Science Fiction Time Travel

Convicted criminal James Griffin-Mars is no one's hero. In his time, Earth is a toxic, abandoned world, and humans have fled into the outer solar system to survive, eking out a fragile, doomed existence among the other planets and their moons. Those responsible for delaying humanity's demise believe time travel holds the key, and they have identified James, troubled though he is, as one of a select and expendable few ideally suited for the most dangerous job in history.

Henry Long doesn't have a heart. Since the Tragedies, he doesn't have much: just an annoying low-watt buzz from his makeshift transplant, skinny arms, and a dusty library attic from which he charts the slow progress of reconstruction in the Green Zone, the last habitable neighborhood of his troubled coastal city. While his parents work on making the Green Zone independent from a federal government that appears to have abandoned them, Henry himself feels increasingly left on his own.

Created as an experiment by the time-traveling goddess Pallas Athene, the Just City is a planned community populated by over 10,000 children and a few hundred adult teachers from all eras of history, along with some handy robots from the far human future - all set down together on a Mediterranean island in the distant past.

Private detective Greyson Travers doesn’t talk about his past, but when a specter from his youth is released from prison, he’s forced to unlock buried memories. His old nemesis is stirring tension in the criminal underworld, and it’s not long before the trouble boils over into Greyson’s private life.

One day, six towers appear on Earth. Each one stands hundreds of stories tall, and are invulnerable to all attacks. At the base of each tower is a portal, welcoming in all who dare enter it. All sorts of magical monsters can be found inside the towers. Even treasure, magic, and superhuman strength can be acquired. The problem is that the towers aren't a friendly place. Even worse, the towers sometimes release waves of monsters to attack Earth. In the year 2083, there are only a hundred survivors. In one last attempt, they challenge the final floor without regard for their lives.

Hard-nosed former FBI analyst and current Private Investigator Helen Washington goes from plunging into a river while attempting a citizen’s arrest to waking up with pneumonia in 16th-century Scotland, with a very handsome Niall caring for her. After shaking her initial disbelief at the situation and meeting the other clan women who have come back in time, Helen begins to wander the keep grounds and explore Loch Ness.

Humanity might have died out once, but Isaac got a second chance at life, returning to the time when the [System] initialized. Grasping this chance with both hands, he worked tirelessly to bring his future knowledge to the masses, but even so, some disasters are inevitable.

The newly formed United States of Europe, created by an alliance between the time-displaced Americans from the town of Grantville and the Swedish king Gustavus Adolphus, decides to send an embassy to the Chinese empire. One of the main purposes of the embassy is to establish trade in order to gain access to critical resources. The mission is a gamble - some might say, a long shot. The Ming dynasty is on the verge of collapse and China’s rulers are suspicious of foreigners.

September 10, 2001. Special Forces Major Kyle Mason is honeymooning at New York’s SoHo Grand Hotel with his bride, Padma Mahajan. The couple’s hotel is only a few hundred yards away from Padma’s place of work on the 105th floor of the World Trade Center’s North Tower. When Padma steps out for coffee and a cigarette, a mysterious visitor enters the honeymoon suite, warning Kyle of an incomprehensible catastrophe that will result in the total destruction of the World Trade Center towers, killing his wife.

Dianna’s in over her head. The Queen is her ship now. Hers to sail, and a crew to keep safe as they voyage across the Atlantic to stop Maria’s evil plan of killing her mother. The stress of responsibility, her pregnancy, and helping Henry deal with his PTSD has become a nightmare from which she has nowhere to run. Henry is suffering, refusing to let her in, and Dianna is worried that their love won’t survive the tumultuous journey ahead.

Peter, Mary, and Hank journey to the pyramid-studded desert of ancient Egypt. When the trio become friends with Pharaoh's daughter, they witness first-hand as Moses petitions Pharaoh for the Israelites' freedom. Plagues wreak havoc as the group races to decode the scroll, gets chased by a panther, and battles Pharaoh's cunning advisor, the Great Magician.

The third novel in the international bestselling Before the Coffee Gets Cold series, following four new customers in a cafe where customers can travel back in time. On the hillside of Mount Hakodate in northern Japan, Cafe Donna Donna is fabled for its dazzling views of Hakodate port. But...

The Oblivion Order is falling apart, and the time line is beginning to unravel. Dalton's obsession with the Djinn threatens to bring down the continuum and the only way to stop him is to resolve the riddles of the Eschaton Cascade and find Josh's father. Follow Caitlin and Josh as they discover the origins of the Order and the future that the founder was aiming to avoid.

Catherine Howard stumbles upon the tomb of her granddaughter, Anne Howard Brandon, who'd been swept back through time. Horrorstruck, she discovers Anne was murdered in the year 1562. She calls upon a time-traveling priest, Father Daniel, to rescue her precious granddaughter. But journeying back to the 16th century is a dangerous undertaking; the life and death risks sobering and real. Daniel calls upon the forces of heaven and earth - including a secret Vatican society of time travelers - to aid in this quest.

Arabella Twigg is a very ordinary girl–the sort of girl no-one really notices. She lives with her peculiar family and her horrid brother, Tom. Strange things happen to her when Mrs.Osborne, her teacher, gives her homework. She has to find out all she can about the Aztecs.

Jason had it all, and yet he still couldn't prevent his father's death. He didn't even have time to grieve as his mission took precedence over all else. Pressing onward was the only path. But did he possess enough strength to clear the tower, even with Roy and Olivia at his back? The answer was obvious: Only with humanity's best could he stand a fighting chance. Yet as his actions influenced the world, the more things changed. Worse, his secret identity, Index, was in the spotlight for releasing knowledge that couldn't possibly be known.

From the author of the international bestseller Before the Coffee Gets Cold, this book follows four new customers who hope to travel back in time in a little Japanese café. In a back alley in Tokyo, there is a café that has been serving carefully brewed coffee for more than one hundred years...

In a remote colony on Mars, physicists have used a particle accelerator to artificially create miniature black holes. By accident, two black holes orbiting each other with relativistic spins have opened up a portal to another universe. Engineers Masamune Hughes and Tom Hildebrandt build bigger and better machines to enable them to peek inside, and even cross the threshold themselves. What they find defies all description.

A mysterious cosmic force the Ring of Fire has hurled the town of Grantville from 20th century West Virginia back to 17th century Europe, and into the heart of the Thirty Years War. With their seemingly magical technology, and their radical ideas of freedom and justice, the time-lost West Virginians have allied with Gustavus Adolphus, King of Sweden, to form the Confederated Principalities of Europe, changing the course of history in ways both small and large.

Then: First Lieutenant Sean Elliott and nine other mixed-service US soldiers on a convoy in Afghanistan suddenly found themselves and their MRAP vehicle thrown back to Earth’s Paleolithic Age. And they were not alone. Displaced Romans, Neolithic Europeans, and more showed up as well. Some would be allies. Some became deadly foes. Now: Scientists from an almost unimaginably far future need the survivors’ advice and support to reconnoiter and ultimately recover other groups displaced in time.