Mostrando títulos en Viajes en el Tiempo

When Kate Pierce-Keller’s grandmother gives her a strange blue medallion and speaks of time travel, sixteen-year-old Kate assumes the old woman is delusional. But it all becomes horrifyingly real when a murder in the past destroys the foundation of Kate’s present-day life. Suddenly, that medallion is the only thing protecting Kate from blinking out of existence. Kate learns that the 1893 killing is part of something much more sinister, and her genetic ability to time travel makes Kate the only one who can fix the future.

The man they took prisoner was not the Jonathan Tibbs they remembered. He said that time was running out. That the world faced an enemy it could not defeat. He said everything depended on whether or not they could make a leap of faith. Then, he asked them for five nuclear warheads. The Never Army is the final installment in The Chronicles of Jonathan Tibbs - a mind-bending, genre-crossing, multiple award-winning, action-adventure trilogy.

Gwen's life has been a rollercoaster since she discovered she was the Ruby, the final member of the secret time-traveling Circle of Twelve. In between searching through history for the other time-travelers and asking for a bit of their blood (gross!), she's been trying to figure out what all the mysteries and prophecies surrounding the Circle really mean. At least Gwen has plenty of help. Her best friend Lesley follows every lead diligently on the Internet. James the ghost teaches Gwen how to fit in at an eighteenth century party.

Would you sacrifice your future... for an uncertain past? Gabriella and Evangelia Betarrini are just two normal American teenagers. Normal - except for the fact that they time travel to fourteenth-century Italy, where they’ve lived in castles, become swept up in historic battles, and fallen in love with handsome knights willing to do anything to keep them alive.

Jim, a wisecracking, OCD-suffering fighter pilot, is about to propose to his girlfriend when his friend Kurt surprises them by showing up at his house, wounded and covered in blood. This is just the beginning of Jim's woes, because soon after, his life is thrown into a galactic conflict that threatens the very existence of the human race. Can our heroes save humanity from the wrath of a galaxy-conquering alien fleet? The Crimson Deathbringer seamlessly blends breathtaking action sequences with mischievous humor.

David, Xander, and Toria King never know what new adventures - and dangers - await them beyond the mysterious portals hidden on the top floor of their new house. They have battled gladiators and the German army, dodged soldiers on both sides of the Civil War, and barely escaped a fierce attack in their own home.

Casey Donovan has issues: hair, height, and uncontrollable trips to the 19th century! And now this - she's accidentally taken Nate Mackenzie, the cutest boy in the school, back in time. Awkward.

Rigg’s journey comes to an epic and explosive conclusion as everything that has been building up finally comes to pass, and Rigg is forced to put his powers to the test in order to save his world and end the war once and for all.

Despite all of the odds, Joan achieved the impossible. She reset the timeline, saved her family – and destroyed the hero, Nick. But her success has come at a terrible cost. She alone remembers what happened. Now, Aaron, her hard-won friend – and maybe more – is an enemy, trying to kill her. And Nick, the boy she loved, is a stranger who doesn’t even know her name. Only Joan remembers that a greater and more dangerous enemy is still out there. When a deadly attack forces Joan back into the monster world, she finds herself on the run with Nick – as Aaron closes in.

Pretending everything is all right when it’s not is harder than it sounds. The Kings know that even if they told the truth about the bizarre happenings in their new home, no one would believe them. They’re hyper-focused on rescuing their lost family member before anyone finds out what’s going on.

The final stretch of Arlan’s journey is here, but with it, the Demons’ final stand. Arlan has one last obstacle in his way before he can escape from imminent death—a monster-infested mountain range. But just as much as the monsters pose a threat to him, they also pose an opportunity. After all, an enemy is just a Level-up waiting to be claimed. The Demons are intent on not giving Arlan the time to get strong enough to beat them, though.

She's only recently learned that she is the Ruby, the final member of the time-traveling Circle of Twelve, and since then nothing has been going right. She suspects the founder of the Circle, Count Saint-German, is up to something nefarious, but nobody will believe her. And she's just learned that her charming time-traveling partner, Gideon, has probably been using her all along.

For years, SauraCorps has kept its existence confidential while touting themselves as a run-of-the-mill dinosaur museum. For two Utah teens, Kamren and Vivienne, a care-free night to themselves quickly turns into a daunting trek through an exotic, unfamiliar time. Not only do they stumble upon SauraCorps’ nefarious agenda, they also encounter major discrepancies concerning the past that would rewrite history books as we know them.

Kiernan Dunne abandoned his family ties to help Kate fight the Cyrists, and he's never regretted that for one moment. But he doesn't understand why Kate can't remember that night in 1893 Chicago, when she turned back to face the killer chasing them through the smoky corridors of the World's Fair Hotel. Kate placed the CHRONOS key around his neck and made his eight-year-old self promise to wear it always, and that's a promise Kiernan has never broken.

For the first time in her life, Hope Walton has friends...and a (maybe) boyfriend. She's a Viator, a member of a long line of time-traveling ancestors. When the Viators learn of a plan to steal a dangerous device from the inventor Nikola Tesla, only a race into the past can save the natural timeline from utter destruction. Navigating the glitterati of the Gilded Age in 1895 New York City, Hope and her crew will discover that high society can be as deadly as it is beautiful.

When the Kings move from LA to a secluded small town, 15-year-old Xander is beyond disappointed. He and his friends loved to create amateur films, but the tiny town of Pinedale is the last place a movie buff and future filmmaker wants to land. But he, David, and Toria are captivated by the many rooms in the old Victorian fixer-upper they moved into - as well as the heavy woods surrounding the house.

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.

On a rescue mission to save her spurned lover, Sophie is exiled to a terrifying realm. Her ex, her dog, and her soulmate are sent there too. Fortunately, in this parallel universe, Sophie has a superpower. The catch? Her new ability horrifies her ex, endangers her dog, and alienates her soulmate.

Etta Spencer didn't know she was a traveler until the day she emerged both miles and years from her home. Now, robbed of the powerful object that was her only hope of saving her mother, Etta finds herself stranded once more, cut off from Nicholas - the eighteenth century privateer she loves - and her natural time.

Seventeen-year-old Dan Renfrew's life is anything but ordinary. In addition to facing the usual teenage challenges, he has a secret. He's a time jumper, a member of a clandestine group tasked with fixing glitches in history. When rogue jumpers threaten global chaos, Dan and his partner Sam embark on a perilous mission to Mongolia in the year 1179. There they encounter a brave teen fighting to save his kidnapped wife. They soon realize they're in a desperate race against time to save the Mongol Empire—and the future of the entire world.