The young man in question, Ross Murdock, is about to embark upon the adventure of his life. In order to avoid prosecution, he reluctantly joins Operation Retrograde, whose members are exploring various time periods. Their goal? To find out where – and when – the ‘Reds’ are obtaining certain scientific breakthroughs, in order to maintain the balance of global power. An outsider in his own time, Ross becomes an outsider in other times as well, and faces one challenge after another.

An orphan, Blake Walker has never really known who he was, and his strange flashes of intuition have always set him apart from those who raised him and everyone else he has known. Acting on one of those flashes, he prevented a murder. But neither the assailant nor his intended victim were from the world Walker had always known - he had stumbled onto the greatest secret of the ages. Our Earth is only one of an infinite number of Earths, each with a slightly different history from the others, each separated from the others in a crosstime dimension.

Was Andas an android - or the rightful emperor, held prisoner on a distant planet while an android impersonated him on the empire's throne world? Was Tallhassee Mitford a modern archaeologist suffering from strange delusions, or has an ancient Egyptian ankh somehow hurled her personality far back in the mists of time to a Nubian kingdom where she is now a warrior princess named Ashake, caught up in a struggle between the gods of Egypt? Two very different heroes in the grip of forces beyond control, beyond comprehension, both destined to be the only hope of doomed civilizations.

In this story, an alien race known as the "Throgs" attacks a Terran survey camp without warning. "Eye-searing lances of energy lashed back and forth across the base with methodical accuracy, and a single cowering witness, flattened on a ledge in the heights above, knew that when the last of those yellow-red bolts fell, nothing human would be left alive down there."

This volume contains two novels. Perilous Dreams: Tamisen the Dreamer is trained to walk through her dreams to other places, other worlds. But when she is asked by the crippled star traveler Lord Starrex to take him into a dream world where he can regain his legs and his life, something goes terribly wrong. Knave of Dreams: For Ramsay Kimble, sleep means nightmares, and he avoids it whenever possible. But now a car accident has catapulted him into the very world he most dreads: the horror world of his own dreams.

Set on a planet in a parallel universe where magic is a reality, these three high fantasy novels from the Witch World series transport you to the eastern continent of Estcarp, illustrating why prolific author Andre Norton was named a Grand Master by the Science Fiction and Fantasy Writers of America. Contains Trey of Swords, Ware Hawk, and The Gate of the Cat.

It was the time of the Moon of the Three Rings when the Free Trader ship Lydis landed on the planet Yiktor and junior crew member Krip Vorlund visited a beast show. He was strangely attracted to the owner of the show animals, a delicate and mysterious woman named Maelen. Soon Krip was caught in a vicious struggle by powerful opponents over the fate of Yiktor - and he learned the nature of Maelen's sorcery when he found his mind trapped in the body of a wolf-like creature.

The Stars Are Ours: Dard Nordis is a hunted man. His brother was murdered for covert activities as a scientist in a world in which scientists and engineers are blamed for the global war that smashed civilization. Star Born: Centuries after the desperate flight from Earth, Pax has been overthrown and humanity again reaches for the stars. Rof Kurbi's spaceship reaches the planet Astra, but he and the crew do not know that the planet already has a colony established centuries ago.

Only as interstellar mercenaries can humans go to the stars; the aliens who already dominate the galaxy allow no other recourse. But when Swordsman Third Class Kana Karr and his comrades-in-arms are betrayed and abandoned on a hostile world by their alien masters, the warriors from Earth begin a desperate but glorious march across a planet whose every sword is against them. Their actions may doom humanity's future...or lead the way to an empire of their own!

Set on a planet in a parallel universe where magic is a reality, these high fantasy novels from the Witch World series transport you to the western continent of High Hallack, illustrating why prolific author Andre Norton was named a Grand Master by the Science Fiction and Fantasy Writers of America.

The birth of a hero is never easy. Clumsy as an elephant in high heels, he is nothing like his legendary scout father. But inside that bull-moose-of-a-body lies the heart of a hero whose moment has arrived! Next, a boy survives alien invasion - but must learn to think and act like his reptilian enemy to exact retribution for slaughter. These and two other tales of coming-of-age-through-peril from the writer who invented the genre, Andre Norton.

Left homeless by the war that reduced Terra to a radioactive cinder, Hosteen Storm - Navaho commando and master of beasts - is drawn to the planet Arzor, to kill a man he has never met. On that dangerous frontier world, aliens and human colonists share the land in an uneasy truce. But something is upsetting the balance, and Storm is caught in the middle. He had thought the war was over - but was it?

The planet Korwar was a glittering jewel of a world, inhabited by the galaxy's wealthiest, visited by the upper classes of other worlds in search of diversion. The jewel had a flaw: the Dipple, its name coming from a contraction of "displaced person", where the misfits, the hopeless, the penniless eke out a wretched existence on the dole. Two young men hoped to escape from the Dipple.

Impoverished and without hope, Naill Renfro sells himself into indentured servitude and is transported across the galaxy to the far-off jungle world of Janus. Naill hopes to work off his debt and begin his life again. But the harsh masters of Janus are destroying the priceless treasures of the planet's ancient culture - and when Naill, entranced by the beauty of an alien artifact, is caught trying to hide it, he is exiled and left to die in the jungle. But Naill inexplicably begins to remember another life, in another time - a time when he was not human, but something else

Murdoc Jern's father, an interstellar gem trader, was murdered by outlaw competitors and left behind an odd ring, large enough to fit over the finger of a space suit. With his companion Eet, a strange feline mutant with phenomenal mental powers, he soon discovered that the stone in the ring was actually a Zero Stone - an alien device left behind by an ancient vanished race - and it was the key to powers beyond human imagination. Murdoc and Eet had to solve the secret of the Zero Stone, and very quickly, because very greedy and dangerous people wanted that ring.

John O'Ryan is not a god...not exactly. He is an eternal warrior destined to combat the Dark Lord through all time for dominion of the Earth. Follow him, servant of a great race, as he battles his enemy down the halls of time, from the caves of our ancestors to the final confrontation under the hammer of nuclear annihilation.

Two hundred years after the Forbidding was broken, Santhenar is locked in war with the lyrinx - intelligent, winged predators who will do anything to gain their own world. Despite the development of battle clankers and mastery of the crystals that power them, humanity is losing. Tiaan, a lonely crystal worker in a clanker manufactory, is experimenting with an entirely new kind of crystal when she begins to have extraordinary visions.

In this story, an alien race known as the "Throgs" attacks a Terran survey camp without warning. "Eye-searing lances of energy lashed back and forth across the base with methodical accuracy, and a single cowering witness, flattened on a ledge in the heights above, knew that when the last of those yellow-red bolts fell, nothing human would be left alive down there."

Once there were three worlds, each with their own human species. Then, fleeing out of the void came a fourth species, the Charon. Desperate, on the edge of extinction, they changed the balance between the worlds forever. Karan, a sensitive with a troubled heritage, is forced to steal an ancient relic in repayment of a debt. It turns out to be the Mirror of Aachan, a twisted, deceitful thing that remembers everything it has ever seen.

The wall just didn’t look right. Alex has been trying to cope. Life after his deployment had been rough. His ex-wife thought he needed to stop disappointing their daughter. She was right. He would try harder. With six hours before his little girl’s fourth birthday party, he saw the anomaly. One wall was too short. Plenty of time to tear out a panel and look behind it. He found a brick wall. His house wasn’t made of brick. Behind that was another just like the first. He still had time. When the second wall came down, Alex stood and stared at the shining doorway.

Marcus Flavius Aquila, a young centurion in Roman Britain, is forced into retirement after receiving a wound in his first major engagement against a rebel British tribe. It allows him the freedom to embark upon a dangerous mission to find out what happened to the Ninth Legion, which, years before, disappeared in the savage lands of the Picts. Will he find out what happened to the men, led by his father, who never returned? And will he recover the Eagle, the symbol of Roman dominance and power?

Change or die: the only options available on the Durallium Company-owned planet GP. The planet's deadly virus had killed most of the original colonists - and changed the rest irrevocably. Centuries after the colony had lost touch with the rest of humanity, the Company returned to exploit GP, and its forces found themselves fighting for their lives. Afraid of spreading the virus, the Company had left its remaining employees in place, afraid and isolated from the natives.

Sixty-five million years ago, a disastrous cataclysm eliminated three quarters of all life on Earth. Overnight, the age of dinosaurs ended. The age of mammals had begun. But what if history had happened differently? What if the reptiles had survived to evolve into intelligent life? In West of Eden, best-selling author Harry Harrison has created a rich, dramatic saga of a world where the descendants of the dinosaurs struggled with a clan of humans in a battle for survival.

Shardik is a fantasy of tragic character, centered on the long-awaited reincarnation of the gigantic bear Shardik and his appearance among the half-barbaric Ortelgan people. Mighty, ferocious, and unpredictable, Shardik changes the life of every person in the story. His advent commences a momentous chain of events.

Four hundred years in the future the Earth has turned primitive, following a nuclear fire that laid waste to civilization and nature. Though the radiation fallout has ended, for some unknowable reason every person is born with a twin. Of each pair one is an Alpha - physically perfect in every way - and the other an Omega burdened with deformity, small or large.

For a game, the gods have given the world 12 Swords of Power so that they might be amused as the nations battle for their possession. But Vulcan the Smith has had his own little joke: the Swords can kill the gods themselves. What started out as Divine Jest has become all too serious as the gods fight to recover the Swords, and mortals discover that the mantle of power is more delicious and more terrible than anything they could have imagined.

Kagur is a warrior of the Blacklions, fierce and fearless hunters in the savage Realm of the Mammoth Lords. When her clan is slaughtered by a frost giant she considered her adopted brother, honor demands that she, the last surviving Blacklion, track down her old ally and take the tribe's revenge. Yet this is no normal betrayal, for the murderous giant has followed the whispers of a dark god down into the depths of the earth, into a primeval cavern forgotten by time....

"To Build a Fire," the best-known of Jack London's many short stories, tells the tale of a solitary traveler on the Yukon Trail accompanied only by his dog as they endure the extreme cold. A classic narrative of a battle for survival against the forces of nature, "To Build a Fire" is London at his best. Also included here are "The Red One," "All Gold Canyon," "A Piece of Steak," "The Love of Life," "Flush of Gold," "The Story of Keesh," and "The Wisdom of the Trail."

Kyra is the youngest Markswoman in the Order of Kali, a highly trained sisterhood of elite warriors armed with telepathic blades. Guided by a strict code of conduct, Kyra and the other Orders are sworn to protect the people of Asiana. But to be a Markswoman, an acolyte must repudiate her former life completely. Kyra has pledged to do so, yet she secretly harbors a fierce desire to avenge her dead family. When Kyra's beloved mentor dies in mysterious circumstances, and Tamsyn, the dangerous Mistress of Mental Arts, assumes control, Kyra is forced on the run.

Best-selling science fiction superstars Larry Niven and Jerry Pournelle combine their talents with those of Steven Barnes in an extraordinary adventure of humankind’s first outpost in the farthest reaches of space. Light years from Earth, colonists land on a planet they name Avalon. It seems like a paradise—until native creatures savagely attack. It will take every bit of intelligence, courage, and military-style discipline to survive.