Science Fiction Time Travel

Where did the tree house come from? Before Jack and Annie can find out, the mysterious tree house whisks them back to the prehistoric past. Now they have to figure out how to get home. Can they do it before dark, or will they become a dinosaur's dinner?

Cosmopolitan Magazine calls Addison's books..."easy, frothy fun!" Addictive from start to finish! The Celestra series has been optioned for film by 20th Century Fox! A halfbreed angel who can read minds, one too many love interests, and an entire faction of angels who are out to kill her—living on Paragon Island can be deadly. From NEW YORK TIMES, USA TODAY, and Wall Street Journal bestselling author, Addison Moore. From the NEW YORK TIMES bestselling author Addison Moore: Seventeen year-old, Skyla Messenger finds herself lying on an altar as a sacrifice to the enemy. Being an angel of ...

You know the future that people in the 1950s imagined we'd have? Well, it happened. In Tom Barren's 2016, humanity thrives in a techno-utopian paradise of flying cars, moving sidewalks, and moon bases, where avocados never go bad and punk rock never existed...because it wasn't necessary. Except Tom just can't seem to find his place in this dazzling, idealistic world, and that's before his life gets turned upside down.

How far would you go to defeat your enemy? What if there were no limits? A planet a couple of hundred light years from Earth is catastrophically attacked. Meanwhile back on Earth, Jack Felder is on a leisurely trip through the Amazon when his brother is taken and he vows to save him at any cost. What starts as a rescue effort slowly morphs into a perilous and thrilling adventure exposing an amazing twist to our galaxy’s past and climaxing in an epic battle with the fate of several worlds in the balance.

Newly Revised and Updated in 2025! Time snakes between alternate universes. Ever watchful, an alien intelligence survives on Mars, waiting to be found by spacefarers from Earth. The alien’s ultimate goal is to send human astronauts back in time, where they will alter the past and thwart the extinction of the dinosaurs. A race of intelligent dinosaurs, resembling the alien’s extinct species, subsequently evolves to rule the world. But a human female astronaut, through a strange twist of fate, survives the change in the space-time continuum. After finding herself in a dinosaurian body, ...

The future of Anyar is being woven with threads spread across the planet. Those myriad threads contribute to a tapestry whose final mosaic remains obscure. An enigmatic alien race scattered five human castaways across the planet Anyar, far enough apart that they should never meet. The planet itself is a mystery. How is it already inhabited by humans when they did not evolve there? Castaway Joseph Colsco, now known as Yozef Kolsco, gradually finds himself at the center of resistance to an empire with ambitions to rule the world by any means necessary: Narthon.

What would you do if you could travel through time? When four unsuspecting teens from the world's top science academy attempt a trip to ancient Egypt, they dive into an adventure beyond their wildest imaginations. Jax and Isaiah expect pyramids and pharaohs, but come face-to-face with some of the deadliest creatures to ever walk the earth. Can JT and Micky get there before it's too late? And what will happen when they are confronted with the true history of the world? "Rather than compromising biblical history, this story confirms the facts recorded in the Bible and helps the reader ...

“There is only one plot—things are not what they seem.” ― Jim Thompson (novelist & screenwriter) *** Preventing murders is a complicated business—even when you're actually able to get glimpses of the future. *** From the paperback edition: A word to my fellow Sherlock Holmes aficionados: In many ways, The Other Sherlock Holmes is a very typical Holmesian mystery; there is a murder to solve and a dangerous conspiracy to expose and neutralize. Also, it will be the ‘real’ Holmes who will save the day—and the other Sherlock’s life as well in the process. (...) However, this ...

Chase curled into a ball as the dinosaur exploded from the muck in a shower of gooey slime. A heavy foot slammed into the ground beside him, so close the impact bounced him into the air. His spine struck the point of a rock when he came back down, shooting streaks of pain through him like waves of rusty nails. He cried out— “Aaaaahhh!” Trapped 140 million years in the past and desperately in need of water, fourteen-year-old Chase sets out to shadow a thirty-foot baryonyx. He knows that Baryonyx is a fish-eating dinosaur, and he’s certain the ferocious predator will lead him to a ...

Joseph Colsco has survived what many would not have - cast naked on an alien planet amidst humans speaking an unknown language and with a different culture and history. Now, known to the people of Caedellium as Yozef Kolsko, he has risen out of despair to prominence and finds himself a central figure in the culmination of a struggle against an imperialist power bent on subjugation. The clans of the Island of Caedellium must gird themselves for what is to come.

The Sky Door… A test flight. A mysterious rift. A journey across time that will change two lives forever. When Lieutenant Jessica Monroe breaks the sound barrier in the Navy's experimental X-99 fighter jet, she expects to return to base with performance data—not crash-land in 1875 Montana. Stranded in a world of horse-drawn carriages and frontier justice, this elite pilot must adapt her 21st-century skills to a harsh landscape where her technology is useless and her very presence is suspicious. Ethan Blackwood, a former sheriff haunted by tragedy, discovers the strange woman in uniform ...

Equipped with the entirety of human knowledge, a sentient ship is launched on a last-ditch journey to find a new home for civilization. Trillions of miles. Tens of thousands of years. In the space between, the AI has plenty of time to think about life, the vastness of the universe, everything it was meant to do, and—with a perspective created but not limited by humans—what it should do.

When Rigg and his friends crossed the Wall between the only world they knew and a world they could not imagine, he hoped he was leading them to safety. But the dangers in this new wallfold are more difficult to see. Rigg, Umbo, and Param know that they cannot trust the expendable, Vadesh - a machine shaped like a human, created to deceive - but they are no longer certain that they can even trust one another. But they will have little choice.

Brian Partridge leapt at the chance to buy the personal property of his favorite historical author following his death, although what he received was far more than he bargained for. It didn’t take him long to discover just how the author was able to write scenes from the past with such accuracy. Of course, Brian was familiar with time machines in movies, but that was fictional—not real—and yet, before him stood one of his very own. He knew he shouldn’t step inside and turn it on, but the temptation was more than he could bear.

Prepare for a Mind-Blowing Journey into the Future of Finance! In XRP 2034: Future Proves Past, the most thrilling financial reset in world history is just beginning, and now you can experience it through this gripping audiobook! With the collapse of traditional banking and fiat currencies, XRP rises from the ashes, becoming the gold-backed foundation for a new global economy. This isn’t just a tale of economics—it’s a high-stakes adventure filled with groundbreaking insights into blockchain, military tribunals, and the radical implementation of Nesara-Gesara reforms.

The world she knew is gone. The climate crisis that doomed her future hasn't begun yet, but neither has the fight to stop it. Stranded decades before disaster, Sara must convince a skeptical world to change course before it’s too late.

Ryan Hero is a typical teenager who has fallen in with the "wrong crowd." After a particularly bad day at school, Ryan’s world gets turned upside down! When Ryan stumbles upon Time Travel, he finds a way to right the wrongs. Finding a new friend in Tim (who he used to bully), the pair dream their way to the past, creating an everlasting partnership. Follow these Time Travelling Heroes on an incredible adventure through dreams in a race against time, fighting to put their worlds right before it’s too late….

A body is no match for an idea.Esteemed NYC anchorwoman, Margi Hall, spends her days reporting on the lives – and lies – of others. When the studio cameras show her imperfections, she seeks out a scientist who extolls his secret technology using nanobot implants. Instead of capturing her youth, she finds herself in another woman’s body on another planet. And no one must know.Margi begins her new life embodied as wife to the young CEO of a biotech empire whose greatest achievement is Space Tourism and clones for the elite. While she plots revenge upon the scientist who enslaved her, ...

Captain Blite knows that someone, or something, is trying to kill him. But a device he possesses, known only as the dark diamond, won't let that happen. After surviving a series of accidents and assassination attempts, Blite comes to realize that whenever he dies the dark diamond reverses time to a moment before his death. He must then go through the traumatic experience again and again until he escapes.

A school shooting in 2016 leaves Daniel Girch in a coma. As he’s hovering between life and death, he inexplicably wakes up in his own bedroom...but instead of an iPhone plugged in next to his bed, there’s a radio. On the dresser is a stack of cassette tapes. On the wall is a poster of a young Christie Brinkley. And in the closet are parachute pants and polo shirts. Downstairs, Daniel’s dead grandmother is making pancakes, and his mom is suddenly an annoying eleven-year-old who plays with Barbies. It’s 1986. With the help of his new best friend, Daniel assimilates to life as a ...