Science Fiction Time Travel

In Night of the Ninjas, Jack and Annie meet a real live ninja when the Magic Tree House whisks them back to ancient Japan in search of enchantress Morgan le Fay, who holds the answer to the origins of the Tree House. When they arrive, they find themselves in the cave of a ninja master. Will they learn the secrets of the ninja? Or will the evil samurai warriors get them first?

Christophe Jones never asked to be a pirate. Pressed into a crew, he moved up in rank to make his eventual escape. When he finally has a chance to cut ties and return to his former life, he takes it...or tries to. A whirling maelstrom sucks him beneath the waves. Only, he doesn't drown. Instead, Christophe finds himself 300 years in the future, captivated by a beautiful woman. Serena's 28th birthday cruise isn't going as planned. The only one of her friends who didn't cancel gets sick on the voyage, forcing Serena to spend her birthday alone.

Henry, Frances, and Lukas are neighbors, and they used to be best friends. But in middle school Frances got emo, Lukas went to private school, and Henry just felt left behind. When they come together again for the funeral of a pet gerbil, the three ex-friends make a mind-blowing discovery: a radio, buried in Henry’s backyard, that allows them to talk to another group of kids in the same town...in the same backyard...eighty years in the past.

Anna has made a place for herself in 13th century Wales as a wife, mother, and healer. David has taken more of the kingdom's rule on his shoulders, even as his relationship with Lili has caused friction with his father, King Llywelyn. The King wants his son to seek a political marriage that will benefit his country - and possibly place the crown of England on David's head.

Loïc regarde autour de lui. Ce qu’il découvre alors lui coupe littéralement le souffle: le Westfalia a disparu. Pire encore, sa maison n’est plus là. À sa mort, Papi Georges lègue aux membres de sa famille bien peu de choses: une boîte de photos, une vieille carte géographique, un pendentif, une boîte de cossins et… son vieux Westfalia 1975. Mais lorsque Loïc, 14 ans, découvre que dans le vieux West se cache un portail temporel, les vacances qui s’annonçaient ennuyantes prennent une tournure pour le moins inattendue.

The team of heroes extracted from their timelines to stop the impending apocalypse didn't think they needed a leader. But they've got one anyway. With their mission in tatters, Miri has been called in to steady the ship. And to focus them on their assignment: preventing the end of the world. The problem is, the world doesn't know it's in danger. With governments pursuing them relentlessly, attempting to steal the time-travel device to use for their own ends, the heroes are on the run.

Dawson Huxham blames himself for his sister’s death, until he briefly crosses time and discovers she’s alive in the Middle Ages. Hoping to reconnect with her, he searches for the holy water that will help him visit the past for a longer duration. But he realizes he’s not the only one looking for the miraculous water. Terrorists are threatening him, watching his every move.

After becoming trapped in present-day Bath due to a mishap with her time-traveling charm, Jane Austen is safe and sound back in the 1800s thanks to Rose Wallace’s help. Now, Rose is ready to focus on her fledgling romance with dreamy Dr. Aiden Trevellyan. But when Jane reappears in the present, it looks like Rose and Aiden have no choice but to follow her back to 1813....

Rebecca Wright has reclaimed her life, finding her way out of her grief and depression following a personal tragedy years ago. She spends her days working in customer support for the Internet dating site where she first met her husband. But she has a strange, persistent sense that everything around her is somewhat off-kilter: She constantly feels as if she has walked into a room and forgotten what she intended to do there; on TV, the president seems to be the wrong person in the wrong place; her dreams are full of disquiet.

Kenna McMillan would do anything for her grandchildren. She would even accompany one of them hundreds of years into the future for a week of Christmas celebrations with the old witch Morna, just to make him smile. But unexpected guests at the inn upend all of their holiday plans. As she learns more about her new acquaintance, she starts to wonder if her week away might take a romantic turn....

Bill McKay, a time traveler from our modern world, travels through time to land in a beautiful world with a pleasant climate and abundant food, where exotic people and dinosaurs cohabitate. A paradise. Has he traveled to another planet? Despite the idyllic conditions, Bill witnesses the violence and corruption of the people firsthand, reminding him of his world with its constant war, death, and destruction. A charismatic man claims to have received a word from God that a Great Flood will destroy the planet. Is he actually on the earth before the Flood? Is this Noah?

Ann Decker fixes computers for a living, and in the evenings she passes the time sharpening her hacking skills. It's not a very interesting life, but she gets by - until one day she's contacted with a job offer for a company called Transformations Incorporated. None of her coworkers has ever heard of it before, and when Ann is finally told what the company does, she can hardly believe it: TI has invented technology to travel in time.

Nothing exciting ever happens on twelve-year-old Danny’s estate...that is until he falls through a locker in his grandad’s workshop and finds himself in an Interdimensional Lost Property Office! Join Danny, Modge and Inaaya in more rocket-fuelled rampages across the universe and space shenanigans as they race to save the universe from the evil Flurm Worm.

After traveling through history multiple times and finding out his original identity, Jonah thought he'd fixed everything. But some of his actions left unexpected consequences. His parents - and many other adults - are still stuck as teenagers. And now Jonah has a new sibling, an identical twin brother named Jordan. As odd as all this is for Jonah, it's beyond confusing for Jordan. How does everyone in his family have memories of Jonah when he doesn't?

In a race against the clock, I not only have to figure out his identity, but I'll have to outwit a voice from the future telling me to kill him. Because I'm starting to realize no one is telling the truth. But how can I play chess with someone who already knows the outcome of my every move? Someone so filled with malice they've lost all hope in humanity? Well, I'll just have to find a way - because now they've drawn a target on the only boy I've ever loved....

In a wild time-travel novel, Mark McKenna and the crew of Time Portal Alpha board a vehicle which had only simulated journeys back in time. The maniacal Dr. Nieeko Mauro, a man both genius and evil, has broken the time barrier to radically alter the current timeline. Nieeko wishes to diminish the United States of America into a minor world power, seething in poverty and unable to economically take care of its own people. A point in time exists in the 20th century where Nieeko altered the timeline and prevents a project that brought economic growth to America in the 20th century.

After the explosion, Will didn't expect to wake up again, especially in the past. Alive is good. Except he finds himself at the Alamo in 1836 in the body of another man doomed to die. If history repeats itself, Santa Anna is coming soon, and the Alamo will fall, along with himself and 189 others. In a race against time itself, Will uses his knowledge of the future to change the past. He will use every means necessary, even if it means abandoning the fort. He is determined to forget the Alamo!

In this riveting suspense thriller, two children race the clock to stop a futuristic murderer and his plan to enslave the world. In 30 days, a coldhearted corporate tycoon will unleash a deadly biological computer virus on the entire world. As the public eagerly awaits his invention that promises ultimate relaxation, harmony, and community, the evil big-business sorcerer plans to put an end to freedom. Can he be stopped?

It's Christmas at St Mary's and time for the traditional illicit jump. Except this one is perfectly legal. It's Major Guthrie's last jump. To the Battle of Bannockburn, no less. An important moment in history for two nations - one that warrants everyone's full attention. But Max soon finds herself grappling with a near-lethal game of pooh sticks, another avian incursion and two turbulent teenagers intent on piloting their own illegal jump. And that's all before they even get near 14th-century Scotland. For this is St Mary's, and nothing is ever simple.

In Captain Coder: Time Loop Debugger, Cornelius–better known as Captain Coder–with his trusted team, invents a groundbreaking time-travel algorithm that allows him to alter events in the past. Using his unique programming-based powers, he must navigate the ethical and practical challenges of rewriting time to prevent catastrophic events while avoiding dangerous paradoxes.