited by hideous ice creatures. Titan and the 20th century are only square one as the foursome becomes embroiled in a vast, intergalactic, century-jumping battle.

    The vital foodstuffs supplied by its Martian colony are being poisoned. Working in secret, the ruling Council of Science sends David Starr, its youngest member, to the Martian farmlands to discover the truth behind the murders...

    The Gloria Mundi, a star ship built and manned by the new United States of Europe, touches down on the planet, Alatair Five. Disaster strikes, leaving only one apparent survivor - an Englishman named Paul Marlow, whose adventures in the lair of a strange primeval race knowan as the Bayani leads him firstly to their God, the omnipotent and omniscient Oruri, and eventually to an unlimited power that is so great that it must include a built-in death sentence. The forces that have remained static for centuries overcome both the forces of the future and the quest for unlimited knowledge.

    1 RefugeeCALIGULA OF THE STARSThough he was later accused of every crime and sexual perversion in the galaxy, Hope Hubris began as an innocent. Because he defended his older sister against the violent lusts of a wealthy scion, Hope and his peasant family were forced to flee Callisto, one of the moons of Jupiter. Pursued by the bloodthirsty scions across the airless desert, they barely escaped with their lives. The illegal space bubble was overcrowded with refugees, all hoping to reach Jupiter for asylum.But the space travelers had not reckoned on the terrible threat of high space-the pirates, barbaric men who rape, rob, and murder, with no thought but to satisfy their bestial appetites. It will take all Hope's ingenuity to survive, but the atrocities he witnesses will never die. There is only one way he can be rid of them . . . REVENGE

    Once he was outbound, where the Society that ruled Earth could not reach him, he headed his starship toward the galactic core, where the unimaginable energies of the Universe wrenched the fabric of time and space and promised final escape from his captors.Then he returned to an Earth eons older than the one he'd left...a planet that had had 3,000,000 years to develop perils he had never dreamed of -- perils that became nightmares that he had to escape...somehow!

    To get into space you either needed connections, a membership in the Guild, or a whole lot more money than Max, the son of a widowed, poor mother, was every going to have. What Max does have going for him are his uncle’s prized astrogation manuals—book on star navigation that Max literally commits to memory word for word, equation for equation. From the First Golden Age of Heinlein, this is the so-called juvenile (written, Heinlein always claims, just as much for adults) that started them all and made Heinlein a legend for multiple generations of readers.

    Donaldson returns with this exciting and long-awaited new series that takes us into a stunningly imagined future to tell a timeless story of adventure and the implacable conflict of good and evil within each of us.Angus Thermopyle was an ore pirate and a murderer; even the most disreputable asteroid pilots of Delta Sector stayed locked out of his way.  Those who didn't ended up in the lockup--or dead.  But when Thermopyle arrived at Mallory's Bar & Sleep with a gorgeous woman by his side the regulars had to take notice.  Her name was Morn Hyland, and she had been a police officer--until she met up with Thermopyle.But one person in Mallory's Bar wasn't intimidated.  Nick Succorso had his own reputation as a bold pirate and he had a sleek frigate fitted for deep space.  Everyone knew that Thermopyle and Succorso were on a collision course.  What nobody expected was how quickly it would be over--or how devastating victory would be.  It was common enough example of rivalry and revenge--or so everyone thought.  The REAL story was something entirely different.In The Real Story, Stephen R. Donaldson takes us to a remarkably detailed world of faster-than-light travel, politics, betrayal, and a shadowy presence just outside our view to tell the fiercest, most profound story he has ever written.

    First published in 1952. It contains the following stories:Far Centaurus (1944) The Monster (1948) Dormant (1948) The Enchanted Village (1950) A Can of Paint (1944) Defence (1947) The Rulers (1944) Dear Pen Pal (1949) The Sound (1950) The Search (1943)

    The ultimate warriors, they are known for their deadly rages, unbreakable honor, and fierce independence. No man rules the Dorsai, but their mastery of the art of war has made them the most valuable mercenaries in the known universe. Donal Graeme is Dorsai, taller and harder than any ordinary man. But he is different as well, with talents that maze even his fellow Dorsai. And once he ventures out into the stars, the future will never be the same.

    Several printings through 1982. Blish (1921 - 1975) was a prominent SF writer and critic; his "Cities in Flight" and "Seedling Stars" series are classics of modern science fiction.