Robert A. Heinlein wrote The Number of the Beast, which was published in 1980. In the book Zeb, Deety, Hilda, and Jake are ambushed by the alien "Black Hats" and barely escape with their lives on a specially configured vehicle (the Gay Deceiver) which can travel along various planes of existence, allowing them to visit parallel universes. However, unknown to most fans, Heinlein had already written a "parallel" novel about the four characters and parallel universes in 1977.

Mike and Annie, refugees from the world outside, find a home underground, behind the scenes of Dreamworld, a theme park where hope exists as it does nowhere else. But Dreamworld is threatened by a jealous competitor who kills what he can’t have. As if this were not trouble enough, the two discover that each day there are more of the “trolls” who maintain Dreamworld than there were the day before. As the trolls continue to multiply, they must discover why, or it could mean the end of Dreamworld - and the real world.

At his death in 1988, Robert A. Heinlein left a legacy that almost single-handedly defined modern science fiction. But one of Heinlein's masterpieces was never finished. In 1955, he began work on Variable Star, a powerful and passionate tale of two young lovers driven apart by pride, power, and the vastness of interstellar time and space. Now, the Heinlein estate has authorized award-winning author Spider Robinson to expand his outline into a full-length novel. And the result is vintage Heinlein.

One of Heinlein's best-loved works, The Rolling Stones follows the rollicking adventures of the Stone family as they tour the solar system. It doesn't seem likely for twins to have the same middle name. Even so, it's clear that Castor and Pollux Stone both have "Trouble" written in that spot on their birth certificates. Of course, anyone who's met their grandmother Hazel would know they came by it honestly.

The wickedest, most wonderful science fiction story ever created in our - or any - time. Anything can begin at a party in California - and everything does in this bold masterwork by a grand master of science fiction. When four supremely sensual and unspeakably cerebral humans - two male, two female - find themselves under attack from aliens who want their awesome quantum breakthrough, they take to the skies - and zoom into the cosmos on a rocket roller-coaster ride of adventure, danger, ecstasy, and peril.

In what is considered one of Heinlein's most hair-raising, thought-provoking, and outrageous adventures, the master of modern science fiction tells the strange story of an even stranger world. It is 21st-century Luna, a harsh penal colony where a revolt is plotted between a bashful computer and a ragtag collection of maverick humans, a revolt that goes beautifully until the inevitable happens. But that's the problem with the inevitable: it always happens.

Meet Roger. Skilled with words, languages come easily to him. He instinctively understands how the world works through the power of story. Meet Dodger, his twin. Numbers are her world, her obsession, her everything. All she understands, she does so through the power of math. Roger and Dodger aren’t exactly human, though they don’t realize it. They aren’t exactly gods, either. Not entirely. Not yet. Meet Reed, skilled in the alchemical arts like his progenitor before him. Reed created Dodger and her brother. He’s not their father. Not quite. But he has a plan.

After the fall of the American Ayatollahs as foretold in Stranger in a Strange Land and chronicled in Revolt in 2100, the United States of America at last fulfills the promise inherent in its first Revolution: for the first time in human history there is a nation with Liberty and Justice for All. No one may seize or harm the person or property of another, or invade his privacy, or force him to do his bidding. Americans are fiercely proud of their re-won liberties and the blood it cost them; nothing could make them forswear those truths they hold self-evident. Nothing except the promise of immortality…

This collection from grand master Robert A. Heinlein includes five short stories sure to please science fiction fans everywhere. The title story tells the tale of a young man who meets a time-traveling bartender whose origins - and relation to the young man - are more complex and stranger than the Ouroboros ring on the barkeep's finger.

He's a self-described beach bum who won his houseboat in a card game. He's also a knight errant who's wary of credit cards, retirement benefits, political parties, mortgages, and television. He only works when his cash runs out, and his rule is simple: he'll help you find whatever was taken from you, as long as he can keep half.

It's 1974, and Jerry Stieglitz is a grad student in marine biology at UCLA with a side gig selling short stories to science fiction magazines, just weeks away from marrying his longtime fiancée. Then his life is upended by grim-faced men from three-letter agencies who want him to join a top-secret "Project Azorian" in the middle of the north Pacific Ocean—and they really don't take "no" for an answer. Further, they're offering enough money to solve all of his immediate problems.

In the post-Break world of superpowers, necromancy is the one gift nobody wants. But an invitation to the Free States' Academy of Superheroes means that same gift might be Damian Banach's ticket to a brighter future... if only he can avoid the madness ingrained in his powers. There has never been a Crow Cape, but Damian isn't the sort to give up. He'll take control of his destiny or die trying... and he just might bring the post-Break world to its knees along the way.

This is the way the world ends: with a nanosecond of computer error in a Defense Department laboratory and a million casual contacts that form the links in a chain letter of death. And here is the bleak new world of the day after: a world stripped of its institutions and emptied of 99 percent of its people. A world in which a handful of panicky survivors choose sides - or are chosen.

On November 22, 1963, three shots rang out in Dallas, President Kennedy died, and the world changed. What if you could change it back? In this brilliantly conceived tour de force, Stephen King - who has absorbed the social, political, and popular culture of his generation more imaginatively and thoroughly than any other writer - takes listeners on an incredible journey into the past and the possibility of altering it.

A milestone of storytelling set in the world of The Sword of Truth, Debt of Bones is the story of young Abby's struggle to win the aid of the wizard Zedd Zorander, the most important man alive. Abby is trapped, not only between both sides of the war, but in a mortal conflict between two powerful men. For Zedd, who commands power most men can only imagine, granting Abby's request would mean forsaking his sacred duty. With the storm of the final battle about to save the life of a child....